Backlash; Measuring The Forward Gear Backlash - Yamaha 25BMH Service Manual

LOWR

BACKLASH

BACKLASH
NOTE:
• Do not install the water pump compo-
nents when measuring the backlash.
• Measure both the forward and reverse
gear backlashes.
• If both the forward and reverse gear
backlashes are larger than specifica-
tion, the pinion gear may be too high.
• If both the forward and reverse gear
backlashes are smaller than specifica-
tion, the pinion gear may be too low.
MEASURING THE FORWARD GEAR
BACKLASH
1. Measure:
• Forward gear backlash
Out of specification → Adjust.
Forward gear backlash
0.31 - 0.72 mm (0.012 - 0.028 in)
Measuring steps
(1) Set the shift rod into the neutral posi-
tion.
(2) Install the propeller shaft housing
puller so it pushes against the propeller
shaft.
Bearing housing puller claw ........
90890-06564
Stopper guide plate ......................
90890-06501
Center bolt.....................................
90890-06504
Center bolt
5 N m (0.5 kgf
•
6-28
E
1
2
3
m, 3.7 ft lb)
• •