Derbi GPR125 Workshop Manual page 146

4-stroke
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4 - ENGINE
63. Adjusting the tensioner:
- Press the tab (100).
- Push the timing chain tensioner (101).
- Release the tab (100).
CAUTION
64. Fit:
- A NEW tensioner seal.
- The timing chain tensioner (102).
- The 2 tensioner bolts (103).
Timing chain tensioner bolts.
1,1-1,3 kgf.m (11-13 N.m)
65. Fit:
- The spring (104), pressing it down until the bolt is in
position.
- The tensioner central bolt (105).
Central timing chain tensioner bolt.
0,8-1 kgf.m (8-10 N.m)
CAUTION
66. Fit:
- The camshaft sprocket locking tool. (99).
The camshaft sprocket locking tool:
Ref. 865259
67. Tighten:
- The 2 bolts on the sprockets to the nominal torque.
Sprocket bolts:
2,5-2,7 kgf.m (25-27 N.m)
146
DO NOT TIGHTEN THE SPRO-
CKETS TO THEIR TORQUE SET-
TING UNTIL THE SUBSEQUENT
TENSIONING OF THE TIMING
CHAIN HAS BEEN PERFOR-
MED.
MAKE SURE THAT LOCTITE
270-TYPE THREAD SEALANT
HAS BEEN APPLIED TO THE
SPROCKET BOLTS.
100
102
103
105
104
99
101

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