Pinion Gear/Reverse Gear - Suzuki DF9,9 Service Manual

Optimum tooth contact
The optimum tooth contact is shown at right.
A shim adjustment may be necessary to obtain this contact pat-
tern.

Gear backlash should be checked when increasing or
decreasing shim thickness to adjust tooth contact.
Example (1)
Incorrect topside toe contact:
Correction measures:
• Decrease thickness of forward gear back-up shim.
• Slightly increase pinion gear back-up shim thickness.

Do not set tooth contact in this position (top side toe
contact). Damage and chipping of forward and pinion
gear may result.
Example (2)
Incorrect bottom side toe contact:
Correction measures:
• Increase thickness of forward gear back-up shim.
• Slightly decrease pinion gear back-up shim thickness.

Do not set tooth contact in this position (bottom side
toe contact). Chipping of pinion gear may result.

PINION GEAR/REVERSE GEAR

1. Check the amount of backlash between the pinion gear and
forward gear. (See page 8-21.)
2. Install the propeller shaft/bearing housing assembly to the
gearcase.
 Propeller shaft bearing housing bolt:
3. Check the amount of backlash by slightly rotating the drive-
shaft by hand.
4. Backlash should not be less than when checked step (1).
If backlash is less, reduce the reverse gear back-up shim
thickness.
8 N·m (0.8 kg-m, 6.0 lb-ft)
LOWER UNIT 8-23
Optimum tooth contact
Approx. 1/3 of
tooth width
HEEL
Convex side
EXAMPLE OF INCORRECT
Top side toe contact
HEEL
Example (1)
EXAMPLE OF INCORRECT
Bottom side toe contact
HEEL
Example (2)
Approx.
1 mm
TOE
TOE
TOE