Checking The Oil Strainer; Checking The Oil Pump; Checking The Oil Pump Drive Chain; Assembling The Oil Pump - Yamaha MBK X-MAX 300 2017 Service Manual

EAS30340

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer (feed)
Damage → Replace.
Contaminants → Clean with solvent.
EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump driven gear
• Oil pump housings
• Oil pump housing cover
Cracks/damage/wear → Replace the oil
pump.
2. Measure:
• Inner-rotor-to-outer-rotor-tip clearance "a"
• Outer-rotor-to-oil-pump-housing clearance
"b"
Out of specification → Replace the oil pump.
Inner-rotor-to-outer-rotor-tip
clearance
0.100–0.150 mm (0.0039–0.0059
in)
Limit
0.23 mm (0.0091 in)
Outer-rotor-to-oil-pump-housing
clearance
0.10–0.15 mm (0.0039–0.0059 in)
Limit
0.22 mm (0.0087 in)
1. Inner rotor
2. Outer rotor
3. Check:
• Oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the oil pump.
EAS30785

CHECKING THE OIL PUMP DRIVE CHAIN

1. Check:
• Oil pump drive chain
Cracks/stiffness → Replace the oil pump
chain and oil pump assembly as a set.
EAS30342

ASSEMBLING THE OIL PUMP

1. Lubricate:
• Inner rotors
• Outer rotors
• Oil pump shaft
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Install:
• Inner rotors
TIP
When installing the inner rotor, align the pins "1"
in the oil pump shaft with the grooves "a" in the
inner rotor.
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OIL PUMP