Idle Speed Check; Checking The Spark Advance; Engine Timing Check - Gilera SMT RCR 633793 Service Station Manual

Maintenance
- The throttle valve should slide freely in the mixture chamber. Replace it in case of excessive clearance
due to wear.
- If there are wear marks in the mixer chamber causing inadequate tightness or a free valve slide (even
if it is new), replace the carburettor.
- It is advisable to replace the gasket at every refit
WARNING
PETROL IS HIGHLY EXPLOSIVE ALWAYS REPLACE THE GASKETS TO AVOID PETROL LEAKS

Idle speed check

- Before adjusting idle speed, set the flow set
screw as described below.
- Tighten the flow set screw (1) until it stops and
then undo the screw as many turns as recommen-
ded (1+ 1/4) so as to obtain a first adjustment.
- Warm up the engine and rest the vehicle on a flat
surface.
- Tighten the idle speed set screw until the ideal
engine idle speed is obtained.
- Engine idle speed: 1,900 ± 100 rpm.
- Turn the flow set screw (1) slowly until the max-
imum rotation rpm possible is obtained.

Checking the spark advance

Engine timing check

- Remove the crankcase left cover.
- Connect the corresponding specific tool, the red
gripper to the battery positive (+) terminal, and the
black gripper to the battery negative (-) terminal.
Connect the synchroniser to the high voltage con-
ductor (the wire connecting the high voltage coil to
the spark plug).
Specific tooling
020330Y Stroboscopic light to check timing
MAIN - 22
SMT RCR