Remove the upper crankcase bolts, following the speci-
Firstly, loosen the M6 bolts [A].
Secondly, loosen the M7 bolt [B].
Lastly, loosen the M8 bolts [C].
Remove the lower crankcase bolts, following the specified
Firstly, loosen the M7 bolts [A].
Lastly, loosen the M10 bolts as shown sequence [1 10].
Tap lightly around the crankcase mating surface with a
plastic mallet, and split the crankcase.
Take care not to damage the crankcase.
The upper and lower crankcase halves are ma-
chined at the factory in the assembled state, so the
crankcase halves must be replaced as a set.
With a high flash-point solvent, clean off the mating sur-
faces of the crankcase halves and wipe dry.
Gasoline and low flash-point solvents can be
flammable and/or explosive and cause severe
Clean the crankcase in a well-ventilated
area, and take care that there are no sparks or
flame anywhere near the working area; this in-
cludes any appliance with a pilot light. Do not use
gasoline or a low flash-point solvent to clean the
Using compressed air, blow out the oil passages in the
Upper Crankcase Assembly
Press the fitting [A] until it is bottomed.
Special Tool - Bearing Driver Set: 57001-1129