Service manual

9-10 CRANKSHAFT/TRANSMISSION
Crankcase
•
Remove the following parts from the right crankcase half.
Transmission Shafts and Shift Rod [A] (see Transmis-
sion Removal)
Oil Tube [B]
Oil Screen [C]
O-ring [D]
Dowel Pins [E]
Crankshaft [F] (see Crankshaft Removal)
Oil Pressure Relief Valve (see Oil Pressure Relief Valve
Removal in the Engine Lubrication S ystem chapter)
Crankcase Assembly
CAUTION
The right and left crankcase halves are machined at
the factory in the assembled state, so the crankcase
halves must be replaced as a set.
NOTE
○
Be certain that all parts are cleaned thoroughly before
assembly.
○
Blow through all oil passages with compressed air to
clear any blockage in the crankcase halves and crank-
shaft.
WARNING
Clean the engine parts in a well-ventilated area, and
take care that there are no sparks or flame any-
where near the working area; this includes any ap-
pliance with a pilot light. Do not use gasoline or
low-flash point solvents to clean parts. A fire or ex-
plosion could result.
•
Press and insert the new ball bearings until they are bot-
tomed.
Special Tool - Bearing Driver Set: 57001-1129
[A] Ball Bearing
[B] Ball Bearing (sealed side towards crankcase)
•
Press and insert the new needle bearings so that the
bearing surfaces are flush with the end of the hole.
[C] Needle Bearing
[D] Needle Bearing (Insert it from outside.)
•
Apply engine oil to the bearings.
•
Install:
Oil Pressure Relief Valve [E] (see Oil Pressure Relief
Valve Installation in the Engine Lubrication System
chapter)