47
BACKLASH MEASUREMENT
BACKLASH MEASUREMENT
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
back-lashes are larger than specification,
the pinion gear may be too high.
•
If both the forward and reverse gear
back-lashes are smaller than
specification, the pinion gear may be too
low.
•
If either of these conditions exist, then
check the pinion gear shim(s) selection.
MEASURING THE FORWARD GEAR
BACKLASH
1. Measure:
y
Forward gear backlash
Out of specification
Æ
Adjust.
Measuring steps:
(1) Position the bearing housing
puller so that it pushes against the
propeller shaft.
(2) Set the lower unit upside down.
Forward gear backlash:
0.20 - 1.15 mm (0.008 - 0.045 in)
Bearing housing puller claw:
YB-06234/90890-06503
Universal puller:
YB-06117
Stopper guide plate:
90890-06501
Center bolt:
90890-06504
Center bolt:
5 N
y
m (0.5 kgf
y
m, 3.6 ft
y
lb)
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