Ryobi RY39500 - Manual (Page 13)

13
MAINTENANCE
IDLE SPEED ADjUSTMENT
See Figure 11.
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 .05 in. electrode
gap. Use an exact replacement and replace annually.
CLEANING THE EXHAUST PORT AND
MUFFLER
Depending on the type of fuel used, the type and amount of
lubricant used, and/or your operating conditions, the exhaust
port and muffler 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.
SPARK ARRESTOR
The spark arrestor must be cleaned or replaced every 50
hours or yearly to ensure proper performance of the product.
Spark arrestors may be in different locations depending on
the model purchased. Please contact the 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.
Fig. 1
scabbaRd
Fig. 11
IdlE
spEEd scREw