Cleaning The Engine; Replacing The Spark Plug - Ryobi RY5020 Manuel D'utilisation

Idle Speed Adjustment —The idle speed adjust-
ment controls how much the throttle valve stays
open when the throttle trigger is released. To adjust:
 Turn idle speed screw "T" clockwise to increase
idle speed.
 Turn idle speed screw "T" counterclockwise to
decrease idle speed.
WARNING:
THE SAW CHAIN SHOULD NEVER TURN AT
IDLE. Serious personal injury may result from
the saw chain turning at idle.

CLEANING THE ENGINE

See Figures 65 - 66.
Clean the cylinder fins and flywheel fins with
compressed air or a brush periodically. Danger-
ous overheating of the engine may occur due to
impurities on the cylinder.
WARNING:
Never run the saw without all the parts, includ-
ing the clutch cover and starter housing,
securely in place.
Because parts can fracture and pose a danger
of thrown objects, leave repairs of the flywheel
and clutch to factory trained authorized service
center personnel.
NOTE: If you notice a power loss with the gas-
powered tool, the exhaust port and muffler may
be blocked with carbon deposits. These deposits
may need to be removed to restore performance.
We highly recommend that only qualified service
technicians perform this service.
CHECKING THE FUEL FILTER
See Figure 67.
Check the fuel filter periodically. If contaminated or
damaged, have fuel filter replaced by an authorized
service center.

REPLACING THE SPARK PLUG

See Figure 68.
This engine uses a Champion RCJ6Y with .025 in.
electrode gap. Use an exact replacement and
MAINTENANCE
CYLINDER
FLYWHEEL FINS
Page 35 — English
CLEAN
FINS
CLEAN
FUEL FILTER
Fig. 65
Fig. 66
Fig. 67
Fig. 68