Yamaha EK25BMH Service Manual - Crank Shaft
CRANK SHAFT
POWR
5-48
E
9. Measure:
•
Connecting rod side clearance
(Use the thickness gauge.)
Out of specification
→
Reassemble.
NOTE:
If side clearance exceeds tolerance, disas-
semble the crankshaft and replace any
worn parts.
10. Install:
•
Roller bearing (on the crank 2)
11. Press-fit:
•
Roller bearing (inner race)
NOTE:
• Position the roller bearing with the
stamped mark
facing upward and
press-fit it until it contacts the crank 2.
• Apply Yamaha 2-stroke motor oil on the
roller bearing.
CAUTION:
B e sure to p re ss -f it the rol le r b ea rin g
squarely onto crank 2.
12. Install:
•
Roller bearing (outer race)
3
a
Thickness gauge (mm)
90890-06054
Connecting rod side clearance
0.2 - 0.7 mm (0.0079 - 0.0276 in)
Plate A............................................
90890-02386
Bearing pressure B........................
90890-02392
e
e
1
2
a
b
c
3