Oil Pump, Primary Drive and Starter Drive

OIL PUMP

1. Remove:
•Screw
• Pump cover 1
• Pump shaft 2
• Pin 3
• Inner rotor 4
• Outer rotor 5
• Spring 6
• Relief valve 7

2. Measure:
•Clearance "A" (between inner rotor 1 and outer rotor 2
• Clearance "B" (between outer rotor 2 and pump housing 3 )

Out of specification ->  Replace oil pump.

PRIMARY DRIVE

1. Inspect:
• Primary drive gear 1
• Primary driven gear2

 Wear/Damage -> Replace both gears, 
Excessive noises during operation-► Replace both gears.

STARTER DRIVE

Electric Starter Clutch

1.  Check:
• Roller 1 operation
• Spring 2 operation
• Spring cap 3 operation

Unsmooth operation ->  Replace one-way clutch.

2.  Inspect:
• Surface 4 of the idle gear 

Pitting/Wear/Damage ->  Replace.

Starter Clutch Shaft (A.C.G. shaft)

1. Check:
• Shaft 1
• Oil seal 2

 Wear/Damage — Replace.

• Bearing 3

Unsmooth operation - Replace.