Yamaha e60hwd, Service Manual

Page: 91 / 199

69D5G11 5-32
9
8
7
6
5
4
3
2
1
Crankcase
Removing the oil seal housing
1. Remove the oil seal housing
1
.
Removing the crankcase
1. Remove the crankcase bolts in the
sequence shown.
NOTE:
Insert a flat-head screw driver between the
pry tabs to pry off the crankcase.
Removing the crankshaft assembly
1. Remove the crankshaft assembly and oil
seal housing.
Checking the cylinder bore
1. Measure the cylinder bore (D
1
— D
6
) at
measuring points
a
,
b
, and
c
, and in
direction
d
(D
1
, D
3
, D
5
), which is parallel
to the crankshaft, and direction
e
(D
2
,
D
4
, D
6
), which is at a right angle to the
crankshaft.
a
: 10.0 mm (0.39 in) from the cylinder head top
surface
b
: 5.0 mm (0.20 in) above the exhaust port
upper edge
c
: 5.0 mm (0.20 in) below the scavenging port
lower edge
69D50330
69D50360
69D50350
1
69D50340
Cylinder bore diameter (D
1
— D
6
):
72.000 — 72.020mm
(2.8346 — 2.8354 in)
Cylinder gauge
1
:
90890-06759
69D5G11_05_1 06.10.16 13:51 Page 33