BOMBARDIER Johnson 90 Service Manual page 311

LOWER UNIT
ASSEMBLY ANO INSTALLATION-90/1.15
Optimum tooth contact
Optimum tooth contact is shown at right.
A shim adjustment may be necessary to obtain this contact
pattern.
IACAUTION
1
Forward gear backlash must be checked if either or both
driveshaft or forward gear shims are changed.
Example (1)
lncorrect topside toe contact:
Correction measures:
• Decrease thickness of forward gear shim.
• Slightly increase pinion gear shim thickness.
1
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CAUTION
1
Do not set tooth contact in this position (top side toe
contact). Damage and chipping of forward and pinion
gear may result.
Example (2)
lncorrect bottom sida toe contact:
Correction measures:
• lncrease thickness of forward gear shim.
• Slightly decrease pinion gear shim thickness.
IACAUTION
1
Do not set tooth contact in this position (bottom side toe
contact). Chipping of pinion gear may result.
Optimum tooth contact
approx. 1/3 of
tooth width
EXAMPLE OF INCORRECT
Top slde toe contact
EXAMPLE OF INCORRECT
Bottom side toe contact
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