37 / 71
Fig. 77
3
For easy removal of Rod 2.5 from Rocker arm,
position Piston at compression top dead center as
follows:
1
Remove Spark plug and then insert 1R411
through the spark plug hole.
2
Turn Flywheel [1] until Piston reaches the
highest position. (Turn Pulley [2] instead of
Flywheel [1] if the blower body is assembled to
the backpack frame.)
3
Turn Flywheel [1] (or Pulley [2]) 45 degrees left
and right to confirm the position of Piston.
4
If Valve does not move, Piston is positioned at
compression top dead center. If Valve moves,
Piston is positioned at exhaust top dead center.
In this case, bring Piston to compression top
dead center by turning Flywheel [1] (or Pulley
[2]) 360 degrees.
Tips
This method to find compression top dead center can
be applied to our all 4-stroke engines.
Fig. 78
4
Remove Rod 2.5 (2 pcs) [2] as follows. Insert a
Hex wrench 2.5 into M5x9 Hex socket set screw
[1]. Then, while pushing down the wrench to raise
the screw, pull Rod 2.5 [2] out of Cylinder with
1R311.
Tips
Rod 2.5 [2] can also be removed in the step of
removing Cam gear cover.
Fig. 79
5
Remove four M5x20 Hex socket head bolts [1] to
remove Cam gear cover [2] and Cam gear cover
gasket.
[2]
[1]
[1]
[2]
1R311
[2]
1R411
1R411
[1]
