SERVICE INFORMATION
TROUBLESHOOTING
CYLINDER REMOVAL
SERVICE
INFORMATION
GENERAL
7-1
7-1
7
-2
7.
CYLINDER
/
PISTON
PISTON REMOVAL
PISTON
IN
S
TALLA
TION
CYLINDER INSTALLATION
7-2
7-5
7-5
• Camshaft lubncation oil is fed
to
the cylinder head through an orifice
In
the cylinder head, cylmder and crankcase.
Be
sure
that
this orifice is
not
clogged and
that
the O-rings
and
dowel
pins are in place before installing the cylinder.
SPECIFICATION
mm
lin)
ITEM
STANDARD
SERVICE LIMIT
Cylinder
1
.0.
39.005 39.015
(1.5356
1
.5
360)
39.05
(1.537)
Taper
0.10
(0.004(
Out-ai-round -
0.10
(0.004)
Warpage across
top
-
0.05
(0.002)
Piston, Piston Piston 0 .
0.
38
.
980
39.
000
fl .
5346
1.5354)
38.90
(1.5321
Pin,
piston
Piston pin bore 13.
002
-
13.008
(0.5
119
- 0.5121 13.10
(0.516)
rings
Piston Pi"
0.0.
12
.
994
-
13
.
000
(0.5
116
- 0.
5118)
12.98
(0
.
511)
Piston-Io-pin clearance
0.002
- 0.01 4
(0.0001-0.00061
0.08
(0.0031
Piston rlng-
to
·ring
TOP
0 .
015
0.050
(O.0006
0.0020)
0.12
(O.005)
groove clearance
SECOND 0 .
015
0.050
10.0006
-
0.0020)
0.12
10.0051
Piston ring end gap
0.10
-
0.30
10.00
4 -
0.0121
0.50
(0.0201
Cylinder-
to
-piston clearance
0.010
0.
040
10.000
4
0.0016)
0
.1
5
(O.COBI
Connecting rod small end 1.0.
13.016
-
13.034
(0.S124
0.5131)
13.08
{O.SlS)
TORQUE VALUE
Cylinder bolt
10
N-m
(1.0
kg-m,
7.2
ft
-
Ib)
TROUBLESHOOTING
Low
or unstable compression
• Worn cylinder or piston rings
Excessive s
moke
Worn cylinder, piston, or piston rings
Improper installation
01
piston rings
Scored or scratched piston or
cylinder wall
Overheating
Excessive carbon
built up on piston or combustion chamber
wall
Knocki
ng or
abnorma
l noise
Worn piston and cylinder
•
Ex
cessive carbon build-
up
7-1
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