Yamaha TZ250M1 Owner's Service Manual page 163

OIL PUMP
EC4J4000
INSPECTION
EC4J4100
Oil pump
1. Measure:
• Tip clearance
Measure the clearance between the inner
a rotor 1 and outer rotor 2.
Out of limit ≥ Replace the inner rotor and
outer rotor as a set.
Tip clearance limit:
0.15 mm (0.0059 in)
EC4E4310
Strainer
1. Clean:
• Strainer 1
Use compressed air.
NOTE:
• Clean the strainer every 500 km (300 miles).
• If a lot of metallic dust in noticed, disassemble
the engine and check.
EC4J4200
Oil pump gear shaft
1. Inspect:
• Oil pump gear shaft 1
Wear/Damage ≥ Replace.
EC4H4100
Oil delivery pipe
1. Inspect:
• Oil delivery pipe 1
• O-ring 2
Damage ≥ Replace.
• Oil orifice a
Clogged ≥ Blow.
EC4J5000
ASSEMBLY AND INSTALLATION
EC4J5102
Oil pump
1. Install:
• O-ring 1N
To oil delivery pipe 2.
NOTE:
Apply the lithium soap base grease on the O-
rings.
4-65
ENG