Lubrication System (Technical Specifications); Troubleshooting - um UXPW125 Service Manual

3.2 Lubrication system (technical specifications)

Engine oil
Capacity
Backlash between outer rotor and pump body
Oil pump Backlash between inner and outer rotors
Axial clearance between rotor and pump body
Requirements of tightening torque
Fastening bolt of oil pump: 10N.m
Screw on cover plate of oil pump: 3N.m
Name of
Type of damage
component
Excessive wear of inner and
Oil pump
outer rotors of oil pump
Too much foreign matters on
Oil screen
Too much foreign matters on
Oil filter
Lubrication
Clogged passage
system
UXPW 125 ENGINE SERVICE MANUAL AND EFI DIAGNOSTIC
Item
Specification
when filter is not removed
when filter is removed
when engine is completely dry

3.3 Troubleshooting

it or clogged.
it or clogged.
Standard
SJ 10W/40
1L
1.1L
1.2L
Symptom of Symptom of
component engine
Oil is not Engine overheats
pumped freely
or no oil is insufficient in
pumped. power.
Unit: mm
Service Limit
0.28
0.20
0.15
Remedy
Replace the oil
pump.
Clean the
screen
and is
Replace the oil
filter.
Clean and
unblock the oil
path.
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