Crank Main Bearing; Drive Gear; Inspection; Cleaning - Yamaha 25J Service Manual

POWR

INSPECTION

Water
temperature
Below 48˚C (118˚F)
Above 52˚C (126˚F)
If the valve opening and or temperature
and valve-lift are not within the specifi-
cations, replace the thermostat.
G65000-0

CRANK MAIN BEARING

Cleaning

1. Using a soft brush and solvent, thor-
oughly clean the bearing. Dry it with air,
and sparingly lubricate it with two-cycle
outboard motor oil.
CAUTION:
Blow-dry the bearing without spinning it or
making scratches on the bearing balls.
Inspection
1. Hold the bearing inner race and slowly
turn the bearing outer race with your
fingers. If any rough spots are felt,
replace the bearing.
G65500-0

DRIVE GEAR

(OIL INJECTION PUMP DRIVE)

1. Visually inspect drive gear teeth for
cracks pitting or wear, and replace the
gear if such are found.
G66000-0
DRIVEN GEAR
(OIL INJECTION PUMP DRIVE)
Inspection
1. Visually inspect driven gear teeth for
cracks pitting or wear, and replace the
gear if such are found.
5-10
E
Valve lift
0 mm
Minimum
3 mm (0.12 in)