Idle Speed Adjustment; Spark Plug Replacement - Ryobi RY39500 Manuel D'utilisation

The fuel cap contains a non-serviceable filter and a check
valve. A clogged fuel filter will cause poor engine performance.
If performance improves when the fuel cap is loosened,
check valve may be faulty or filter clogged. Replace fuel
cap if required.

IDLE SPEED ADJUSTMENT

See Figure 11.
WARNING:
The blade/cutting head will move when adjusting the
idle speed. Wear all protective clothing and keep all
bystanders, children, and pets at least 50 ft. away. Make
adjustments with the unit supported by hand so that the
blade/cutting head does not contact the ground or any
object. Keep all parts of your body away from the blade/
cutting head and muffler. Failure to follow these instruc-
tions could result in serious personal injury.
If the blades move at idle, the idle speed screw needs adjust-
ing on the engine. Turn the idle speed screw counterclockwise
to reduce the idle RPM and stop the blade movement. If the
blades still move at idle speed, contact a service dealer for
adjustment and discontinue use until the repair is made.
WARNING:
The blades should never move at idle. Turn the idle speed
screw counterclockwise to reduce the idle RPM and stop
the blades, or contact a service dealer for adjustment and
discontinue use until the repair is made. Serious personal
injury may result from the blades turning at idle.

SPARK PLUG REPLACEMENT

This engine uses a Champion RCJ6Y with .025 in. electrode
gap. Use an exact replacement and replace annually.
MAINTENANCE
CLEANING THE EXHAUST PORT, MUFFLER,
AND SPARK ARRESTOR
NOTE: Depending on the type of fuel used, the type and
amount of lubricant used, and/or your operating conditions, the
exhaust port, muffler, and/or spark arrestor screen may
become blocked with carbon deposits. If you notice a power
loss with your gas powered tool, you may need to remove
these deposits to restore performance. We highly recommend
that only qualified service technicians perform this service.
The spark arrestor must be cleaned or replaced every 50
hours or yearly to ensure proper performance of your product.
Spark arrestors may be in different locations depending on
the model purchased. Please contact your nearest service
dealer for the location of the spark arrestor for your model.
STORING THE PRODUCT
 Clean all foreign material from the product. Store idle unit
indoors in a dry, well-ventilated area that is inaccessible
to children. Keep away from corrosive agents such as
garden chemicals and de-icing salts.
 Abide by all ISO and local regulations for the safe storage
and handling of gasoline.
When storing 1 month or longer:
 Drain all fuel from tank into a container approved for
gasoline. Run engine until it stops.
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 and increased emissions. 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.
10 - English