Ryobi RY10521A Manuel D'utilisation page 34

NOTE: If you use an air hose for drying, blow
through both sides of filter.
NOTICE:
Make sure the air filter is correctly placed in the
air filter base before reassembly. Never run the
engine without the air filter, as this may cause
serious damage to the chain saw.
CLEANING THE STARTER UNIT
See Figure 65.
Use a brush or compressed air to keep the cool-
ing vents of the starter assembly free and clean
of debris.
ADJUSTING THE CARBURETOR
See Figure 65 - 66.
WARNING:
The chain will move around the guide bar 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 on a stable surface so
that the chain/guide bar does not contact the
ground or any object. Keep all parts of your
body away from the chain/guide bar and muf-
fler. Failure to follow these instructions could
result in serious personal injury.
Before adjusting the carburetor:
 Use a brush or compressed air to clean the
starter cover vents.
 Clean the air filter. Refer to Cleaning the Air Fil-
ter in the Maintenance section of this manual.
 Allow the engine to warm up prior to adjustment
of engine idle speed.
WARNING:
Weather conditions and altitude may affect
carburetion. Do not allow bystanders close to
the chain saw while adjusting the carburetor.
Idle Speed Adjustment —The idle speed adjust-
ment controls how much the throttle valve stays
open when the throttle trigger is released. To
adjust:
All manuals and user guides at all-guides.com
MAINTENANCE
Page 34 — English
SCREW
STARTER COVER
VENTS
 Turn idle speed screw "T" clockwise to increase
idle speed.
 Turn idle speed screw "T" counterclockwise to
decrease idle speed.
PUSH DOWN KNOB
AND TURN TO LOCK
AIR FILTER
Fig. 64
Fig. 65
IDLE SPEED
SCREW "T"
Fig. 66