Ryobi RY10521A Manuel D'utilisation page 36

NOTE: Be careful not to cross-thread the spark
plug. Cross-threading will seriously damage the
cylinder.
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 per-
formance 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.
WARNING:
To avoid a fire hazard, never run the chain saw
without the spark arrestor in place.
INSPECTING AND CLEANING CHAIN
BRAKE
See Figures 71 - 72.
 Remove the clutch cover and clean the chain
brake components. Check wear on the brake
band and replace if worn or deformed. The band
thickness should not be less than 0.024 in., or
worn halfway through.
 Always keep the chain brake mechanism clean
and lightly brush the linkage.
 Always test the chain brake performance after
cleaning. Refer to Operating Chain Brake for
additional information.
 Check the chain catcher and replace if
damaged.
All manuals and user guides at all-guides.com
MAINTENANCE
Page 36 — English
CHAIN CATCHER
BRAKE BAND
CLEAN THE CHAIN BRAKE
WARNING:
Even with daily cleaning of the mechanism, the
dependability of a chain brake to perform under
field conditions cannot be certified. Keep the
SAFE-T-TIP nose guard on the saw's guide bar
®
and use proper cutting techniques.
STORING THE PRODUCT
 Clean all foreign material from the product. Store
it in a well-ventilated place that is inaccessible
to children. Keep away from corrosive agents
such as garden chemicals and de-icing salts.
 Abide by all Federal and local regulations for
the safe storage and handling of gasoline.
CLUTCH
Fig. 71
COVER
LUBRICATE THE CHAIN
BRAKE LINKAGE
Fig. 72