03/10
59
- Position the chain tensioner and 2 fixing screws
(8)
.
- Position the spring
(9)
.
- Position the screw
(10)
and gasket
(11)
(checking gas-
ket conditions, replacing it if necessary).
CHECKING TIMING
- Rotate the crank shaft 2 turns in the engine rotation di-
rection (clockwise).
- Turn the magneto flywheel
(12)
to position the "T" refer-
ence in front of the crankcase stud
(13)
.
- Make sure the cam shaft references
(14)
are parallel to
the head level
(15)
.
If references are not aligned, repeat the timing
procedure.
VALVE TIMING ADJUSTMENT
- Manually rotate the crank shaft in the operating direction
to correctly align the rocker arm with the cam
(A)
.
- Loosen the rocker arm adjusting screw locknut
(1)
.
- With a thickness gauge, adjust timing on each valve, us-
ing the rocker arm adjusting screw
(2)
.
Timing:
• 0.10 mm intake.
• 0.10 mm exhaust.
- Lock the rocker arm adjusting screw.
- Tighten the locknut.
8
Cs - N*m
10
10
Cs - N*m
8
Fig. 62
Fig. 63
Fig. 64
Fig. 65
