MAINTENANCE

While holding a wrench on the flats of the adjusting nut with one hand, loosen the retaining nut with a second wrench as shown. Take care not to loosen the stud.

Rotate the adjusting nut until it touches the feeler gauge. Once the gap setting is correct, hold the wrench on the flats of the adjusting nut and re- tighten the retaining nut securely.

Adjust the second rocker arm, if necessary.

Replace the rocker arm cover and screw; tighten securely.

Replace the top engine cover and screw; tighten securely.

WARNING:

Ensure all engine cover and all engine parts are com- pletely and properly reassembled before starting engine. Failure to correctly reassemble engine may result in seri- ous injury or property damage.

PREPARING FOR USE AFTER STORAGE

The following steps should be taken before using the cultiva- tor after it has been stored.

nUnfold the handles into the upright position and secure by tightening handlebar knobs. Do not allow throttle cable to become pinched when raising the handlebar.

nPull the starter cord three or four times to clean lubricant from the combustion chamber.

nRemove spark plug from the cylinder. Wipe lubricant from the spark plug and return it to the cylinder.

nReconnect spark plug wire.

nFollow the steps on pages 8-9 to refuel and restart the cultivator.

HIGH ALTITUDE ENGINE OPERATION

Please have an authorized service center adjust this engine if it is to be run above 2000 feet. Failure to do so may result in poor engine performance, spark plug fouling, hard start- ing, and increased emissions. Carburetor adjustment by an authorized service center will improve performance and allow that this engine meets EPA (Environmental Protection Agency) and California ARB (Air Resources Board) emis- sion standards. An engine adjusted for high altitudes can not be run at 2000 feet or lower. In doing so, the engine will overheat and cause serious engine damage. Please have an authorized service center restore high altitude modified engines to the original factory specification before operating below 2000 feet.

TROUBLESHOOTING

PROBLEM

 

CAUSE

REMEDY

Engine fails to start.

On/stop switch is in the off position.

Move switch to on.

 

No fuel in tank.

Fill tank.

 

Spark plug shorted or fouled.

Replace spark plug.

 

Spark plug is broken (cracked

Replace spark plug.

 

porcelain­

or electrodes broken).

 

 

Ignition lead wire shorted, broken, or

Replace lead wire or attach to spark

 

disconnected from spark plug.

plug.

 

Ignition inoperative.

Contact authorized service center.

 

 

 

Engine hard to start.

Water in gasoline or stale fuel mixture.

Drain entire system and refill with fresh

 

 

 

fuel.

 

Obstructed fuel filter

Replace filter.

 

Engine is under or over choked.

Adjust choke as necessary.

 

Weak spark at spark plug.

Contact authorized service center.

Engine lacks power.

Air filter clogged.

Clean or replace air filter.

 

 

 

Engine emits too much smoke

Too much oil in crankcase.

Drain lubricant and refill with correct

 

 

 

amount of 20W-30 engine lubricant. See

 

 

 

Adding/Checking Engine Lubricant

 

 

 

in the Operation section of this manual.

 

 

 

 

13 - English

Page 17
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Ryobi RY64400 Troubleshooting, Preparing for USE After Storage, High Altitude Engine Operation, Problem Cause Remedy

RY64400 specifications

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