4-30 - POWERHEAD 90-817643R1 DECEMBER 1996
Crankshaft Installation
1. If lower bearing and gear were removed from crank-
shaft, slide gear in place (note keyway and key in gear
to crankshaft assembly). Install gear to crankshaft us-
ing an arbor press and suitable mandrel.
2. Install main bearing retaining ring after pressing main
bearing tight against oil gear.
PE-51084
a
b
c
a - Lower Bearing
b - Gear
c - Retaining Ring
!
CAUTION
Safety glasses should be worn when removing or in-
stalling ring seals.
3. Install ring seals (2) to crankshaft.
PE-51083
a
b
a - Ring Seal
b - Slot On Crankshaft
!
CAUTION
Any grease used for bearings INSIDE the powerhead
MUST BE gasoline soluble. Use only Quicksilver
Needle Bearing Assembly Lubricant. DO NOT use
2-4-C Marine Lubricant, or other lubricants inside pow-
erhead, or damage to engine may occur.
4. Grease crankshaft journal with Quicksilver Needle
Bearing Assembly Lubricant to hold bearing in place.
Position needle bearings on journal. There are 28
bearings per each center main.
PE-51081
a
b
a - Crankshaft Journal
b - Bearings (28)
IMPORTANT: Snap ring groove faces up towards fly-
wheel.
5. Attach main bearing races with holes towards lower
gear end of crankshaft. Secure each main bearing
race with retaining ring. Lubricate top main bearing
with 2-cycle engine oil and install to crankshaft as
shown.
PE-51083
a
b
b
c
a - Main Bearing Race
b - Retaining Ring (Groove Faces Flywheel)
c - Top Main Bearing (One Piece)
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