Cylinder Head/Valves - Precautions In Operation; Cylinder Head/Valves Troubleshooting; Low Compression/High Compression; Excessive Smoke - SMC Networks ATV50 Service Manual

6-0 02. Preca autions i
Ge eneral In nformatio
●
This chapt ter is conta
piston/pis ton ring/pis
C Cylinder
C Clearance b
and
Piston & P
pis ston ring
Clearance
Piston & P
Clearance
pis ston ping
Clearance e between p
To orque Va alue
Cy ylinder head Nut
Ex haust pipe s stud bolt
Sp ark plug
6-0 03. Troub leshooti
Low w Compre ession

Cylinder head gask

Cylinder head warp

Cylinder o or piston ri
Hig gh compre ession

Excessive e carbon b
Exc cessive no oise

Piston an nd cylinder

Excessive e carbon b
Exc cess smok ke

Cylinder o or piston ri

Improper r installatio

Piston or cylinder w
Ove erheating

Excessive e carbon b

Engine co ooling syst

Oil supply y is out of

Wrong ig nition timin
n Opera tion
on
ained main tenance an
ston pin an nd clip.
Item
ID of Cylind der bore
Cylinde ericity
Circular d degree
d Warpage
Cylinder head C
between pist ton ring
ring groove
e of the mou uth of
pi ston ring
OD of p piston
e between p piston and cy
OD of pis ton pin
piston pin ho le and pisto
ing
ket leaking or damage
ped or crac cked
ings worn out
build-up on n piston hea
worn out
build up
ings worn out
n of piston n rings
wall scored or scratch
build-up on n the piston
tem (fan, c cylinder air
order.
ng
SMC C ATV 50
nd service for cylinde
Standard
40.00
fir rst ring 0.03
second
0.03
ring
f first ring 0.1
second
0.1
ring
39.95
cylinder 0.03
9.996
on pin 0.00
1.4kgf-m/ /14Nm
0.9kgf-m/ /9Nm
2.0kgf-m/ /20Nm
ed
ad or in co ombustion
hed
n or combu ustion cham
shroud... etc.) works
0/100 S Service M
Chapte er 6 Cylind
r head, Cy ylinder, and
Us
d value (m m)
valu
00-40.015
----
----
----
3－0.05
3－0.05
5-0.35
5-0.35
58-39.972
34-0.047
6-10.000
08-0.015
chamber
mber
s badly.
Manual
der Head/V Valves
d reed valve e
sage
e (mm)
4 0.10
0.05 0
0 0.03
0.03 0
0.1
0.1
0.6
0.6
---
0 0.10
----
----
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