Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playCrankcase breather (pcv) hose inspection
Inspect the crankcase breather (pcv) hose in the
following procedures:
lift and support the fuel tank with the prop stay.
Refer to “fuel tank removal and installation” in section 1g .
Inspect the crankcase breather (pcv) hose (1) for
wear and damage.
If it is worn or damaged ...
Spring pre-load adjustment
To change the spring pre-load,
turn the adjuster 1 clockwise or
counterclockwise. Turning the
adjuster clockwise will increase
the spring pre-load. Turning the
adjuster counterclockwise will
decrease the spring pre-load.
There are five grooved lines on
the side of the adjuster 1 for re ...
Transmission removal
Remove the engine assembly from the frame. Refer to “engine assembly
removal” in section 1d .
Remove the engine top side. Refer to “engine top side disassembly” in
section 1d .
Separate the upper and lower crankcases. Refer to “engine bottom side
disassembly” in section 1 ...