Table of Contents
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l-3
SERVICING
INFORMAJIOff
Comphtint
Symptc,m
nnd
ponih!o
4;1w11e~
Remedy
-
Dirty or heavy
I.
roo
muc:h
tlr\Qine
oil in
the
r.nglne.
Chec.k
with
level window,
exhaust
!t,noke.
drain out
exces.s
oil
2.
worn
piston
rings
o,
cvllnders.
Aepl
~ce.
3.
Worn
valve
gu,des.
Rep
l
ace
.
4.
Cylirn:fer walls scored or
scoffed
Rc
h
o
r-1: <.
> r r
u11lm:1
:.
5.
Worn valves
stems
R<ip
l
,:if;ti
.
6.
Defec
tive s tem
seal.
H<;p
l
/11:(t
.
7,
W
o
rn
o
il
r
ing
:;ide
r;,1i115,
1
ne,)
l11ct:i.
Engine
l
ac:ks power.
I.
Loss
ol
vah11:
c learance.
A
djust
2.
W eaken
ect
valve
spr111gs.
Replace
3.
Val
ve
timing out of adjustmenL
Adh•st,
••
W orn
piston
rings
or
cylinders,
Rep lili.:O
•
5. Poor
seating
of valves.
Rep,,h
0.
Fouled
spark
olu9.
C
lc~n Qr n
.:i,111<:I).
7.
Spark plu9
!WPS
inc
o,rect.
Adjo!;I
(Ir
lt!111
11CI'!.
8
.
Cto9ged
jets
in
carburetors
Clt!llll.
9.
Float< hambe
r
fuel
te-.,el
o
t•t
of ;1d
1
u:;\mc
n1.
AdJmU.
10
Clonned
ili
r
<;le tme, o
h.lmcm.
Ctean
.
11
Ci1rl>l1rut<)r
btilt1•1c
ing
$(:ll)
W
IOOSt!.
Retighten.
12
$0(:king llh
fr()m
i
nll:lk4'
1 )•1
:
,
i:.
Retighte
n
or
replace.
13
.
roo
,,,ur.h
t!O{:)IIHl:
OIi.
Drain o ut
excesi;
oil,
·-
Engine overheats.
I
I
Hea-.,y
ca1bon
d
eposit
o
n
piston
c,
owns
Cl,.rnn.
2
Not
e
nov!lh
oil
in t he
en~Jine,
A
dd oil.
3.
Oefec1ive oil
pvmp
0
1
cl
umJe
r.l o
il
r,ilc
uiL
He1)hlc:n
o
r- clean.
4
.
Ft1
e
l
l
eve
l
tOQ
lo
w ,n
110:.,1
<;h{HTib(H$
Adjust.
5,
5m;kmu
1.1ir
h
o
m
i111:,kc
p
•J>•;~.
Retighten
or
replace.
6.
Use
i11(:onc1 ;\
engine
Oil.
Change.
CARBURETOR
Compla
int
Symptom
und poin:iblo
<:;;1~1
,0$
nemady
Troubl
e
with
tU8rting.
1.
5
111111:i,
j
fll
,11
c:109gect.
Cl
ean.
2.
Sui11e,
1),
f►e
Is
c:1
099ed.
Cl
ean
3.
Alf
l
eaki
ng
ftom
•
joim
between stan
er
bodv
i.'lnd
Ch
8<;k.
s1t1rtor
body :.md
ca.-buretor.
Cl,
l rhurcttJ
f Im
l
iyhlnt:SS.
i.t~l
ju::,t
;md
,
1
,:ph1c:e
g.'l:;k1:tl.
4,
Air
lct1kinu
from
Ci
l
rhtirc1or·t:
j(,in\
(II v:'1¢uum
gaugl;l:
1ni 111
.
Check and
adjus1.
••
5ti
ir\cr
p
l
11n9c
1
it;
n<>t
Oi,•:r
;ltmy
vmr11}rly
.
Check a
nd
adjust.
-
ldlln_
g
o,
low-speed
1.
Pilot
1et.
pilot a,r
1et a
re
cl
ogged
01
l oose.
Che<;k.
;.,nd
,;l~;:in.
trouble
2.
Air
leallint1
from c.a1bur~tor·s
joint.
Vilcvum
o
at19e
jo
inl.
Ch o<
;k
;md
dmm.
or
starter
.
3
Pilot
o
utlo
t
or
b
yp,:i~t; is <;lo~,oorl
Ctu;iC:k llfld
c
l~f.11).
'
4
S
l
tirll;r
l)l
u
ng(H
i~
m·,t
lully CIOS(HI.
Ch
eck and
adjust.
M&dium-or
high
1.
Main j et
o
,
main
air
1et
is
cl
O!J!J8d,
Ch
eck
;:,nd
~
:11,}ml.
-speed
trouble
2.
Nee
dle
jet i
s
cl
ogne
d
.
Ch1}C1t
:'Ind 1
:h,;<111.
3
ThrotUo v;1
l
vo
,
i;
not
opc1~
1ti119
propc1ly.
Ctmctt
lh(OUle
val
ve
lo,
npe,atloo.
4.
Fu
~I
filh:I
Iii.
c:loygi,d.
Ch
eck and
cl
ean.
Overllow
und
fuel
lev•
1.
Needle
valve
i
s
wom
OI' ctama~ed
.
Roph1co
,
e
l f1t1ctl•t1tion
s.,
2
Spring
in
needl
e
valve is
brok.en
llep
l:tr.:<:
3
Fl<,.:,t
i
s
ri
ot
working
p1ope
1ly
Clm<:k llm1
ad1ust.
4
.
Fnrc ign
1
n;11tm
Im
::
:1dhnn
:d
16
u,,:,~dh
:
"al
v1~.
Cl
l!illl.
,.
Fu
r.I l t:Ytll
is
10()
high
(
II
lo
w
.
AdJU/11
f loat
h
eighl
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