Checking The Relief Valve; Checking The Oil Delivery Pipes; Checking The Oil Strainer - Yamaha 2009 YZF-R1 (Y) Service Manual

1. Inner rotor
2. Outer rotor
3. Oil pump housing
3. Check:
• Oil pump operation
Rough movement → Repeat steps (1)
and (2) or replace the defective part(s).
EAS24970

CHECKING THE RELIEF VALVE

1. Check:
• Relief valve body "1"
• Relief valve "2"
• Spring "3"
• Damage/wear → Replace the defective
part(s).
EAS24980

CHECKING THE OIL DELIVERY PIPES

The following procedure applies to all of the oil
delivery pipes.
1. Check:
• Oil delivery pipe 1 "1"
• Oil pipe "2"
Damage → Replace.
Obstruction → Wash and blow out with
compressed air.
EAS24990

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer "1"
Damage → Replace.
Contaminants → Clean with solvent.
5-55
OIL PUMP