NAKAYAMA PRO MB2510 Garden Gasoline Tiller User Manual

MB2510 033080
v2.1
WWW.NAKAYAMATOOLS.COM

SAFETY

Owner’s Responsibility
Accurate assembly and safe and effective use of the mini cultivator is the owner’s responsibility.

• Read and follow all safety instructions.
• Carefully follow all assembly instructions.
• Maintain the mini cultivator according to directions and schedule included in this Operator’s Manual.
• Ensure that anyone who uses the mini cultivator is familiar with all controls and safety precautions.

Special Messages
Your manual contains special messages to bring attention to potential safety concerns, machine damage as well as helpful operating and servicing information. Please read all the information carefully to avoid injury and machine damage.

CAUTION
Avoid injury! This symbol and text highlight potential hazards or death to the operator or bystanders that may occur if the hazards or procedures are ignored.

Avoid damage! This text is used to tell the operator of actions or conditions that might result in damage to the machine.

NOTE: General information is given throughout the manual that may help the operator in the operation or service of the machine.

WARNING
CALIFORNIA PROPOSITION 65 WARNING
Engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Important Safety Precautions
Please read this section carefully. Operate the mini cultivator according to the safety instructions and recommendations outlined here and inserted throughout the text. Anyone who uses this mini cultivator must read the instructions and be familiar with the controls.

This symbol points out important safety instructions which if not followed could endanger your personal safety. Read and follow all instructions in this manual before attempting to operate this equipment.

• Do not transport the mini cultivator from one place to another with the engine running.
• The tines of the cultivator should not rotate when the engine is idling. If it does rotate when engine is idling, contact Ardisam, Inc. for instructions.
• Dress appropriately when operating the cultivator. Always wear sturdy footwear. Never wear sandals, sneakers, or open shoes, and never operate the cultivator with bare feet. Do not wear loose clothing that might get caught in moving parts. Always wear safety glasses for eye protection.
• Always keep hands, feet, hair, and loose clothing away from any moving parts on engine and cultivator.
• Do not allow children to operate this mini cultivator. Do not allow adults to operate the mini cultivator without proper instruction.
• Donot operate any power equipment under the influence of alcohol or drugs.
• Keep all screws, nuts, and bolts tight.
• Engine should be turned off and cool, spark plug wire must be removed from spark plug before any repairs or adjustments are attempted.
• Temperature of muffler and nearby areas may exceed 150° F (65° C). Avoid these areas.
• Never run engine indoors or in an enclosed area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.
• Carefully inspect the area to be cultivated, and remove all foreign objects. Do not cultivate above underground utilities, including water lines, gas lines, electric cables, or pipes. Do not operate the mini cultivator in soil with large rocks and foreign objects which can damage the equipment.
• If an object becomes lodged in the tines, turn engine off, remove the wire from the spark plug, and secure, allow to cool before attempting to remove the foreign object.

Engine Safety Precautions

Warning Carbon Monoxide Poisoning
All engines contain carbon monoxide in their exhaust. Carbon monoxide is a deadly, colorless, tasteless, odorless gas which may be present even if you do not smell or see any engine exhaust. Levels of carbon monoxide, which can be deadly, can be present for days in an enclosed area that has poor ventilation. Any level of carbon monoxide, if inhaled, can cause headaches, drowsiness, nausea, dizziness, confusion, and eventually death. If you experience any of these symptoms, seek fresh air and medical attention immediately.

Preventing Carbon Monoxide Poisoning

• Never run engine indoors.
• Never try to ventilate engine exhaust indoors. Carbon monoxide can reach dangerous levels very quickly.
• Never run engine outdoors where exhaust fumes may be pulled into a building.
• Never run engine outdoors in a poorly ventilated area where the exhaust fumes may be trapped and not easily taken away. (Examples include: in a large hole or areas where hills surround your working area.)
• Never run engine in an enclosed or partially enclosed area. (Examples include: buildings that are enclosed on one or more sides, under tents, car ports, or basements.)
• Always run the engine with the exhaust and muffler pointed in the direction away from the operator.
• Never point the exhaust muffler towards anyone. People should always be many feet away from the operation of the engine and its attachments.

Gasoline Fires and Handling Fuel Safely
Fuel and fuel vapors are highly flammable. Never use fuel where a spark or flame may be present. Never use fuel where a potential source of ignition could occur. (Examples include: hot water or space heaters, clothes dryer, electric motors, etc.) Keep flames and sparks away from engine and fuel to prevent fires. Fuel fires spread very quickly and are highly explosive.

Prevention of Gasoline Fires

• Never fill your fuel tank with fuel indoors. (Examples include: basement, garage, barn, shed, house, porch, etc.)
• Always fill fuel tank outside in a well-ventilated area.
• Never remove the fuel cap or add fuel with the engine running. Stop engine and allow to cool before filling.
• Never drain fuel from engine in an enclosed area.
• Always wipe up excess (spilled) fuel from engine before starting. Clean up spilled fuel immediately.
• Allow spilled fuel to dry, after wiping and before starting.
• Allow fuel fumes/vapors to escape from the area before starting engine.
• Test the fuel cap for proper installation before starting and using engine.
• Always run the engine with fuel cap properly installed on the engine.
• Always unscrew gas cap vent screw while engine is running.
• Never smoke while refilling engine fuel tank.
• Prevent fire and explosion caused by static electric discharge. Use only nonmetal, portable fuel containers approved by the Underwriter’s  Laboratory (U.L.) or the American Society for Testing & Materials (ASTM).
• Do not store engine with fuel in fuel tank indoors. Fuel and fuel vapors are highly explosive.
• During storage, screw down gas cap vent screw tightly.
• Never pour fuel from engine fuel tank.
• Never siphon fuel by mouth to drain fuel tank.
• Always have an adult fill the fuel tank.
• Never allow an adult or anyone under the influence of drugs or alcohol to fill engine.
• Never allow children to fill the engine.
• The clutch will transfer maximum power after about two hours of normal operation. During this break-in period clutch slippage may occur. The clutch should be kept free of oil or other moisture for efficient operation.

Burns and Fires
The muffler, muffler guard and other parts of the engine become extremely hot during the operation of the engine. These parts remain extremely hot after the engine has stopped.

Prevention of Burns and Fires

• Never remove the muffler guard from the engine.
• Never touch the muffler guard because it is extremely hot and will cause severe burns.
• Never touch parts of the engine that become hot after operation.
• Always keep materials and debris away from muffler guard and other hot parts of the engine to avoid fires.

SAFETY AND SAFETY RULES

CAUTION
Avoid injury! Hot gases are a normal by-product of a functioning catalytic converter. Follow all safety instructions to prevent burns and fires.

Steps for Working on Engine or Mini Cultivator

CAUTION
Do Not Alter/Modify Engine or Mini Cultivator: Avoid injury! Never alter or modify the engine from the factory. Serious injury or death may occur if
engine is modified or altered.

CAUTION
Avoid injury! When working on or replacing parts for the engine or mini cultivator you must always disconnect spark plug wire from the spark plug and keep it away from the spark plug.

1. Turn off engine switch.

2. Disconnect the spark plug wire from the spark plug.

3. Securely place the disconnected spark plug wire away from the spark plug and any metal parts. This must always be done or arcing may occur between spark plug wire and metal parts.

4. Replace or repair the part on the engine or mini cultivator.

5. Check all parts that were repaired, or removed during repair, that they are secure and fit correctly.
   NOTE: All repair parts must come from the factory. Never replace parts that are not specifically designed for the engine or mini cultivator.

6. Replace spark plug wire.

SAFETY DECAL

This mini cultivator has been designed and manufactured to provide you with the safety and reliability you would expect from an industry leader in outdoor power equipment manufacturing.

Reading this manual and the safety instructions it contains will provide you with the necessary basic knowledge to operated this equipment safely and effectively. We have placed a safety decal on the cultivator to remind you of some of this important information while you are operating the unit.

This important safety decal is illustrated below, and is shown here to help familiarize you with the location and content of the safety messages you will see as you perform normal cultivating operations. Please review this decal now, and if you have any questions regarding its meaning or how to comply with these instructions, reread the complete safety instruction text in this manual, or contact your local dealer.

Should this decal become unreadable because of being worn, faded, or otherwise damaged during the use of your mini cultivator, please use the part number information provided to order a replacement label from your local authorized dealer. These decals are easily applied, and will act as a constant visual reminder to you, and others who may use the equipment, to follow the safety instructions necessary for safe, effective operation of your mini cultivator.

UNPACK MINI CULTIVATOR

UNPACK MINI CULTIVATOR

1. Carefully lift the mini cultivator out of the box, remove any packing material and cut any ties holding the handlebar pieces to the mini cultivator assembly.

ASSEMBLY

1. Stand the mini cultivator assembly upright with tines and wheels on a level surface. Wheels should be set in the lowest position DO NOT place the mini cultivator ona high surface where it can fall and cause property damage or personal injury.
2. Attach the lower bar ,please put the bar ok and put the bolts (46141) the nuts() assemble the lower handlebar see figture 1.
3. Using two tee handle nuts (4640), two bolts (4642), assemble the middle handlebar (4693) to the lower handlebar (4695) that is already attached to the mini cultivator assembly. See Figure 1. The middle handlebar can be installed in two positions one high and one low. DO NOT overtighten the tee handle nuts.
4. Before assambling the uper handle ,please put the lever (4659) first and then Attach the upper right and left handlebars (4689 & 4690) to the middle handlebar using the two remaining tee handle nuts, bolts, and curved washers. See Figure 1. DO NOT overtighten the tee handle nuts.

Preparing Engine for Starting
GAS AND OIL
Quality
To operate the engine you must use a high quality 2-cycle oil to ensure that the engine operates correctly throughout the life of the engine. Use unleaded regular, unleaded premium or reformulated automotive fuels only. It may contain up to 10% ethanol, 10% gasohol, 15% MTBE, and 15% ETBE. DO NOT use Methanol or leaded fuels.

Mixture
Run mini cultivator with a 40:1 ratio. DO NOT use marine 2-cycle oil. See chart 1.

Mixing Fuel and Filling Fuel Tank
CAUTION
Avoid injury! Never store engine with fuel in the tank indoors. Fuel and fuel vapors are highly flammable.

CAUTION
Avoid injury! Never mix fuel and oil directly in engine fuel tank. Use only nonmetal, portable fuel containers approved by the Underwriter’s Laboratory (U.L.) or the American Society for Testing & Materials (ASTM).

CAUTION
Avoid injury! An adult must always handle and fill the engine with fuel.

Mixing Fuel

1. Fuel must be mixed in a container outside in a well ventilated area.
2. Fill certified fuel container 1/4 full of recommended fuel.
3. Add recommended amount of 2-cycle oil. DO NOT use 2-cycle marine oil.
4. Screw container cap on straight and tight.
5. Shake the container to mix fuel and oil.
6. Unscrew cap slowly to vent. Add the remainder of fuel requirements.
7. Wipe away any spilled fuel or oil and allow to evaporate before moving or transporting.

**CAUTION**

Avoid injury! Always handle gas in a well ventilated area, outdoors, away from flames or sparks.

This engine uses a gas/oil mixture. DO NOT run on straight gas only, engine damage will result.

Filling Fuel Tank

1. Shut-off engine and allow engine to completely cool before refilling the fuel tank.
2. Move to a well-ventilated area, outdoors, away from flames and sparks.
3. Clean debris from area around the fuel cap.
4. Loosen fuel cap slowly. Place the cap on a clean, dry surface.
5. Carefully add fuel without spilling.
6. Do not fill gas tank completely full, allow space for fuel to expand.
7. Immediately replace fuel cap and tighten. Wipe off spilled fuel and allow to dry before starting engine.

CAUTION
Avoid injury! DO NOT start engine if fuel is spilled. Wipe off excess fuel and allow to dry. Remove engine from area to avoid sparks.

Starting and Stopping Engine

1. Move engine to a well ventilated area, outdoors, to prevent carbon monoxide poisoning.

2. Move to an area away from flames or sparks, to avoid ignition of vapors if present.

3. Remove all debris from air cleaner holes and fuel cap to ensure proper air flow.

4. Turn switch to the ON position.

5. Priming:
   • When using the primer bulb, allow the bulb to return completely to its original position between pushes.
   • Choke must be in the OFF or RUN position when pushing or using the primer bulb.
   First Start: Starting new engine for first time or after running out of gas, prime 3 times.
   Cold Start: Starting engine after it has been sitting or stored briefly with fuel in the tank, prime 1 time above 55° Fahrenheit or 2 times below 55° Fahrenheit.
   Warm Start: Do not use primer or full choke if engine did not run out of gas or has not cooled completely. Flooding of engine will occur.

6. Choke:
   • Full choke position is defined by moving the choke lever as far to the ON or CHOKE position as possible. Half choke is defined when the choke lever is between ON or CHOKE and OFF or RUN..
   Warm Start: No choke or half choke is needed.
   CAUTION
   Avoid injury! Starter rope can cause an unanticipated jerk towards engine. Please follow instructions to avoid injury.

7. For Manual Start – Grasp starter handle and pull out slowly until it pulls slightly harder. Without letting it retract, pull rope with a rapid full-arm stroke. Let it return to its original position very slowly. Repeat this step every time the starter rope is pulled.

8. Pull recoil until engine fires or runs. NOTE: If engine fails to start after 5-6 pulls, push primer 1 time and pull starter rope again.

9. After engine starts running, move choke lever to HALF CHOKE.

CAUTION
Avoid injury! If engine fails to start after the above operations, please contact the local dealer.
DO NOT attempt to start engine in the following ways:

• DO NOT use starting fluid.
• DO NOT spray flammable liquids or vapors into air cleaner, carburetor, or spark plug chamber.
• DO NOT remove spark plug and attempt to start engine. Flammable fuel can spray out & ignite from a spark from spark plug.

CAUTION
Avoid injury! Never leave engine running while unattended. Turn off after every use.

CAUTION
Avoid injury! Never carry mini cultivator from one location to another while engine is running.

Normal Operation

1. The clutch will transfer maximum power after about two hours of normal operation. During this break-in period clutch slippage may occur. The clutch should be kept free of oil and other moisture for efficient operation.
2. Cultivate without placing excessive body weight on the unit. The mini cultivator operates most efficiently with the weight of the unit itself.
3. Neverrun engine indoors. Exhaust fumes are deadly.

Using the Screw Type, Manual Venting Gas Cap
Your mini cultivator is equipped with a screw type, manual venting gas Cap.

1. Before starting the engine, turn the screw in the top of the gas cap 2-3 turns (counterclockwise) to its venting position. DO NOT turn the screw to the point that it stops (4-5 turns counterclockwise). To ensure that gas will not spill during use, check that the gas cap is screwed on tightly and the gas cap screw is in the venting position.
2. After using the mini cultivator and before putting away or transporting it in a vehicle, screw the gas cap screw and gas cap on (clockwise) tightly. This will prevent gas from leaking during storage. The gas cap will not leak during storage if gas cap is tight and the screw at the top is tight.

MAINTENANCE AND STORAGE

CAUTION
To prevent accidental starting:
Avoid injury! Engine must be turned off and cool, and spark plug wire must be removed from spark plug before checking and adjusting engine or equipment.
CAUTION
Avoid injury! Temperature of muffler and nearby areas may exceed 150° F (65° C). Avoid these areas.
CAUTION
Avoid injury! Check mini cultivator often for loose nuts and bolts. Keep these items tightened.

Mini Cultivator Maintenance

1. The transmission case has 1.5 oz. or (3 tbsp.) of grease installed at the factory. It is recommended that once a year the transmission case be split and the grease level checked. A high quality lithium grease is recommended, which can be purchased at most automotive and hardware stores. DO NOT overfill.
2. Keep all screws, nuts, and bolts tight.
3. Forcold weather operation, store the unit in a cool environment. Transferring the unit from a warm to a cold place can cause the build up of harmful condensation.

Engine Maintenance

CAUTION
Avoid injury! Never store engine with fuel in the tank inside a building. Potential sparks may be present for ignition of fuel and fuel vapors.
CAUTION
Avoid injury! An adult must always do maintenance and repair on engine and mini cultivator.
CAUTION
Avoid injury! Engine must be shut off, cool, and spark plug wire removed before any repair or maintenance can be done.

Cooling Fins

• Cooling fins, air inlets and linkages must be free from any debris before each use.

Air Filters

• Never run engine without air cleaner properly installed. Added wear and engine failure may occur if air cleaner is not installed on engine.
• Service air cleaner every 3 months of operation. Clean and oil filter daily in extremely dusty conditions.

Steps for Cleaning Air Filters

Never twist air filters when cleaning. Always press.

1. Wash in warm water with mild soap until dirt and debris are removed. Press filter wnen washing, do not twist.
2. Rinse in warm water until soap and dirt are removed.
3. Dry filter by wrapping in a clean cloth and pressing filter until it is dry.
4. Apply oil to the entire filter.
5. Remove excess oil by squeezing filter.
6. Attach the filter and filter cover to the engine.

Spark Plug

• Check spark plug at the beginning of each season.

1. Remove dirt and debris around the spark plug before removing.
2. Remove spark plug and replace if any of the following have occurred: pitted electrodes, burned electrodes, cracked porcelain, or deposits around the electrodes.
3. Check spark plug for proper gap (.025” to .030”).
4. After analysis of the spark plug, install original or anew spark plug and tighten securely.
   NOTE: DO NOT OVERTIGHTEN!
   NOTE: SPARK PLUG IS L7TC.

Carburetor

• Never tamper with factory setting of the carburetor.

Tine Removal and Installation
To Remove Tines

1. Remove the cotter pins from each end of the tine shaft.
2. Slide the four tines off the shaft.

To Install Tines

1. First slide the inside tines onto each end of the tine shaft. One inside tine is stamped with a “B” and the other is stamped with a “C”.
2. Slide the outside tine “A” and tine “D” onto each end of the shaft next. The tines should be installed in the correct order so that they are ositioned left to right A, B, C, D, as viewed from the user’s position on the mini cultivator. Make sure that the hub collars on both the right and left pairs of tines face each other so that there is adequate spacing between the tine blades. See Figure 3.
3. Insert the cotter pins into the holes at each end of the tine shaft to lock the tines into place.

Adjusting Wheels and Drag Stake
The wheels on the mini cultivator can be adjusted to one of three positions. The lowest wheel position is used for transporting the mini cultivator across a smooth level surface while the engine is not running. The two higher positions are used when cultivating in soil and help stabilize the unit when cultivating at different depths. See Figure 6.
To adjust wheels up or down, see Figures 4 and 5.

1. Pull the locking metal sleeve against the spring until it releases from one of the three holes in the vertical guide.
2. Slide the wheel set up or down to the desired position, and release the locking metal sleeve until it locks into one of the three holes in the vertical guide.
   The drag stake is used to help regulate cultivating depth and control the mini cultivator from leaping forward during operation. Resistance to forward motion is greatest when the drag stake is set in its lowest position allowing for deeper cultivation.

To adjust the drag stake, see Figure 4.

1. Pull the pin out of the drag stake mount hole.
2. Position the drag stake so the pointed tip is directed downward.
3. Insert the pin into the hole that achieves desired depth.

STORAGE

Transporting Your Mini Cultivator

1. Never transport engine inside an enclosed space or vehicle. Fuel or fuel vapors may ignite causing serious injury or death.
2. If fuel is present in the fuel tank, transport in an open vehicle in an upright position.
3. If an enclosed vehicle must be used, remove gas into an approved red gasoline container. DO NOT siphon by mouth.
4. Run engine to use up the fuel in the carburetor and fuel tank. Always run engine in a well-ventilated area.
5. Wipe away any spilled fuel from engine and mini cultivator. Allow to dry.
6. Gas cap and gas cap vent screw should be turned down tightly before transporting mini cultivator in a vehicle.

Technical Data

Displacement| 52cc
Horse Power| 2.2Hp
Working Width| 30cm

Long Term Storage

• If your mini cultivator will not be used for more than one month, prepare it for long term storage.

Steps for Long-Term Storage

1. Add fuel stabilizer according to manufacturer’s instructions.

2. Runengine for 10-15 minutes to ensure that the stabilizer reaches the carburetor.

3. Remove the remainder of the fuel from the gas tank into an approved fuel container.
   CAUTION
   Avoid injury! To avoid injury or death, never siphon fuel by mouth.
   CAUTION
   Avoid injury! Never store mini cultivator with fuel in the fuel tank inside an enclosed area or building.

4. Store mini cultivator in a upright position.

5. Remove all debris from cultivator tines and engine.

SERVICE, TROUBLESHOOTING AND REPAIR

SERVICE INFORMATION
In the event that you experience trouble operating your mini cultivator, begin by following the suggestions in the troubleshooting guide in this section.
The guide will help you pinpoint the causes of common problems and identify remedies.
For more complicated repairs, you may want to rely on your retailer, an authorized mechanic or Ardisam, Inc. (contact your retailer for a list of authorized mechanics in your area). A parts catalog is included in this section.

ORDERING REPAIR PARTS
Parts can be obtained from the store where your mini cultivator was purchased or direct from the factory.
Please include the following information with your order:

1. Part numbers
2. Part description
3. Quantity
4. Model number and serial number

CAUTION
Practice safety at all times. Engine must be turned off and allowed to cool, and spark plug wire must be disconnected before attempting any aintenance or repair.

TROUBLESHOOTING

2. Spark plug wire disconnected
3. Battery not connected or low charge| 1. Flip switch to ON position
2. Connect spark plug wire to spark plug
3. Connect or charge battery
Engine runs rough, floods during operation| 1. Dirty air cleaner
2. Choke partially engaged
3. Carburetor out of adjustment| 1. Clean or replace air cleaner
2. Turn off choke
3. Call factory
Engine is hard to start| 1. Stale fuel
2. Spark plug wire loose
3. Dirty carburetor| 1. Drain old fuel and replace with fresh.
Use gas stabilizer at end of season
2. Make sure spark wire is securely attached to spark plug
3. Clean carburetor, use gas stabilizer, new gas can
Engine misses or lacks power| 1. Clogged fuel tank
2. Clogged air cleaner
a Improper carburetor adjustment
4. Spark plug dirty, improper gap, or wrong type| 1. Remove and clean
2. Clean or replace
3. Call factory
4. Replace spark plug and adjust gap
Tines turn at idle| 1. Idle speed too high
2.Broken clutch spring| 1. Adjust idle speed lower
2. Replace spring
Engine runs, then quits| 1. Gas cap not venting| 1. Make sure gas cap vent screw is in venting position
Engine revs too high| 1. Low fuel in tank| 1. Add fuel to tank

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References

• NAKAYAMATOOLS – Garden tools

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