- Before opening the crankcase, it is advisable to
check the axial clearance of the crankshaft. To do
this, use a plate and a support with specific tool
dial gauge.
Specific tooling
020262Y Crankcase splitting strip
020335Y Magnetic support for dial gauge
Characteristic
Standard clearance
0.15 รท 0.40 mm
Splitting the crankcase halves
Remove the 11 coupling screws to the crankcase.
- Separate the crankcase while keeping the crank-
shaft in one of the two halves of the crankcase.
Remove the crankshaft.
CAUTION
IF YOU FAIL TO DO THIS, THE CRANKSHAFT
MIGHT ACCIDENTALLY FALL.
- Remove the coupling gasket of the crankcase
halves.
- Remove the two screws and the internal cover
shown in the diagram.
CAUTION
WHILE OPENING THE CRANKCASES AND RE-
MOVING THE DRIVING SHAFT, CHECK THAT
THE THREADED SHAFT ENDS DO NOT INTER-
FERE WITH THE MAIN BUSHINGS. FAILURE
TO OBSERVE THIS PRECAUTION CAN DAM-
AGE THE MAIN BUSHINGS.
Fly 125 - 150 4T Engine
ENG - 123