WX50 Trimmer Petrol

WX21L/WX21/WX24:; WX30/WX42/WX50

ENGLISH

FOREWORD
This Owner’s/ Operator’s Manual is designed to familiarize the operator with the various features and component parts of the equipment and to assist you with the assembly, operation and maintenance of your new Brushcutter/Grass Trimmer. It is essential that any operator of this Brushcutter/Grass Trimmer reads and understands the contents this manual before using the Brushcutter/Grass Trimmer. For additional assistance, contact any local authorized Unisaw dealer.

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BRUSHCUTTER/ GRASS TRIMMER SAFETY

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BRUSHCUTTER/ GRASS TRIMMER OPERATING SAFETY

352’8&7′(6&5,37,21

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ASSMBLING ENGINE AND DRIVE SHAFT ASSEMBLY

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CONNECTING THROTTLE CABLE AND STOP SWITCH WIRES

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ATTACHING SHOULDER STRAP/ HARNESS

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INSTRUCTION OF THE THROTTLE TRIGGER/

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BRUSHCUTTER/ GRASS TRIMMER OPERATING POSITION

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CUTTING DIRECTION OF BRUSHCUTTER BLADE
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[All models] >@ >%FL@ (P/N 238693) [WX30] (P/N 231264) [WX21L, WX21, WX24, WX27] (P/N 228043) [WX42] (P/N 228207) [WX50] (P/N 225379)

6$)(7<‘(&$/621(1*,1(

[WX21L, WX21, WX24, WX27] (P/N 284587) [WX30, WX42, WX50] (P/N 265694)

Safety Decals are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost.

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6<0%2/(;3/$1$7,21
Indicates Danger, Warning and Caution.

Read and understand this Owner’s/Operator’s Manual.

Wear head protection, where there is a risk of falling objects. Wear eye protection, while operating the Brushcutter/Trimmer. Wear ear protection, while operating the Trimmer/Brushcutter.
Wear gloves, while operating the brushcutter with metal blade.
.
Wear foot protection, while operating the brushcutter with metal blade.
Do not put hands near or under rotating cutting attachment.
Do not put feet near or under rotating cutting attachment.
7KHGLVWDQFHEHWZHHQWKHPDFKLQHDQGEVWDQGHUVVKDOOEHDWOHDVWP
Beware of thrown objects such as ricochet.
Fire Danger: Petrol is flammable. Never pour fuel to Trimmer/Brushcutter fuel tank with the running or hot engine. Do not smoke or place any sources of heat in the vicinity of fuel. Breathing exhaust fumes cause death. Never start or run the engine inside a closed room or building.
Breathing exhaust fumes cause death. Never start or run the engine inside a closed room or building.
Hot Surface Caution: Contact may cause burns. During use and some time after stopping the engine, the engine and the gearcase are very hot. Do not touch the hot surface of the unit such as engine cover, cylinder, muffler and gearcase.
Machines fitted with Brush Cutter Blade can be thrown violently to the side when balde comes into contact with a fixed object. 7KLVLVFDOOHGEODGHWKUXVWNLFNEDFN7KHEODGHLVFDSDEOHRIDPSXWDWLQJDQDUPRUOHJ$OZDVVZLQJWKH%UXVKFXWWHUIURPULJKW to left. 0D F H H
Maximum speed of output axle, min-1. -1.
*XDUDQWHHGVRXQGSRZHUOHYHOG%$ G%$ G%$

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[WX21L] [WX21] [WX24, WX27, WX30, WX42, WX50]

SAFETY INSTRUCTIONS
The warming system in This manual identifies potential hazards and has special safety messages that help you and others avoid personal injury, even death.
DANGER WARNING CAUTION signal words to identify the level of hazard.
DANGER : signals an extreme hazard that will cause serious injury or death if the recommended precautions are not followed.
WARNING : signals a hazard that may cause serious injury or death if the recommended precautions are not followed.
CAUTION : signals a hazard that may cause minor or moderate injury if the recommended precautions are not followed. Two other words are also used to highlight information. “Important” calls attention to special mechanical information and “Note” emphasizes general information worthy of special attention.

OPERATOR SAFETY 1. Read and understand this Manual before using the Brushcutter/Grass Trimmer. Be
thoroughly familiar with the proper use of this Brushcutter/Grass Trimmer. $OZDVZHDUHHSURWHFWLRQDQGKHDULQJSURWHFWLRQ $OZDV ZHDU KHDY ORQJ SDQWV D ORQJ VOHHYHG VKLUW ERRWV DQG JORYHV ‘R QRW ZHDU
loose clothing, jewelry, short pants, sandals, or go barefoot. Secure hair so it is above shoulder length. 1HYHU RSHUDWH WKLV %UXVKFXWWHUUDVV 7ULPPHU ZKHQ RX DUH WLUHG LOO RU XQGHU WKH influence of alcohol, drugs or medication. 1HYHU VWDUW RU UXQ WKH HQJLQH LQVLGH D FORVHG URRP RU EXLOGLQJ %UHDWKLQJ H[KDXVW fumes can cause death. .HHSWKHJULSVFOHDQRIRLOIXHODQGGLUW
BRUSHCUTTER/GRASS TRIMMER SAFETY 1. Shut off the engine and be certain the cutting attachment has completely stopped
rotating before inverting the Brushcutter/Grass Trimmer, performing maintenance on or working on the machine. 0DNHVXUHWKH%UXVKFXWWHUUDVV7ULPPHULVDVVHPEOHGFRUUHFWODQGWKDWWKHFXWWLQJ attachment is correctly installed and securely fastened as instructed in the Assembly VHFWLRQSDJH ,QVSHFW WKH %UXVKFXWWHU*UDVV7ULPPHU EHIRUH HDFK XVH 5HSODFH GDPDJHG SDUWV Check for fuel leaks. Make sure all fasteners are in place and tightened securely. )ROORZWKHPDLQWHQDQFHLQVWUXFWLRQVEHJLQQLQJRQSDJH

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,QVSHFW WKH FXWWLQJ DWWDFKPHQW DQG UHSODFH DQ SDUWV WKDW DUH FUDFNHG FKLSSHG RU damaged before using the Brushcutter/Grass Trimmer.
0DNHVXUHWKHFXWWLQJDWWDFKPHQWLVLQVWDOOHGDQGSRVLWLRQHGFRUUHFWOEHIRUHXVLQJWKH Brushcutter/ Grass Trimmer.
1HYHUXVHDFXWWLQJDWWDFKPHQWRUUHSODFHPHQWSDUWVWKDWDUHQRWDSSURYHGE8QLVDZ 0DLQWDLQ WKH %UXVKFXWWHUUDVV 7ULPPHU DFFRUGLQJ WR WKH UHFRPPHQGHG PDLQWHQDQFH
LQWHUYDOVDQGSURFHGXUHVLQWKH0DLQWHQDQFHVHFWLRQEHJLQQLQJRQSDJH ,IUXQQLQJSUREOHPVRUH[FHVVLYHYLEUDWLRQRFFXUVWRSLPPHGLDWHODQGLQVSHFWWKHXQLW
for the cause. If the cause cannot be determined or is beyond your ability to correct,
return the Brush-cutter/Grass Trimmer to your servicing Unisaw dealer for repair.
7KH([KDXVWJDVHVDUHH[WUHPHOKRW.HHSÀDPPDEOHPDWHULDOVDQGREMHFWVDWOHDVW 1m away from the direction that the exhaust gases are coming out of the muffler.
Do not cover the exhaust gases with any items. There is a high risk of materials and
REMHFWVFDWFKLQJ¿UHDQGJHWWLQJEXUQHG 11. During the operation and idling of the unit, the engine is very hot. Also, for a while
DIWHUWKHHQJLQHVWRSVWKHHQJLQHLVVWLOOKRW’RQRWSODFHWKHHQJLQHQHDUÀDPPDEOH PDWHULDOVVXFKDVGULHGJUDVV7KHUHLVDKLJKULVNRIPDWHULDOVFDWFKLQJ¿UH
FUEL SAFETY
1. Gasoline is highly flammable and must be handled and stored carefully. Use a
container approved for fuel for storing petrol and/or fuel/oil mixture.
0L[DQGSRXUIXHORXWGRRUVDQGZKHUHWKHUHDUHQRVSDUNVRUÀDPHV ‘RQRWVPRNHQHDUIXHORU%UXVKFXWWHUUDVV7ULPPHURUZKLOHXVLQJWKH%UXVKFXWWHU
Grass Trimmer.
‘RQRWRYHU¿OOWKHIXHOWDQN6WRS¿OOLQJPPIURPWKHWRSRIWKHWDQN :LSHXSDQVSLOOHGIXHOEHIRUHVWDUWLQJWKHHQJLQH 0RYHWKH%UXVKFXWWHU*UDVV7ULPPHUDWOHDVWPDZDIURPWKHIXHOLQJORFDWLRQEHIRUH
starting the engine.

‘RQRWUHPRYHWKH%UXVKFXWWHUUDVV7ULPPHUIXHOWDQNFDSLPPHGLDWHODIWHUVWRSSLQJ the engine.
$OORZWKHHQJLQHWRFRROEHIRUHUHIXHOLQJ ‘UDLQWKHWDQNDQGUXQWKHHQJLQHGUEHIRUHVWRULQJWKHXQLW 6WRUH IXHO DQG %UXVKFXWWHUUDVV 7ULPPHU DZD IURP RSHQ IODPH VSDUNV DQG
H[FHVVLYHKHDW0DNHVXUHIXHOYDSRUVFDQQRWUHDFKVSDUNVRURSHQÀDPHVIURPZDWHU heaters, furnaces, electric motors, etc.
BRUSHCUTTER/ GRASS TRIMMER OPERATING SAFETY
1. THIS BRUSHCUTTER/GRASS TRIMMER CAN CAUSE SERIOUS INJURIES.
Read the instructions carefully. Be familiar with all controls and the proper use of the
Brushcutter/ Grass Trimmer. 1HYHU DOORZ FKLOGUHQ WR RSHUDWH WKH %UXVKFXWWHUUDVV 7ULPPHU ,W LV QRW D WR 1HYHU
DOORZDGXOWVWRRSHUDWHWKHXQLWZLWKRXW¿UVWUHDGLQJWKLV2SHUHDWRU
V0DQXDO $YRLG XVLQJ WKH %UXVKFXWWHUUDVV7ULPPHU QHDU URFNV JUDYHO VWRQHV DQG VLPLODU
material that would cause harmful missiles. .HHS FKLOGUHQ EVWDQGHUV DQG DQLPDOV RXWVLGH DP UDGLXV IURP WKH RSHUDWRU DQG
Brushcutter/Grass Trimmer. ,IRXDUHDSSURDFKHGZKLOHRSHUDWLQJWKH%UXVKFXWWHUUDVV7ULPPHUVWRSWKHHQJLQH
and cutting attachment rotation. 8VHWKH%UXVKFXWWHUUDVV7ULPPHURQOLQGDOLJKWRUJRRGDUWL¿FLDOOLJKW 1HYHURSHUDWHWKH%UXVKFXWWHU*UDVV7ULPPHUZLWKRXWSURSHUJXDUGVLQSODFH ‘RQRWSXWKDQGVRUIHHWQHDURUXQGHUDQURWDWLQJSDUWV.HHSFOHDUDWDOOWLPHV.HHS
all parts of your body away from the rotating cutting attachment and hot surfaces such DVWKHPXIÀHU :KHQ FXWWLQJ KHDY EUXVK RU VPDOO WUHHV DOZDV VZLQJ WKH %UXVKFXWWHU IURP ULJKW WR left to prevent kick-back. .HHSD¿UPIRRWLQJDQGEDODQFH’RQRWRYHUUHDFK 11. Use the right tool for the job. Do not use the is not recommended by Unisaw.

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352’8&7′(6&5,37,21

WX21L
1

11

1. Gearcase
6KDIW$VVHPEO 6DIHW’HFDO 0RGHO1DPH +RUQ+DQGOH $WWDFKPHQW5LQJIRU6KRXOGHU+DPHVV 7KURWWOH7ULJJHUDQG6WRS6ZLWFK 6KDIW*ULS &OXWFK’UXP+RXVLQJ (QJLQH 11. Air Filter
)XHO7DQN 7KURWWOH&DEOHDQG6WRS6ZLWFK:LUHV 6KRXOGHU+DUQHVV6WUDS Blade Guard %UXVKFXWWHU%ODGH +DQGOHJULS Loop Handle

WX21
1

WX24 WX27 WX30 WX42 WX50
1

11

11

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[#7-1]

Screw

[#7-2]

Throttle Trigger and Stop Switch
+RUQ+DQGOH
6FUHZùXUXE

[#7-3]

Screw

Loop Handle
D

Rubber Sleeve 3P
Nut

Shaft Assembly
Bottom Clamp

Stop Switch Wires and Throttle Cable

Clamp Bracket

ASSEMBLY
ASSEMBLING ENGINE AND DRIVE SHAFT ASSEMBLY [#7-1] Attach the clutch drum housing to the engine using the four screws supplied with the unit.
HORN HANDLE INSTALLATION [#7-2] IMPORTANT: Be careful not to damage the throttle cable and stop switch wires when you remove the horn handles from the carton.
1. Loosen the four screws on the top of the clamp bracket. ,QVHUW WKH OHIW DQG ULJKW KRUQ KDQGOHV LQWR WKH FODPS EUDFNHW 1RWH WKDW WKH KRUQ KDQGOH
with the throttle trigger and stop switch goes on the right-hand side of the Brushcutter/ Grass Trimmer. $GMXVWWKHKRUQKDQGOHVWRWKHGHVLUHGSRVLWLRQWKHQWLJKWHQWKHIRXUVFUHZV

LOOP HANDLE INSTALLATION
1. Slip the rubber sleeve around the shaft assembly. [#7-3] 3ODFHWKHORRSKDQGOHDQGWKHERWWRPFODPSRYHUWKHUXEEHUVOHHYH ,QVWDOOWKHIRXUVFUHZVDQGQXWV7LJKWHQWKHVFUHZVHYHQO

[#7-1] [#7-2] [#7-3] [#7-1] [#7-2] [#7-3]

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[#8-1]

&DUEXUHWRUEUDFNHW

[#8-2]

Throttle Cable

&DEOH$GMXVWHU6OHHYH
[WX21L, WX21]

Lock Nut

[#8-3]

&DUEXUHWRUEUDFNHW

[#8-4]

Cable Adjuster Sleeve
Throttle Cable

Lock Nut
[WX24, WX27, WX30, WX42, WX50]

CONNECTING THROTTLE CABLE AND STOP SWITCH WIRES
[WX21L, WX21] 1. Insert the throttle cable through the cable adjuster sleeve. [#8-1] [WX24, WX27, WX30, WX42, WX50] 1. Insert the throttle cable through the carburetor bracket, then screw a cable adjuster
sleeve into the carburetor bracket fully. [#8-3] [All models] 3RVLWLRQWKHVORWWHG¿WWLQJRQWKHFDUEXUHWRUVRWKHUHFHVVHGKROHIRUWKHOXJLVDZD
from the cable adjuster sleeve.
5RWDWH WKH FDUEXUHWRU WKURWWOH FDP DQG VOLS WKH WKURWWOH FDEOH WKURXJK WKH VORW LQ WKH VORWWHG¿WWLQJPDNLQJVXUHWKHFDEOHOXJGURSVLQWRWKHUHFHVVHGKROH[#8-2,

8-4] 2SHUDWHWKHWKURWWOHWULJJHUDIHZWLPHVWRPDNHVXUHWKDWLWZRUNVFRUUHFWO

6ORWWHG)LWWLQJ Cable Lug
5HFHVVHG+ROH
6ORWWHG)LWWLQJ Cable Lug
5HFHVVHG+ROH

[WX21L, WX21] [#8-1] [WX24, WX27, WX30, WX42, WX50] [#8-3] >@ [#8-2, #8-4] [WX21L, WX21] [#8-1] [WX24, WX27, WX30, WX42, WX50] [#8-3] >@ [#8-2, #8-4] [#9-1] PP3OD [#9-2] Stop switch wires Cables del interruptor [#9-3]

Clamp

[#9-4]

&ODPS

[WX21L, WX21] [WX42, WX50]

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$GMXVW WKH FDEOH DGMXVWHU VOHHYH VR WKH VWRS RQ WKH FDUEXUHWRU WKURWWOH FDP MXVW FRQWDFWVWKHWKURWWOHVWRSDQGWKHFDEOHSRVLWLRQNHHSPPSODEHWZHHQFDEOHOXJDQG VORWWHG¿WWLQJVZKHQWKHWKURWWOHWULJJHULVIXOOGHSUHVVHG[#9-1] :KHQWKHWKURWWOHFDEOHLVDGMXVWHGFRUUHFWOWLJKWHQWKHORFNQXW 3OXJ WKH VWRS VZLWFK ZLUHV LQWR WKH PDWFKLQJ FRQQHFWRUV IURP WKH HQJLQH 1RWH WKDW
wire polarity is not important. [#9-2] [WX21L, WX21] /DSDQG¿[WKHVWRSVZLWFKZLUHVDQGFRQQHFWRUVZLWKFODPS[#9-3] [WX42, WX50] /DSDQG¿[WKHVWRSVZLWFKZLUHVDQGFRQQHFWRUVZLWKFODPS[#9-4] [#9-1] [#9-2] [WX21L, WX21] [#9-3] [WX42, WX50] [#9-4] [#9-1] ¶
[#9-2] [WX21L, WX21] ¶[#9-3] [WX42, WX50] ¶[#9-4]

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Thick plastic tube

Thin plastic tube Y
[WX24, WX27, WX30]

Matching connectors
& ¶

[WX24, WX27, WX30] After the connecting the stop switch wires, install the plastic tube as shown.
1. Position the matching connectors on the thin plastic tube. &RYHUWKHPDWFKLQJFRQQHFWRUVDQGWKHWKLQSODVWLFWXEHZLWKWKHWKLFNSODVWLFWXEH %LQGWKHWKLFNSODVWLFWXEHZLWKWKHEDQG 7KHQFXWRXWWKHH[WUDOHQJWKRIWKHEDQG

Band

[WX24, WX27, WX30] [WX24, WX27, WX30] ¶ ¶

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[#11-1]

3ODWH
*HDUFDVH Blade Guard

[#11-2]

Guard extension

[#11-3] String Cutoff Blade [#11-4]

Square nut

Blade Guard

*XLGH

[#11-5] +RRN

0î 6FUHZ

Guard extension

Hook

INSTALLING GUARD
WARNING
POTENTIAL HAZARD · Foreign objects can be thrown by Brushcutter/Grass Trimmer. WHAT CAN HAPPEN · Contact with thrown objects can cause personal injury. HOW TO AVOID THE HAZARD · Never operate the Brushcutter/Grass Trimmer without the guard in place.

BLADE GUARD Attach the blade guard to the gearcase with the Plate as shown on [#11-1].
TRIMMER HEAD GUARD ,QVWDOOWKHVWULQJFXWRIIEODGHDQGJXDUGH[WHQVLRQWRWKHEODGHJXDUG

1. Insert the square nut into guard extension as shown on [#11-2]. $ WWDFK WKH 6WULQJ &XWRII %ODGH WR JXDUG H[WHQVLRQ XVLQJ 0î 6FUHZ ORFNLQJ ZLWK
   VTXDUHQXWRQDVVKRZQRQ[#11-3]. ( QWHUWKHJXLGHLQWKHVORWRI%ODGH*XDUGRQ[#11-4]. Make sure place the three hooks
   into the position on the guard as shown on [#11-5].

· H

[#11-1].
1. [#11-2].
0 >@ [#11-3]. [#11-4]. [#11-5]. [#11-1] [#11-2] 0[ [#11-3] [#11-4] [#11-5]

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[#12-1]

Trimmer Head

Trimmer Head Adapter

Attaching Shaft
Boss Adapter

Left-hand thread
Gearcase

+H[:UHQFKPP

[WX21L, WX21, WX24] [#12-2]

Trimmer Head

Clamping Washer

Attaching Shaft

Boss Adapter
Gearcase

Trimmer Head Adapter
Left-hand thread
+H[:UHQFKPP
[WX27, WX30]

INSTALLING CUTTING ATTACHMENT
TRIMMER HEAD
WARNING
POTENTIAL HAZARD · If the trimmer head is not adequately tightened, it can come loose from the
Brushcutter/ Grass Trimmer during use. WHAT CAN HAPPEN · This may cause damage to property or personal injury. HOW TO AVOID THE HAZARD · Make sure the trimmer head is securely fastened to the attaching shaft in the
gearcase.
[WX21L, WX21, WX24] [#12-1] IMPORTANT: Make sure the trimmer head is for LEFT- HAND ROTATION &RXQWHUFORFNZLVH DV YLHZHG IURP WKH RSHUDWRU¶V SRVLWLRQ DQG WKDW WKH WULPPHU head has M8 left-hand thread. 1. Remove the blade nut and clamping washer from the attaching shaft out of the gearcase.
.HHSWKHEODGHQXWDQGFODPSLQJZDVKHU Note: The blade nut has left-hand thread. $OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHJXLGHKROHLQWKHJHDUFDVH ,QVHUWWKH+H[:UHQFKPPLQWRWKHKROHLQWKHERVVDGDSWHUDQGWKHJXLGHVORWLQWKH
gearcase to lock the attaching shaft.

7KUHDGWKHWULPPHUKHDGIRUWKHDWWDFKLQJVKDIWWKHQWLJKWHQWKHWULPPHUKHDGEKDQG Note: The trimmer head has left-hand thread. 5HPRYHWKH+H[:UHQFKPPIURPWKHERVVDGDSWHUDQGJHDUFDVH
[WX27, WX30] [#12-2] IMPORTANT: Make sure the trimmer head is for LEFT- HAND ROTATION &RXQWHUFORFNZLVHDVYLHZHGIURPWKHRSHUDWRU¶VSRVLWLRQDQGWKDWWKHWULPPHUKHDG
has M8 left-hand thread. 1. Remove the blade bolt and the stabilizer from the attaching shaft out of the gearcase.
.HHSWKHVWDELOL]HUDQGEODGHEROW Note: The blade bolt has left-hand thread. $OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHJXLGHVORWLQWKHJHDUFDVH ,QVHUWWKH+H[:UHQFKPPLQWRWKHKROHLQWKHERVVDGDSWHUDQGWKHJXLGHVORWLQWKH
gearcase to lock the attaching shaft. 7KUHDGWKHWULPPHUKHDGIRUWKHDWWDFKLQJVKDIWWKHQWLJKWHQWKHWULPPHUKHDGEKDQG Note: The trimmer head has left-hand thread. 5HPRYHWKH+H[:UHQFKPPIURPWKHERVVDGDSWHUDQGJHDUFDVH

[WX21L, WX21, WX24] [#12-1] 0 [WX27, WX30] [#12-2] 0 [WX21L, WX21, WX24] [#12-1] 0 [WX27, WX30] [#12-2] 0

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Direction of the clamping washer
Turn the convex part up

Trimmer Head

Trimmer Head Adapter

Clamping Washer
Attaching Shaft
Gearcase
[WX42, WX50]

Left-hand thread
Boss Adapter
+H[:UHQFKPP

[WX42, WX50] IMPORTANT: Make sure the trimmer head is for LEFT-HAND ROTATION (counter-
FORFNZLVH DV YLHZHG IURP WKH RSHUDWRU¶V SRVLWLRQ DQG WKDW WKH WULPPHU KHDG adapter is a female, M10 left-hand thread.
1. Remove the blade nut and stabilizer from the attaching shaft out of the gearcase.
.HHSWKHEODGHQXWDQGVWDELOL]HU Note: The blade nut has left-hand thread.
$OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHKROHLQWKHJHDUFDVH ,QVHUW WKH +H[ :UHQFK PP into the hole in the boss adapter and the hole in the
gearcase to lock the attaching shaft.
7KUHDG WKH WULPPHU KHDG DGDSWHU LQWR WKH DWWDFKLQJ VKDIW WKHQ WLJKWHQ WKH WULPPHU head by hand.
Note: The trimmer head adapter has left-hand thread.
5HPRYHWKH+H[:UHQFKPP from the boss adapter and gearcase. [WX42, WX50] 0 [WX42, WX50] 0

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[#14-1] Blade Nut

Clamping Washer
Attaching Shaft
Boss Adapter
Gearcase

Brushcutter Blade
Left-hand thread
+H[:UHQFKPP

[WX21L, WX21, WX24] [#14-2]

Left-hand thread

Clamping Washer

Attaching Shaft

Blade Bolt
Stabilizer
Brushcutter Blade
Boss Adapter

Gearcase

[WX27, WX30]

+H[:UHQFKPP

BRUSHCUTTER BLADE
WARNING
POTENTIAL HAZARD · If the Brushcutter blade is not adequately tightened, it can come loose from the
Brushcutter during use. WHAT CAN HAPPEN · This may cause damage to property or personal injury. HOW TO AVOID THE HAZARD · Make sure the Brushcutter blade is securely fastened to the attaching shaft in the
gearcase.
CAUTION
POTENTIAL HAZARD · Brushcutter blade is sharp. WHAT CAN HAPPEN · Contact with sharp blade can cause personal injury. HOW TO AVOID THE HAZARD · Wear gloves when you handle the blade.

[WX21L, WX21, WX24] [#14-1] 1. Remove the blade nut and clamping washer from the attaching shaft out of the
gearcase. Note: The blade nut has left-hand thread. ,QVWDOOWKHEUXVKFXWWHUEODGHRQWRWKHERVVDGDSWHUWKHQUHLQVWDOOWKHFODPSLQJZDVKHU
and the blade nut. $OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHJXLGHVORWLQWKHJHDUFDVH ,QVHUWWKH+H[:UHQFKPP into the hole in the boss adapter and the guide slot in the
gearcase to lock the attaching shaft. 7LJKWHQWKHEODGHEROW 5HPRYHWKH+H[:UHQFKPP from the boss adapter and gearcase.
[WX27, WX30] [#14-2] 1. Remove the blade bolt, the stabilizer and the clamping washer from the attaching shaft
out of the gearcase. Note: The blade bolt has left-hand thread. ,QVWDOOWKHEUXVKFXWWHUEODGHRQWRWKHERVVDGDSWHUWKHQUHLQVWDOOWKHFODPSLQJZDVKHU
the stabilizer and the blade bolt. $OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHJXLGHVORWLQWKHJHDUFDVH ,QVHUWWKH+H[:UHQFKPP into the hole in the boss adapter and the guide slot in the
gearcase to lock the attaching shaft. 7LJKWHQWKHEODGHEROW 5HPRYHWKH+H[:UHQFKPPn from the boss adapter and gearcase.
[WX21L, WX21, WX24] [#14-1] [WX27, WX30] [#14-2] [WX21L, WX21, WX24] [#14-1] [WX27, WX30] [#14-2]

ENGLISH

Left-hand thread
Stabilizer
Brushcutter Blade
Attaching Shaft
Gearcase
[WX42, WX50]

Blade Nut
Clamping Washer

Direction of the clamping washer
Turn the convex part up

Hold the brushcutter blade
Boss Adapter

+H[:UHQFKPP

[WX42, WX50] 1. Remove the blade nut, stabilizer and clamping washer from the attaching shaft out of
the gearcase. Note: The blade nut has left-hand thread. ,QVWDOOWKHEUXVKFXWWHUEODGHRQWRWKHERVVDGDSWHUWKHQUHLQVWDOOWKHFODPSLQJZDVKHU
stabilizer and blade nut. $OLJQWKHKROHLQWKHERVVDGDSWHUZLWKWKHJXLGHKROHLQWKHJHDUFDVH ,QVHUW WKH +H[ :UHQFK PP into the hole in the boss adapter and the hole in the
gearcase to lock the attaching shaft. 7LJKWHQWKHEODGHQXW 5HPRYHWKH+H[:UHQFKPP from the boss adapter and gearcase. [WX42, WX50] [WX42, WX50]

ENGLISH

[#16-1] Brushcutter Blade
Hook

Blade Cover

[#16-2]

Red Band

6WUDS

Pull
Hook Ring

[#16-3] Pull Red Tab
Hook

Shoulder Harness
Ring

[WX21L, WX21] [WX24, WX27, WX30, WX42, WX50]

INSTALLING BLADE COVER [#16-1] CAUTION
POTENTIAL HAZARD · Brushcutter blade is sharp. WHAT CAN HAPPEN · Contact with sharp blade can cause serious personal injury. · An unprotected blade is subject to damage. HOW TO AVOID THE HAZARD .HHSWKHEODGHFRYHURQWKHEODGHZKHQWKH%UXVKFXWWHULVQRWXVH
This will protect persons from injury from blade contact, and will protect the blade from damage.
1. Insert the tips of the blade into the grooves in the blade cover. :LQGWKHFRYHUDURXQGWKHEODGHWKHQVQDSWKHKRRNWRVHFXUHWKHEODGHFRYHU

ATTACHING SHOULDER STRAP/HARNESS [#16-2, #16-3] WARNING
POTENTIAL HAZARD · Without the Shoulder Harness or Strap Installed on the Brushcutter/Grass Trimmer,
the blade can produce side thrust which can expose the operator and bystanders to blade contact. WHAT CAN HAPPEN · Contact with Brushcutter blade can cause severe personal injury. HOW TO AVOID THE HAZARD · Never operate the Brushcutter/Grass Trimmer without installing and using the Shoulder Strap/Harness.
Snap the Hook into the ring on the drive shaft. To detach the Harness/Strap quickly from the Brushcutter/Grass Trimmer, pull upward on the Red-Band/Tab.

[#16-1] [#16-2, #16-3] [#16-1]

±

[#16-2, #16-3]

¶

P

ENGLISH

BEFORE OPERATION
OIL AND FUEL
1. Mix and pour fuel outdoors and where there are no spark s or flames. $OZDVVKXWRIIWKHHQJLQHEHIRUHUHIXHOLQJ1HYHUUHPRYHWKHIXHOWDQNFDSZKLOHWKH
engine is running or immediately after stopping the engine .
WARNING
POTENTIAL HAZARD · Petrol contains gasses that can build up pressure inside a fuel tank. WHAT CAN HAPPEN · Fuel can be sprayed on you when removing fuel tank cap. HOW TO AVOID THE HAZARD · Remove fuel tank cap slowly to avoid injury from fuel spray.
$OZDVRSHQWKHIXHOWDQNFDSVORZOWRUHOHDVHDQSRVVLEOHSUHVVXUHLQVLGHWKHWDQN ‘RQRWRYHUILOOWKHIXHOWDQN6WRSILOOLQJPPIURPWKHWRSRIWKHWDQN 7LJKWHQWKHIXHOWDQNFDSFDUHIXOOEXWILUPODIWHUUHILOOLQJ

:LSHXSDQVSLOOHGIXHOEHIRUHVWDUWLQJWKHHQJLQH 0 RYH WKH %UXVKFXWWH U DW OHDVW P DZD IURP WKH IXHOLQJ ORFDWLRQ DQG IXHO VWRUDJH
container before starting the engine.
DANGER
POTENTIAL HAZARD · In certain conditions petrol is extremely flammable and highly explosive. WHAT CAN HAPPEN · A fire or explosion from petrol can burn you, others and cause property damage. HOW TO AVOID THE HAZARD · Use a funnel and ll the fuel tank outdoors, in an open area, when the engine is cold.
Wipe up any petrol that spills. ‘RQRWOOWKHIXHOWDQNFRPSOHWHO$GGSHWUROWRWKHIXHOWDQNXQWLOWKHOHYHOLVPP
below the bottom of the filler neck. This empty space in the tank allows petrol to expand. · Never smoke when handling petrol, and stay away from an open flame with petrol in an approved container and keep it out of the reach of children. · Do not use the old fuel more than 1 month.

¶ ¶

Petrol

1 litre
OLWUHV OLWUHV

7ZRVWURNHRLO

0$58<$0$JHQXLQHRLO.HPQLJKW .HPQLJKW0$58<$0$
0$58<$0$.HPQLJKW

ISO-L-EGC/ EGD, JASO class FC/ FD, or equivalent twostroke oil
,62/(&(’-$62)&)’
,62/(&(’-$62)&)’

ISO-L-EGB, JASO class FB, or equivalent two-stroke oil ,62/(%-$62)%
,62/(%-$62)%

P/

P/

P/

P/

P/

P/

P/

P/

P/

RECOMMENDED OIL TYPE: Only use a two-stroke engine oil formulated for use in high-performance, air-cooled two-stroke engines.
IMPORTANT: Do not use two-stroke oil intended for water cooled outboard motors. This type of two-stroke engine oil does not have the additives for air-cooled two-stroke engines and can cause engine damage.
Do not use automotive motor oil. This type of oil does not have the proper additives for air-cooled two-stroke engines and can cause engine damage.
RECOMMENDED FUEL TYPE: 8VHFOHDQXQOHDGHGSHWUROZLWKDQRFWDQHUDWLQJRIRUKLJKHU Use of unleaded petrol results in fewer combustion chamber deposits and longer spark plug life. Use of premium grade fuel is not necessary or recommended.
IMPORTANT: Never use gasohol or alcohol blended fuels in this engine.
MIXING PETROL AND OIL
IMPORTANT: The engine used on this Brushcutter/Grass Trimmer is of a two- stroke design. The internal moving parts of the engine, i.e., crankshaft bearings, piston pin bearings and piston to cylinder wall contact surfaces, require oil mixed with the petrol for lubrication. Failure to add oil to the petrol or failure to mix oil with the petrol at the appropriate ratio will cause major engine damage which will void your warranty.

FUEL MIXTURE CHART Refer to the chart above.
MIXING INSTRUCTIONS IMPORTANT: Never mix petrol and oil directly in the Brushcutter/Grass Trimmer fuel tank.
1. Always mix fuel and oil in a clean container approved for petrol. 0DUNWKHFRQWDLQHUWRLGHQWLILWDVIXHOPL[IRUWKH%UXVKFXWWHUUDVV7ULPPHU 8VHUHJXODUXQOHDGHGSRWURODQG¿OOWKHFRQWDLQHUWKHQDGGWKHUHPDLQLQJDPRXQWRISHWUDO 3RXUWKHFRUUHFWDPRXQWRIRLOLQWRWKHFRQWDLQHUWKHQDGGWKHUHPDLQLQJDPRXQWRISHWURO &ORVH WKH FRQWDLQHU WLJKWO DQG VKDNH LW PRPHQWDULO WR HYHQO PL[ WKH RLO DQG WKH SHWURO
EHIRUH¿OOLQJWKHWDQNRQWKH%UXVKFXWWHUUDVV7ULPPHU :KHQUHOOLQJWKH%UXVKFXWWHU*UDVV7ULPPHUIXHOWDQNFOHDQDURXQGWKHIXHOWDQNFDSWRVWRS
dirt and debris from entering the tank during cap removal. $OZDVVKDNHWKHSUHPL[IXHOFRQWDLQHUPRPHQWDULOEHIRUH¿OOQJWKHIXHOWDQN $OZDVXVHDVSRXWRUIXQQHOZKHQIXHOLQJWRUHGXFHIXHOVSLOODJH )LOOWKHWDQNRQOWRZLWKLQPPIURPWKHWRSRIWKHWDQN$YRLG¿OOLQJWRWKHWRSRIWKHWDQN
¿OOHUQHFN

ENGLISH

–

–

¶

–

¶ –
–

ENGLISH

[#179-1] [[##1179–22]] Primer Bulb/

Starter Grip/

[#197-3]

Primer Bulb/

Fuel return line/ W
Starter Grip/
Choke Lever/
[WX21L, WX21, WX27, WX24]

Fuel return line/
W Primer Bulb/

Fuel return line/ W
Choke Lever/

Starter Grip/

Choke Lever/
[WX30] [WX42, WX50]

STARTING AND STOPPING
BEFORE STARTING THE ENGINE 1. Fill the fuel tank as instructed in the Before Operation section of this manual. 5HVWWKH%UXVKFXWWHU*UDVV7ULPPHURQWKHJURXQG 0DNHVXUHWKHFXWWLQJDWWDFKPHQWLVFOHDURIDQEURNHQJODVVQDLOVZLUHURFNVRURWKHU
debris. .HHSDOOEVWDQGHUVFKLOGUHQDQGDQLPDOVDZDIURPWKHZRUNLQJDUHD

COLD STARTING PROCEDURE [#19-1, #19-2, #19-3] The carburetor on this engine is equipped with a fuel primer and a choke system. To start a “cold” engine properly, perform the following procedure:
1. Pump the primer bulb until fuel can be seen flowing through the fuel return line to the fuel tank. Flowing fuel should be almost clear, not foamy or full of bubbles.
7XUQWKHFKRNHOHYHUWRWKH&ORVH³ ” position.
[WX21L, WX21] 3XOOWKHVWDUWHUJULSZLWKRXWWKURWWOHWULJJHURSHUDWLRQ[#21-1] [WX24, WX30] :LWKWKHVWRS VZLWFK³67$57´21DQGWKHWKURWWOHWULJJHUSRVLWLRQHGDW)DVWLGOHVWDUW
position, pull the starter grip. [#21-2] [WX27, WX42, WX50] With the stop switch ” ´ 21 DQG WKH WKURWWOH WULJJHU SRVLWLRQHG DW )DVWLGOH VWDUW
position, pull the starter grip. [#21-3]

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[#21-2] [WX27, WX42, WX50] © ª 21
[#21-3]

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[WX21L, WX21] [#21-1] [WX24, WX30] ©67$57ª21
[#21-2] [WX27, WX42, WX50] ©,ª21
[#21-3]

ENGLISH

CAUTION
· Do not pull the Starter rope all the way out . It may damage the machine.
WARNING
· Do not disassemble the Starter. Please ask for an authorized Unisaw service dealer.
After the engine is started turn the choke lever to the Open ” ” position.
[WX24, WX27, WX30, WX42, WX50] Then squeeze and release the throttle trigger to allow it to return to the idle position.
If the engine stops running before you turn the choke lever to ” ” position. [WX21L, WX21] Go ahead and open the choke, pull the starter grip. [WX24, WX27, WX30, WX42, WX50] Go ahead and open the choke, pull the starter grip with the throttle trigger positioned at Fast-idle start position.

HOT RESTART
7RVWDUWWKHHQJLQHWKDWLVDOUHDGZDUPHGXSKRWUHVWDUW 1. Pump the primer bulb until fuel can be seen flowing through the fuel return line to the
fuel tank. Flowing fuel should be almost clear, not foamy or full of bubbles.
[WX21L, WX21] 7XUQWKHFKRNHOHYHUWRWKH2SHQ³ ” position. [WX24, WX30] 7XUQ WKH FKRNH OHYHU WR WKH 2SHQ ³ ” position, and set the stop switch to the
³67$57´21SRVLWLRQ [WX27, WX42, WX50] 7XUQWKHFKRNHOHYHUWRWKH2SHQ³ ” position, and set the stop switch to the ” ´21
position.
/HDYHWKHWKURWWOHWULJJHULQWKHLGOHSRVLWLRQDQGSXOOWKHVWDUWHUJULS ,I WKH HQJLQH IDLOV WR VWDUW DIWHU WKUHH WR IRXU SXOOV IROORZ WKH LQVWUXFWLRQV LQ WKH &ROG
Starting Procedure section above.
If the engine fails to start after you follow the above procedures, contact an authorized Unisaw dealer.
TO STOP THE ENGINE
[WX21L, WX21] [#21-1] 1. Release the throttle lever. 3XVKWKHVWRSVZLWFKRIWKHWKURWWOHWULJJHUXQWLOWKHHQJLQHZLOOVWRS
[WX24, WX27, WX30, WX42, WX50] [#21-2, #21-3] 1. Release the throttle trigger. 0RYHWKHVWRSVZLWFKWR³6723´2))SRVLWLRQ

·

· D8QLVDZ
³ “.
[WX24, WX30, WX42] ³ “. [WX21L, WX21] [WX24, WX30, WX42] [WX21L, WX21] ³ [WX24, WX30] ³ ©67$57ª21
[WX27, WX42, WX50] ³ © ª21.

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[WX24, WX30, WX42] ³ “. [WX21L, WX21] [WX24, WX30, WX42] [WX21L, WX21] © ª [WX24, WX30] © ª ©67$57ª21 [WX27, WX42, WX50] © ª © ª21

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[WX21L, WX21] [#18-2] E
[WX24, WX27, WX30, WX42, WX50] [#11-2, #21-3] ©6723ª2))

ENGLISH

[#21-1]

Control Lever/ 3 %
Throttle Lever/ 3 %

Stop switch/

Throttle Trigger/

[WX21L, WX21] [#21-2]

Fast-idle start lock/
START(ON)
STOP(OFF)

Throttle Trigger Lock Out

Stop switch interruptor “Stop”
³6WRS´ ³6WRS´

Fast-idle start position
Idle Position 3R]LLHPHUVvQJRO 3R]FMDELHJXMDáRZHJR
[WX24, WX30] [#21-3]

Fast-idle Start Lock Bloqueo de arranque ralentí rápido Bloqueio de arranque rápido-ao ralenti

Stop switch Interruptor “Stop” interruptor de paragem
(ON)

Throttle Trigger Lock Out

Throttle Trigger Gatillo del acelerador Gatilho do acelerador

[WX27, WX42, WX50]

STOP (OFF)

ENGLISH

[#22-1] L: Low speed
H: High speed
Throttle Lever 3 %

Control Lever 3 %
Blade Stop

[#22-2]

Idle speed adjustment screw

Blade Rotate
[WX21L, WX21, WX27, WX42, WX50] INSTRUCTION OF THE THROTTLE TRIGGER [#22-1] [WX21L, WX21, WX27, WX42, WX50] START THE BLADE ROTATION
1. Grasp the throttle lever. 0RYHWKHFRQWUROOHYHUWRKLJKVSHHGVLGHVORZO 7KHQHQJLQHVSHHGLQFUHDVHJUDGXDOODQGWKHEODGHVWDUWVURWDWLRQ $GMXVWWKHEODGHURWDWLRQDOVSHHGEWKHFRQWUROOHYHU Note: Engine speed does not increase by grasping the throttle lever, If the control lever is positioned at low speed side fully.
STOP THE BLADE ROTATION 1. The engine speed will down to idling by moving the control lever to low speed position
fully, or releasing the throttle lever. ,I RX GLG QRW FKDQJH WKH FRQWURO OHYHU SRVLWLRQ HQJLQH VSHHG EHFRPH WR WKH RULJLQDO
adjusted speed when grasp the throttle lever again.

IDLE SPEED ADJUSTMENT [#22-2] This Brushcutter/Grass Trimmer is equipped with non-adjustable fuel mixture carburetor. The idle speed is the only adjustment for the operator.
WARNING
POTENTIAL HAZARD · Engine must be running to make carburetor adjustments. · When engine is running, attached tool and other parts are moving. WHAT CAN HAPPEN · Contact with moving attached tool or other moving parts could cause serious
personal injury or death. HOW TO AVOID THE HAZARD .HHSKDQGVIHHWDQGFORWKLQJDZDIURPDWWDFKHGWRRODQGRWKHUPRYLQJSDUWV .HHSDOOEVWDQGHUVDQGSHWVDZDIURPXQLWZKLOHPDNLQJFDUEXUHWRUDGMXVWPHQWV

[#22-1] [WX21L, WX21, WX27, WX42, WX50]

S S S

S S
S

[#22-2] [#22-1] [WX21L, WX21, WX27, WX42, WX50]

E
E

%
%
E
E E
%

[#22-2]

ENGLISH

[#23-1]

Red Band

6WUDS

Pull
Hook Ring

[#23-2] Pull Red Tab
Hook

Shoulder Harness
Ring

[WX21L, WX21] [WX24, WX27, WX30, WX42, WX50]

The cutting attachment may be moving during idle speed adjustment. Wear the UHFRPPHQGHG SHUVRQDO SURWHFWLYH HTXLSPHQW DQG REVHUYH DOO VDIHW LQVWUXFWLRQV .HHS hands and body away from the attached tool.
When the throttle trigger is released, the engine should return to an idle speed. The FRUUHFWVSHHGIRUPRGHO:;DQG:;DUHPLQ-1DQGIRURWKHUVDUH PLQ- 1RUMXVWEHORZWKHFOXWFKHQJDJHPHQWVSHHG
To adjust the engine idle speed, rotate the idle speed adjustment screw on the carburetor.
7XUQWKHLGOHVSHHGVFUHZLQFORFNZLVHWRLQFUHDVHWKHHQJLQHLGOHVSHHG 7XUQWKHVFUHZRXWFRXQWHUFORFNZLVHWRGHFUHDVHWKHHQJLQHLGOHVSHHG
If idle speed adjustment is necessary, and after adjustment the cutting attachment rotates or the engine stalls, stop using the Brushcutter/Grass Trimmer LPPHGLDWHO
Contact your local authorized Unisaw Dealer for assistance and servicing.

OPERATION
WARNING
POTENTIAL HAZARD · Foreign objects can be thrown by Brushcutter/Grass Trimmer. WHAT CAN HAPPEN · Contact with thrown objects can cause personal injury. HOW TO AVOID THE HAZARD · Never operate the Brushcutter/Grass Trimmer without the cutting attachment guard in
place.
CAUTION
5HDG WKH 6DIHW LQVWUXFWLRQV EHJLQQLQJ RQ SDJH FRQFHUQLQJ SURSHU XVH RI WKH Brushcutter/Grass Trimmer.
· Always wear gloves and protective clothing when operating the Brushcutter/Grass Trimmer.
QUICK-RELEASE [#23-1, #23-2] In case of emergency, pull the red band/tab shown in illustration then Brushcutter/Grass Trimmser slide to the ground.

:;:;

8QLVDZ

[#23-1, #23-2]

:;L:; -1 -1

[] 8QLVDZ [#23-1, #23-2] [#24-1] [#24-2] [#24-3]

ENGLISH

[WX21L] [WX21] [WX24, WX27, WX30, WX42, WX50]

BRUSHCUTTER/GRASS TRIMMER OPERATING POSITION
Before using the Brushcutter/Grass Trimmer, check the following:
WARNING
POTENTIAL HAZARD · Without the shoulder harness/strap installed, the Brushcutter blade can produce side
thrust which can expose the operator and bystanders to blade contact. · If the Brushcutter/Grass Trimmer is not correctly positioned on the operator’s right
side, the blade can produce side thrust which can expose the operator and bystanders to blade contact. WHAT CAN HAPPEN · Contact with the Brushcutter blade can cause severe personal injury. HOW TO AVOID THE HAZARD · Never operate the Brushcutter/Grass Trimmer without installing and using the shoulder harness/strap. · Always operate the Brushcutter/Grass Trimmer with the unit on your right side.
1. The operator must be wearing the shoulder hanging strap attached to the Brushcutter/ Grass Trimmer, and the Brushcutter/Grass Trimmer must be on the operator’s right side.
[LOOP HANDLE MODELS] [#24-1] 7KH RSHUDWRU¶V ULJKW KDQG VKRXOG EH KROGLQJ WKH VKDIW JULS ZLWK ILQJHUV RQ WKH WKURWWOH
trigger. The right arm should be slightly bent.

7KH OHIW KDQG VKRXOG EH KROGLQJ WKH ORRS KDQGOH ZLWK WKH ILQJHUV DQG WKXPE IXOO enclosed around the grip. The left arm may be extended. Reposition the loop handle up or down the shaft assembly if necessary for a comfortable position.
[HORN HANDLE MODELS] [#24-2, #24-3] 7KHRSHUDWRU¶VULJKWKDQGVKRXOGEHKROGLQJWKHULJKWKDQGKRUQKDQGOHJULSZHWKURWWOH trigger.
7KHOHIWKDQGVKRXOGEHKROGLQJWKHOHIWKDQGKRUQKDQGOHJULSZLWKWKHDQGWKXPEIXOO enclosed around the grip.
[FOR ALL MODELS] 7KH %UXVKFXWWHU*UDVV 7ULPPHU ZHLJKW VKRXOG EH HYHQO GLVWULEXWHG EHWZHHQ WKH DUPV
The cutting attachment should be near and parallel to the ground. $FFHOHUDWHDQGKROGWKHHQJLQHDWFXWWLQJVSHHGEHIRUHHQWHULQJWKHPDWHULDOWREHFXW $OZDVUHOHDVHWKHWKURWWOHWULJJHUDQGDOORZWKHHQJLQHWRUHWXUQWRLGOHVSHHGZKHQQRW
cutting. 6WRSWKHHQJLQHZKHQPRYLQJEHWZHHQZRUNVLWHV
· If the cutting attachment becomes jammed, stop the engine immediately. · Make certain all moving parts have stopped and disconnect the spark plug before
inspecting the equipment for damage. · Never use a unit that has a chipped, cracked or broken cutting attachment or guard.

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] [#24-2, #24-3]

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[#25-1] FPDERYH*URXQG
&255(&7 [#25-4] [#25-2] [#25-3]

,1&255(&7 [#25-5]

FPDERYH*URXQG

ENGLISH

FPDERYH*URXQG

CUTTING WITH TRIMMER HEAD
WARNING
POTENTIAL HAZARD · Use of improper line could cause line to break and be thrown in operator’s or
bystander’s direction. WHAT CAN HAPPEN · Use of improper line could result in serious personal injury. HOW TO AVOID THE HAZARD · Use only good quality, commercial grade, weld resistant trimmer line with a diameter
RIPP · Do not use any type of wire or other string-like substance. Do not use metal-
reinforced line.

· The tip of the line does the cutting. The line should stay extended while cutting. [#25-1] · Do not force the line into the material. Forcing the line will cause it to slap against the
material, increasing line usage and causing poor cutting results. [#25-2] TRIMMING +ROG WKH ERWWRP RI WKH WULPPHU KHDG DERXW FP DERYH WKH JURXQG DQG DW DQ DQJOH Allow only the tip of the line to make contact. [#25-3] SCALING 7R UHPRYH XQZDQWHG YHJHWDWLRQ KROG WKH WULPPHU KHDG DERXW FP DERYH WKH JURXQG and at an angle. Allow the tip of the line to strike the ground cutting the vegetation off at the surface. [#25-4] MOWING .HHSWKHOLQHSDUDOOHOWRWKHJURXQGDQGXVHDJHQWOHVLGHWRVLGHPRWLRQ [#25-5] [#25-1] · [#25-2] [#25-3] [#25-4] [#25-5] [#25-1] [#25-2] ± [#25-3] ± [#25-4] [#25-5]

ENGLISH

[#26-1] 1R.LFNEDFN=RQH
Direction of Swing [#26-2]

‘$1*(5 .LFNEDFN=RQH

Direction of Swing

&255(&7
CUTTING DIRECTION OF BRUSHCUTTER BLADE
WARNING
POTENTIAL HAZARD · Cutting heavy brush from the wrong direction can cause the Brushcutter blade to
kick back. WHAT CAN HAPPEN · Contact with the Brushcutter blade can cause severe personal injury. HOW TO AVOID THE HAZARD · Always swing the Brushcutter from right to left when cutting heavy brush as shown.

,1&255(&7
When cutting heavy brush, always swing the Brushcutter from right to left. Swinging the Brushcutter from left to right can cause the blade to kick back. [#26-1, #26-2] CUTTING BLADES
8VHRQOWKHFRUUHFWEODGH8QLVDZJHQXLQHSDUWDSSURYHGIRUWKHDSSOLFDWLRQDQGPRGHO Brushcutter.
&DUHIXOOFKHFNWKHFRQGLWLRQRIWKHEODGHVEHIRUHDQGDIWHURSHUDWLRQ 6KDUSHQGXOOEODGHV5HSODFHDQEODGHWKDWLVZRUQFUDFNHGRUGDPDJHG ,IDEODGHSURGXFHVHFFHQWULFURWDWLRQRUYLEUDWLRQUHSODFHWKHEODGHDQGWKHERVVDGDSWHU
with genuine Unisaw parts.

[#26-1, #26-2]

8QLVDZ

8QLVDZ

[#26-1, #26-2]

8QLVDZ

8QLVDZ

[#27-1]

Foam Element

[#27-2] Filter Cover

Filter Cover
[WX21L, WX21, WX24, WX27]

Foam Element
[WX30]

MAINTENANCE
AIR FILTER
MAINTENANCE INTERVAL · The air filter should be cleaned daily, or more often when working in extremely dusty
conditions . 5HSODFHDIWHUHYHUKRXUVRIRSHUDWLRQ
AIR FILTER CLEANING [#27-1, #27-2, #27-3] 1. Remove the foam element. &OHDQWKHIRDPHOHPHQWZLWKZDUPVRDSZDWHU/HWWKHHOHPHQWGUFRPSOHWHO $SSODOLJKWFRDWRI6$(PRWRURLOWRWKHIRDPHOHPHQWDQGVTXHH]HRXWDOOH[FHVVRLO 5HDVVHPEOHWKHIRDPHOHPHQWDQGILOWHUFRYHU

[#27-3] Filter Cover
Foam Element
[WX42, WX50]

ENGLISH

@

@
6$(

[#28-1] Fuel Tank Cap

Fuel Tank

[#28-2]

Wire/

Fuel Pick-up Hose

[#28-3]

0,6-0,7mm

ENGLISH

Cap Holder

Fuel Filter

FUEL FILTER
MAINTENANCE INTERVAL 7KHIXHOILOWHUVKRXOGEHUHSODFHGDIWHUHYHUKRXUVRIRSHUDWLRQ
FUEL FILTER REPLACEMENT The fuel filter is attached to the end of the fuel pick-up hose inside the tank. To replace the fuel filter:
1. Make sure the fuel tank is empty. /RRVHQWKHIXHOWDQNFDSDQGSXOOXSDQGUHPRYHWKHFDSKROGHU [#28-1] 8VLQJDZLUHKRRNJHQWOSXOOWKHIXHOILOWHURXWWKURXJKWKHIXHOILOWHURSHQLQJ [#28-2] *UDVSWKHIXHOKRVHQH[WWRWKHIXHOILOWHUILWWLQJDQGUHPRYHWKHILOWHUEXWGRQRWUHOHDVHWKH
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SPARK PLUG
MAINTENANCE INTERVAL · 7KHVSDUNSOXJVKRXOGEHUHPRYHGIURPWKHHQJLQHDQGFKHFNHGDIWHUHDFKKRXUVRI
operation. · 5HSODFHWKHVSDUNSOXJDIWHUHYHUKRXUVRIRSHUDWLRQ
SPARK PLUG MAINTENANCE [#28-3] 1. Twist the high tension lead boot on the spark plug back and forth a couple of times to
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ENGLISH

Bearing Lube 31
Gearcase

Grease Plug
Plug Hole

Attaching Shaft

Boss Adapter

GEARCASE

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GEARCASE LUBRICATION Remove the cutting attachment and the boss adapter. Clean any dirt and debris from the area between the boss adapter and the gearcase. Remove the grease plug from the side of the gearcase. While rotating the attaching shaft, inject lithium-base bearing lube 31WKURXJKWKHSOXJKROHXQWLOWKHJHDUFDVHLVIXOO5HLQVWDOOWKHERVVDGDSWHU and grease plug.

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31

ENGLISH

GENERAL CLEANING AND TIGHTENING
The Unisaw Brushcutter/Grass Trimmer will provide maximum performance for many, many hours if it is maintained properly. Good maintenance includes regular checking of all fasteners for correct tightness, and cleaning the entire machine.
WARNING
POTENTIAL HAZARD · When engine is running, attached tool and other parts are moving. WHAT CAN HAPPEN · Contact with moving tool or other moving parts could cause serious personal injury
or death. HOW TO AVOID THE HAZARD · Always turn off your Brushcutter/ Grass Trimmer before you clean or perform any
maintenance on it.

STORAGE
For long term storage of the Brushcutter/ Grass Trimmer: 1. Empty the fuel tank into a suitable fuel storage container. 5XQWKHHQJLQHWRUHPRYHDQIXHOWKDWPDUHPDLQLQWKHFDUEXUHWRU 3HUIRUPDOOUHJXODUPDLQWHQDQFHSURFHGXUHVDQGDQQHHGHGUHSDLUV 5HPRYHWKHVSDUNSOXJDQGVTXLUWDYHUVPDOODPRXQWRIHQJLQHRLOLQWRWKHFOLQGHU 3XOOWKHVWDUWHUJULSRQFH 6ORZOSXOOWKHVWDUWHUJULSWREULQJWKHSLVWRQWRWKHWRSRIWKHFOLQGHU7’& 5HLQVWDOOWKHVSDUNSOXJ 6 WRUHWKH%UXVKFXWWHU*UDVV7ULPPHULQDGUSODFHDZDIURPH[FHVVLYHKHDWVSDUNVRU
open flame.
CAUTION
POTENTIAL HAZARD · Oil may squirt out of the spark plug opening when you pull the starter grip. WHAT CAN HAPPEN · Oil can cause eye injuries. HOW TO AVOID THE HAZARD · Protect your eyes and keep your face away from the spark plug opening.

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ENGLISH

7528%/(6+227,1*

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Engine will not start

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· STOP switch set to off position · Empty fuel tank · Primer bulb wasn’t pushed enough · Engine flooded
3

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· Move switch to on position · Fill fuel tank · Press primer bulb until fuel flows through fuel return line · Use warm engine starting procedure
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Engine will not Idle

· Idle speed set incorrectly

· Set Idle speed

Engine lacks power or stalls when cutting

· Throttle wire has come loose · Dirty air filter

¶

· Tighten throttle wire · Clean or replace air filter

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ENGLISH

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WX21L

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Engine displacement, cm FP ¶FP

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Idling speed, min-1
-1

Recommended maximum engine speed, min-1
9-1

Speed of output axle, min-1 -1
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Electrode gap, mm
PP

Type of carburetor

Diaphragm

Fuel tank capacity, cm³
FPñ FPñ

Weight without fuel, cutting attachment and strap/ harness, kg NJ
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ENGLISH

63(&,),&$7,216

WX30

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Engine displacement, cm FP ¶FP
Idling speed, min-1 -1
Recommended maximum engine speed, min-1 9-1
Speed of output axle, min-1 -1
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Spark Plug

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Electrode gap, mm
PP

Type of carburetor

Fuel tank capacity, cm³

FPñ

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Weight without fuel, cutting attachment and strap/ harness, kg

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ENGLISH

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Trimmer head:

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WX27

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ENGLISH

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Brushcutter Blade:

Trimmer head:

WX42

WX50

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%UXVKFXWWHU%ODGHPHDVXUHGYLEUDWLRQHPLVVLRQYDOXHDhv,eqOHIWULJKWKDQGOHV Dhv,eq Dhv,eq Trimmer heaGPHDVXUHGYLEUDWLRQHPLVVLRQYDOXHDKYHTOHIWULJKWKDQGOHV Dhv,eq Dhv,eq

ENGLISH

ENGLISH

Original Instruction/

31*%588$

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