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7-1
SERVICING INFORMATION
TROUBLESHOOTING
ENGINE
Com plain
t
Symptom and
possibl
o
t:~u!'es
Enginb
will
not
suut,
C<:>mpre!lsion too
low
Of
is h.ird to
!l;ll'lrl.
1
Valve
cl cs11m
1
(:1-.1
out of
ad jus.tmen1
i
'Noo,
,,alve
ouidei; m r.1flof
se1111ng
of
v.-lves,
3.
V,:,lvc
~
:
mi:>:thrung.
••
Piston
f ings ~•r:c
$~ively
wom.
,;
'N11m•
dow1
,
cyhnder
bor
er.
6.
Starter mol.(>
r
l':rl11
1
ks
but too
sl ow
l
y,
7
Poor
so;.11ing
nl
s~ )atk
pluns.
Plugs
not
sp~rking
1.
Fouled
spark
plum:,
2.
W et
spark
pl~1gs.
3.
Defective
•nni1ion
(:<>
ii.
'
Open
"'
11hon ,n
hirih•tensh:in r.mdi:.
5.
Defec
tive
siunal
ut:11t
:
1ator of
i
gnition 11ni1.
No
fuel
re.iching the carburetors
I
.
Clogged
fu el
tank.
\'(;Ill
h()f1
9:.
2.
CI09!!Cd
IJI
ddec1111e
fu
el/cock.
3.
Oefective
c
t1rb~•rot1.11 IIMH
val,•e.
4.
Clom1f.:d
hu:!1 hose
or
f
uel
fill
er.
---
Enginn
!l;talts easily.
1
F()Ul<:11
SJ'
)
fl(k
plugs
2.
Oefe<.:live s1u11:1
I
gi:11e,ator or
inn1
1 or
11ni1
:J.
Cl
ogged
foel
hose.
•1.
Clo~mad
j~:1:1
in <:afburetors.
6.
va1
11e
clearance
o•Jl
91 :~
dJuSlnHt,,
t.
Noisy engin(I.
Excessivo
v,,1
vo
c:hauer
·1.
v
a1 ...
e clearance
to<
, l,:1191;:.
2
'Nc;:,k,.:m:d
o,
broken
,;olve
i;~uiuui:.
3.
'Non,
down
r1J(.
:
k,.:,
11nn
o,
rock;;r aim sh:,fL
N
oi
se appears to
c<>me
lronl
pistons,
1
Pi~tons
or
C'
f linde1
s
w
orn
d<>w
u.
2.
Com bus1ion ,;hhm
lmfS
foul
ed
wi1h
ct1
t
ho11
:i.
Pi
~tor,
p11u
or pi:non
pin
ho,~
w
orn.
4
Pis
l
on
11119::
or
ring groo.,.es
w
om
.
Noise
sf.lcmN
to
~ome from
timing
chaiu
1.
Stre;ched
ch;,,m
2
\11/◊m
sr,mckets.
3.
Tensi
on
adju:-":
1 1;:,
not w
orking,
Noise
S$ems
to come from
clutch,
I.
\11/<:,fl)
spl!nes
of COl.llll~rf:hl'lh Of
hub.
2
W orn 1 (1
1
.
~
th
o
f clutch
pl
otes.
3.
Di
storted <.:II.Itc
h
1
,l:-111:s.
driven and d
1
i
ve
4
\oV<,m
c1
u1ch
rei
ease
be;lrin9.
5
Clutch d:1mp1:r~ w
eakened.
Re
m
edy
Ad1m;t.
fl ftpa,r.
or
repla<.:e.
AdJl.ll,I.
Replace
.
n,ipl
ace,
Of
rebofe.
Const•lt
"c
h;1:1
11cal
c
on,plaints.,.
Re1i9h1,;
11.
Cl
ean
Cl
c,:m
:1nd
< hv.
Replace.
ncplflce.
Reph:ice,
Clean
or r,epl.ice
Clo;m
u, ,epl
ace.
Replace.
Clmm Of
rnpl
11ce.
I
Clt111n.
Replt•<.:l~,
Clean.
Clc;in.
Adjust
---
Adjust
.
R<.11
.
1
li1
c,~.
Aepla,::e
lfof>
l
ace.
Cl
e.an,
H~~
)l
ace.
Rc
pl
111:,1
Replace
tl
f.-~)l
ace.
Rep;;ur.
111
1
,q,lace.
Reptace.
R1
;
1 dl1<:~.
Replace.
Hlwlace.
Reol:.IC~ lh<!
~
)
dma,v
dr,,;en
9et1r,
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