Adjusting Valve Settings That Are Outside That Specified - Derbi GPR125 Workshop Manual

4-stroke
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3 - MAINTENANCE
ADJUSTING VALVE SETTINGS THAT ARE OUTSIDE
THAT SPECIFIED
Outside that specified => Dismantle the timing
STEPS TO FOLLOW TO DISMANTLE THE TIMING (continues
from Point 3 onwards)
1. Extract:
- The starter motor connector.
- The 2 bolts (1) securing the starter motor.
- The starter motor (2).
N.B.
2. Extract:
- First of all the central timing chain tensioner bolt (3).
- The 2 bolts (4) securing the timing chain tensioner.
- The timing chain tensioner.
- The tensioner seal.
CAUTION
3. Fit:
- The camshaft sprocket locking tool (5).
The camshaft sprocket locking tool:
Ref. 865259
4. Extract:
- The 2 bolts (6) from the camshaft sprockets.
- The camshaft sprockets (7).
73
REMOVE THE STARTER MOTOR
TO AID IN EXTRACTING THE
TIMING CHAIN TENSIONER.
ON DISMANTLING THE TI-
MING, ALWAYS REMOVE THE
CENTRAL TIMING CHAIN BOLT
FIRST OF ALL. FAILURE TO DO
SO MAY LEAD TO SEVERE DA-
MAGE TO THE TIMING CHAIN.
2
3
3
4
5
7
6
1

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