Ryobi RY64400 - Manual (Page 17)

13 - English
MAINTENANCE
TROUBLESHOOTING
PROBLEM CAUSE REMEDY
Engine fails to start. On/stop switch is in the off position.
No fuel in tank.
Spark plug shorted or fouled.
Spark plug is broken (cracked
porcelain or electrodes broken).
Ignition lead wire shorted, broken, or
disconnected from spark plug.
Ignition inoperative. Move switch to on.
Fill tank.
Replace spark plug.
Replace spark plug.
Replace lead wire or attach to spark
plug.
Contact authorized service center.
Engine hard to start. Water in gasoline or stale fuel mixture.
Obstructed fuel filter
Engine is under or over choked.
Weak spark at spark plug.
Drain entire system and refill with fresh
fuel.
Replace filter.
Adjust choke as necessary.
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.
 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.
 Unfold the handles into the upright position and secure by
tightening handlebar knobs. Do not allow throttle cable
to become pinched when raising the handlebar.
 Pull the starter cord three or four times to clean lubricant
from the combustion chamber.
 Remove spark plug from the cylinder. Wipe lubricant from
the spark plug and return it to the cylinder.
 Reconnect spark plug wire.
 Follow 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.