BRP Johnson 4HP - Driveshaft; Driveshaft Support Housing; Forward Gear; Pinion Gear

8-11
GEARCASE
FORWARD GEAR
• Make sure that all parts used in assembly are clean
and lubricated.
• After assembly, check the parts for tightness and
smoothness of operation.
• Before final assembly, be absolutely certain that all
gear contact, shim adjustments and tolerances are
correct.
• Failure to correctly adjust these areas will result in
gearcase damage. (See the “GEARS - SHIMMING AND
ADJUSTMENT” section on the page 8-17.)
• Do not re-use the gasket, the O-ring and the cotter pin
once removed. Always use new parts.
FORWARD GEAR
Apply gear oil to the following parts.
• Forward gear backup shim
• Forward gear
• Forward gear thrust washer
 HPF XR Gearcase Lubricant
NOTE:
The forward gear has the bushing and the dents at the side
of the dog bosses.
PINION GEAR
Apply gear oil to the following parts.
• Pinion gear thrust washer
• Pinion gear backup shim
• Pinion gear
 HPF XR Gearcase Lubricant
DRIVESHAFT / DRIVESHAFT SUPPORT
HOUSING
• Apply Triple-Guard grease to the oil seal lips.
 Triple-Guard Grease
• Apply the gear oil to the bushing in the housing.
 HPF XR Gearcase Lubricant
Forward