Assembling The Crankshaft - Yamaha EK25BMH Service Manual

POWR
4
CRANK SHAFT
5
Crank pin removal
Remove:
• Crank pin
Plate A............................................
90890-02386
Pressure pin B ...............................
90890-02390
Removing steps
(1) By forcing the pressure pin B
hydraulic press, remove the crank pin.
(2) Remove the crank pins from Crank 2
and Crank 3.
(3) Pressure pin should be pressed down
straight.

ASSEMBLING THE CRANKSHAFT

CAUTION:
• When reassembling the crankshaft,
wash all component parts in suitable
cleaning solvent.
• Always use new bearings and crank
pins.
Fitting the crank pin
(to the crank 2 and crank 4)
1. Install:
• Spacer B
• Crank 2
Spacer B ........................................
90890-02396
Support..........................................
90890-02394
2. Install:
• Crank pin
NOTE:
• Insert the crank pin into the pin hole by
tapping it with a copper hammer
• Apply Yamaha 2-stroke motor oil on the
crank pin.
5-44
a
1
(to crank pin hole)
3
4
(new)
E
1
a
with a
1
2
5
.