LawnMaster NPTGSP2617A Gas Grass Trimmer with Electric Start User Manual

LawnMaster NPTGSP2617A Gas Grass Trimmer with Electric Start

SPECIFICATIONS

UNIT SPECIFICATIONS

Fuel System

General

TORQUE SPECIFICATIONS

screws (M5X20) and then tighten the screws securing the cylinder to crankcase.| 53-62| 6-7
Spark plug to cylinder| Pre-screw the spark plug to the cylinder, and then tighten with a torque spanner.| 115-137| 13-15.5
Carburetor mount to cylinder| Apply a thermostable screw-thread glue onto the 2 screws (M5X20) and tighten the screws securing the carburetor mount to the cylinder.| 35-44| 4-5
Flywheel to crankshaft| Apply a thermostable screw-thread glue onto the crankshaft thread. Pre-screw the flange hexagon nut (M8) and then tighten.| 89-133| 10-15
---|---|---|---
Clutch to flywheel| Slide the corrugated washers onto the clutch bolts (M6X21.5). Apply a thermostable screw-thread glue onto the bolt thread head section. Install the bolts into the clutch and tighten the bolts securing the clutch to flywheel.| 71-89| 8-10
Ignition coil to cylinder| Put the 2 screws (M5X20) through the ignition coil and two spacers respectively. Apply a thermostable screw-thread glue into the cylinder holes and then pre- screw the 2 screws (M5X20). Insert a feeler gauge of 0.014 in. (0.35mm) between the flywheel and the ignition coil. Press down the ignition coil flush against the feeler gauge. Tighten the screws with a torque spanner securing the ignition coil. Remove the feeler gauge.| 27-35| 3-4
Muffler to crankcase| Put the 2 bolts (M5X50) through the muffler assembly. Apply a thermostable screw-thread glue onto the 2 bolts and secure the muffler to the crankcase using the torque wrench.| 62-71| 7-8
Apply a thermostable screw-thread glue onto the head section of 1 screw (M5X10). Pass the screw through the positioning hole on the muffler assembly holder and tighten the screw securing the muffler to crankcase.| 62-71| 7-8
Pawl assembly to crankshaft| Apply a thermostable screw-thread glue onto the crankshaft thread. Pre-screw the pawl assembly to crankshaft, and then tighten using the torque wrench.| 62-80| 7-9
Air filter base to carburetor| Pre-screw the nuts (M5) with washers, and then tighten using the pneumatic tool.| 27-35| 3-4
Fuel tank bracket to crankcase| Apply a thermostable screw-thread glue onto the screw (M5X10) and pass it through the hole on fuel tank bracket. Tighten the screw securing the fuel tank bracket to crankcase.| 27-35| 3-4
Fuel tank to crankcase| Apply a thermostable screw-thread glue onto the screw (M5X12). Pass it through the fuel tank hole. Tighten the screw securing the fuel tank to crankcase.| 27-35| 3-4
Cylinder pressure plate| Apply a thermostable screw-thread glue onto the screw (M5X10). Pass the screw through the cylinder pressure plate hole and then tighten it onto the cylinder.| 27-35| 3-4
Electric starter assembly to crankcase| Align the 2 screw holes on the electric starter assembly with the screw holes on crankcase. Tighten the 2 screws (M5X60) securing the electric starter assembly to crankcase.| 27-35| 3-4
Rear engine cover assembly| Tighten the 2 screws (ST3.9X30F) to secure the rear engine cover.| 12-13| 1.3-1.5
Flywheel cover to crankcase| Apply a thermostable screw-thread glue into the two holes on crankcase. Tighten the 2 screws (M5X15) securing the flywheel cover to crankcase.| 53-64| 6-7.2
---|---|---|---
Lower engine cover assembly| Place the lower engine cover onto crankcase. Tighten the 3 screws (1ST3.9X8, 2M5X10) securing the lower engine cover.| 10-12| 1.1-1.3 (for 1ST3.9X8)
27-35| 3-4 (for 2M5X10)
Upper engine cover assembly| Tighten the 3 screws (M5X35) securing the upper engine cover.| 27-35| 3-4
Spark plug cover to upper engine cover| Tighten the screw (M5X10) securing the spark plug cover to upper engine cover.| 27-35| 3-4
Lower engine cover to upper engine cover| Tighten the screw (ST3.9X12) to secure the upper and

lower engine covers (on muffler side).

| 10-12| 1.1-1.3
Right handle cover to left handle cover| Tighten the screws (ST3.9X16) to secure the right and left parts of the main handle.| 10-12| 1.1-1.3
Transmission yoke to flywheel cover| Apply a thermostable screw-thread glue into the four screw holes on flywheel cover. Tighten the screws (M5X20) securing the transmission yoke.| 53-62| 6-7
Transmission yoke assembly| Align the screw holes on the transmission yoke with the screw holes on upper shaft. Tighten the screws (M5X12 & M6X25) securing the transmission yoke to upper shaft.| 53-62| 6-7
Trimming line cutting blade assembly| Tighten the screws (ST3.9X16) with washers to secure the trimming line cutting blade to the debris guard.| 10-12| 1.1-1.3
Ratchet to electric starter assembly| Attach the ratchet to the electric starter lower cover. Apply a thermostable screw-thread glue onto the head section of the screw (M5X10) and tighten the screw (M5X10) securing the ratchet.| 27-35| 3-4
Electric starter motor assembly| Align the electric starter motor with the screw holes on the electric starter upper cover. Apply a thermostable screw- thread glue onto the head section of the screws (M3X8) and tighten the screw securing the electric motor.| 4-6| 0.5-0.7
Electric starter lower and upper covers assembly| Tighten the two screws (ST2.9X12F) securing the lower and upper covers of the electric starter.| 4-5| 0.4-0.6

GENERAL SAFETY RULES

SAFETY

To protect the eyes from loose objects that could be thrown from the trimmer, always wear eye protection with side shields marked to comply with ANSI Z87.1 when operating the trimmer.
Use only genuine manufacturer’s replacement parts for this product. Failure to do so may cause poor fit, poor function and possible injury.
Scarfs, neckties, jewellery, jackets or other loose clothing and accessories should be avoided as they can be caught on or become entangled in the trimmer. Secure hair so it is above shoulder level. To protect your legs and feet, long pants and closed toed shoes should be worn.
To improve your grip and protect your hands, wear heavy-duty non slip gloves.
The sound level exceeds 85 dB(A). To prevent hearing damage, always wear sound barriers (ear plugs or ear mufflers).

GENERAL TRIMMER SAFETY

Never operate the trimmer with a damaged guard or without the guard in place. Avoid getting into direct contact with the line.
Always remember to keep both hands on the control handles when the engine is running.
Do not operate the trimmer if there is a fuel leak as it is a fire hazard. The fuel leak must be fixed prior to operating the trimmer.
Empty the fuel tank before storing if the trimmer will not be used for a few days.
Make sure the control handles have not accumulated oil and fuel and are clean and dry.
See Operator’s Manual for additional safety precautions.

WORK AREA

Operate only in well ventilated areas.
Observe all safety regulations for the safe handling of fuel. Mix and handle fuel in a container approved for storing gasoline. Wipe the trimmer dry if fuel is spilled on it. Always move away from the fueling area before starting the engine.
Fuel the trimmer at least 10 ft. (3 m) from the place where you start the engine and operate the trimmer.

NOTE: The trimmer head will rotate during carburetor adjustment. Wear protective equipment and observe all safety instructions.

NPTGSP2617A EXPLODED VIEW

PARTS AND FEATURES

NPTGSP2617A PARTS LIST

Key Number| Application| Description| Quantity
1| 321001101| Cleva 26cc 2-Cycle Engine| 1
2| 321001102| Throttle-body & Starter Set| 1
2.1| 321001103| Throttle-body Set| 1
2.2| 321001104| Starter Set| 1
2.2.2| 321001106| Starter Switch Assembly| 1
2.2.3| 321001107| Stop Switch Set| 1
2.2.4| 321001108| PCB Assembly| 1
3| 321001109| Handle Spacer| 2
4| 141004102| Cable Clamp| 2
5| 321001111| Clutch Assembly| 1
5.1| 321005103| Screw| 4
6| 321001113| Wire Lock| 1
7| 321001114| 7.2V Lithium-Ion Battery| 1
8| 321005104| Aluminum Upper Trimmer Shaft| 1
9| 321001116| Assist Handle Assembly| 1
9.1| 321001117| Assist Handle| 1
9.2| 321001118| Handle Clasp| 1
9.3| 321001119| Ball Joint| 1
9.4| 321001120| Ball Socket| 1
10| 321002102| Shaft Connection Sleeve| 1
11| 321005105| Aluminum Lower Trimmer Shaft| 1
12| 321005106| Debris Guard Bracket| 1
13| 321001121| Gear Box| 1
13.1| 321005107| Screw| 1
13.2| 321001112| Bolt| 1
13.3| 321001122| Bolt| 1
14| 321001124| Cover Plate| 1
15| 321001125| Debris Guard| 1
16| 321001126| Rapid Reload Head Assembly| 1
16.1| 321001129| Rapid Reload Spool Spring| 1
17| 321001127| Charger| 1
18| 221003102| Shoulder Strap (Available Separately)| 1
19| 321001128| Shoulder Strap Clasp (Available Separately)| 1
20| 321004122| M5 Hexagon Socket Wrench| 1
21| 321004121| M6 Hexagon Socket Wrench| 1
22| 321004123| Open End Wrench| 1
23| 321004124| Socket Wrench| 1

EXPLODED VIEW 26CC 2-CYCLE ENGINE

WIRING DIAGRAM AND MANAGEMENT
– IGNITION AND STARTING 

Push-Start

GENERAL TROUBLESHOOTING

battery fully and insert it correctly.
The motor does not start, and the battery indicator LED flashes yellow.| The battery is overheated.| Allow the battery to cool to room temperature. Re- start the tool after about 30 minutes.
The motor does not start, and the battery indicator LED flashes green.| Possible short circuit in the electric motor or the motor drive lines.| Check if there is a short circuit in the electric motor or the motor drive lines referring to page 36.
The motor does not start, and the battery indicator LED flashes alternatively red and green.| The starting current is excessive – the engine or electric motor may be seized or cannot rotate smoothly.| Check if the engine or the electric motor is stuck and cannot rotate smoothly referring to page 36.
The motor does not start, and the battery indicator LED is continuously on.| There is an open circuit from the PCB output to the motor connecting line.| Check if there is an open circuit occurs from the PCB output to the motor connecting line referring to page 36.
The motor starts, but the engine does not start.| The starter drive system is broken.| Remove the electric starter. Replace the drive system.
If drive system of the starter is in good condition, the engine may be broken.
The engine does not start.| No spark or weak spark.| Clean or replace the spark plug. Reset the spark plug gap 0.026”±0.002” (0.65±0.05 mm).
Check the gap between ignition coil and flywheel. Make sure the gap is 0.012’’- 0.015’’ (0.30-0.40mm).
The air filter is blocked.| Clean the air filter.
The fuel tank valve is blocked.| Remove the blockage or replace.
Incorrect lubricant/fuel.| Use correct lubricant/fuel.
The fuel tube is blocked or broken.| Clean or replace.
Incorrect carburetor adjustment.| Re-adjust the carburetor.
The carburetor is blocked.| Remove the blockage.
Excessive oil in carburetor.| Tighten the carburetor nut or replace the carburetor washer.
The engine stops during operation.| No fuel.| Add fuel to the fuel tank.
---|---|---
The fuel tube is blocked.| Remove the blockage.
The carburetor nut loosens and has air leakage.| Tighten the carburetor nut or replace the carburetor washer.
No spark or weak spark.| Clean or replace the spark plug. Reset the spark plug gap.
Check the gap between ignition coil and flywheel. Make sure the gap is 0.012’’- 0.015’’ (0.30-0.40mm).
Abnormal engine compression.| Check if the piston ring sinters and the piston and piston ring wear status. Check the carbon deposit status in combustor. Check the wear status inside cylinder.
Check if the spark plug loosens. Check the gap between ignition coil and flywheel. Make sure the gap is 0.012’’-0.015’’ (0.30- 0.40mm).
The engine is flooded.| Remove the spark plug. Clip the fuel tube for fuel entering. Press the start button to remove the fuel inside the cylinder.
The engine has less power.| The choke lever is closed.| Open the choke lever.
The air filter is blocked.| Clean the air filter.
The fuel filter is blocked.| Remove the blockage or replace.
Incorrect lubricant/fuel.| Use correct lubricant/fuel.
Incorrect carburetor adjustment.| Re-adjust the carburetor.
Carburetor washer hardens.| Replace.
The main nozzle of the carburetor is blocked.| Clean or replace the carburetor if necessary.
The spark plug is worn out.| Replace with new spark plug.
The carburetor has air leakage.| Tighten the carburetor.
The fuel has been contaminated with water.| Empty tank and replace with clean fuel.
Muffler has carbon deposit.| Remove the carbon deposit.
Exhaust port has carbon deposit.| Remove the carbon deposit.
Piston ring sinters.| Clean the ring groove or replace the piston ring.
Cylinder worn.| Replace the cylinder.
Piston and piston ring are worn out.| Replace.
No spark.| Spark plug electrode is wet.| Dry the spark plug.
---|---|---
Spark plug has carbon deposit.| Remove the carbon deposit.
Spark plug insulation is broken.| Replace the spark plug.
Spark plug gap is too big/ small.| Adjust to 0.026”±0.002” (0.65±0.05 mm).
Spark plug electrode is burnt out.| Replace the spark plug.
High voltage line of the ignition coil is broken.| Replace the high voltage line.
Ignition coil is broken or burnt out.| Replace the ignition coil.
Poor contact of the high voltage line and the jump ring.| Amend.
Spark plug cap is broken.| Replace.
Engine will not start but spark plug fires.| Excess fuel inside spark plug.| Remove the spark plug. Clip the fuel tube for fuel entering. Press the start button to remove the fuel inside the cylinder.
Fuel is not clean, with water.| Replace the fuel.
Cylinder and piston ring wear.| Replace.
The spark plug loosens.| Tighten.
Crankcase has air leakage.| Replace the gasket.
Cylinder has air leakage.| Replace the gasket.
No fuel.| Add fuel.
No fuel in primer bulb.| Prime the bulb.
Engine is not choked.| Engage the choke.
Fuel tank valve is blocked.| Remove the blockage.
The engine cannot be stopped.| The switch wire does not connect.| Connect the wire.
The switch is broken.| Replace.
The clutch engages during idle speed.| Clutch is damaged.| Replace.
The free length of the clutch spring is too long.| Replace.
Clutch is off center.| Replace.
No load speed is not stable/consistent.| Incorrect carburetor adjustment.| Re- adjust the carburetor.
---|---|---
The carburetor has an air leakage.| Replace or re-tighten.
Fuel tube is broken.| Replace.
Crankcase washer has air leakage.| Replace.
Fuel seal has air leakage.| Replace.
After releasing the throttle lever, the trimmer head continues to rotate.| Idle speed is too high.| Adjust the engine.
Clutch spring is broken.| Replace.
Clutch friction plate is broken.| Replace.
The engine accelerates, but the trimmer head does not rotate.| The axle rotating spline or the transmission yoke spline is worn out.| Replace.
Irregular vibration.| The trimmer head is not balanced.| Repair or replace.
The drive shaft is bent.| Replace.
Worn bearings.| Replace.
Clutch is off center.| Replace.

Engine Compression (See Figs. 1-3)

Low compression will cause erratic idling, low power, and hard starting when hot. To test the engine compression:

• Remove the spark plug cover using the provided hex wrench (Fig. 1).

• Remove the spark plug cap. Fully cover the spark plug using the provided socket wrench. Rotate the wrench counter-clockwise to remove the spark plug (Fig. 2).
  

• Rotate a compression gauge into the spark plug hole (Fig. 3).
  Place the choke lever in the RUN position. Engage the throttle safety and throttle trigger together to open the throttle and the choke lever in the on position. Lift the start button cover and press the start button 3-5 times until the gauge needle reaches its peak (stops moving). Engine compression should be >0.6MPa.
  

Ignition System (See Figs. 4-9)

• Remove the upper engine cover by removing the 4 screws with the provided hex wrench and screwdriver (Fig. 4 – 6)
  

• Remove the spark plug cover. Remove the spark plug cap and the spark plug. Check and remove the carbon deposit in the spark plug. The spark plug gap should be 0.65±0.05mm. Inspect the electrodes for wear and deposits (Fig. 7).

• Install the spark plug into the spark plug cap. Contact the negative electrode to the aluminum part (Fig. 8).

• Press the start button to check if the spark plug sparks.

• Check the gap between the rotor and the ignition coil. Make sure the gap is between 0.012 and 0.015 in. (0.30-0.40 mm) as instructed in step 3 of the Ignition Coil Replacement section (Fig. 9).
  

Ignition Coil Replacement (See Figs. 10-11)

• Remove the upper engine cover.

• Remove the spark plug cover and the spark plug cap. Remove the 2 screws. Remove the ignition coil and the washers (Fig. 10 – 11).
  

• Replace with a new ignition coil.

• To adjust the gap between the rotor and the ignition coil, first insert a feeler gauge of 0.014 in. (0.35mm) between the rotor and the ignition coil, then rotate the rotor and align the magnetic pole of the rotor with the ignition coil. Press down the ignition coil flush against the feeler gauge. Tighten the screws to fix the ignition coil. Rotate the rotor counter-clockwise to remove the feeler gauge. Recheck to ensure the gap is 0.012-0.015 in. (0.30-0.40 mm) (Fig. 9).

Clutch Replacement (See Figs. 12-18)

• Remove the 4 screws to remove the transmission yoke (Fig. 12 & 13).
  

• Remove the upper engine cover.

• Unscrew the bolts on the clutch assembly using an impact driver or wrench (Fig. 14).

• Remove the 2 bolts and corrugated washers. Then remove the clutch and flat washers (Fig. 15).
  

• Replace with a new clutch.

• Slide the corrugated washers onto the bolts. Then install the bolts together with the corrugated washers into the clutch, with the side of the clutch marked with the direction of rotation facing upwards (Fig. 16).
  

• Turn the clutch upside down and slide the flat washers onto the bolts. Apply the thread-locking glue for 3-5 screw threads and then re-install the clutch (Fig. 17 & 18).
  

Flywheel (Rotor) Replacement (See Figs. 19-22)

• Remove the clutch.

• Remove the nut using an impact driver (Fig. 19).

• Remove the 2 screws to remove the flywheel cover (Fig. 20).
  

• The flywheel can be removed by a puller (Fig. 21). Choose an appropriate puller to remove the flywheel. Before using the puller, rotate screw rod 1 counter-clockwise till it is 1/4 to 1/2 its length through. Ensure screw rods 2 and 3 are protruded longer than screw rod 1 . Rotate screw rods 2 and 3 clockwise into the corresponding threaded holes as shown in Fig. 21. Make sure screw rods 2 and 3 are level and in same length. Then use a spanner to rotate screw rod 1 clockwise until the flywheel is removed. Rotate screw rods 1 , 2 and 3 counter-clockwise to remove the puller from the flywheel.
  

• Check the woodruff key is in good condition and installed into place. Examine it for signs of damage.
  Check if the rotor magnets meet the requirements. Check that the fins are in good condition.
  Replace with a new flywheel if necessary (Fig. 22).
  

Read all safety rules and instructions carefully before servicing this tool.
601 Regent Park Court Greenville, SC 29607, 1-866-384-8432

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