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Tract
or s ,
Lawn
and
Garclen
-
11
0
and
11
2
Ge
neral
10
M- 205
9-
(A
p
r-67)
T u
ne-
Up
and
Adj
ustm
e
nt
15
-1
Gro
up
15
T
UNE
-UP
AND
ADJUSTMEN
T
IMPOR
T,iN
T'
Be
f
or
e a({c
mp!
ill/-i 10
lUlie-u
p the
170
or
77
2 'j'Y(lc!
o)
" e
ngi7l
c
,fiYs!
dete
rm
ine
it
!Jc
Y
fo
nnmzc
e c
an
be
resl
ore
d
by
11III
e
-II
!),
Do
LI
d s
by
rna/d
ull'-
/lIe
pre
1im
il1a n
J
engine
te
sts
be
lo
lL
'.
PRELIMINARY
ENGINE
TESTING
Op
C)
r
,,
'ion
Specifico/ion
Refe
re
nc
e
Cyli
ncle r c
ompr
eSS
ion
110-120
psi
(1000
rpm)
.c h un 20,
Gr
oup 5
or
25
C
l"
cl
nk
c
;;
l
se
vacuum
5-10
inche
s o
fwat
c r co
lumn
Se
c
tion
20,
Group
5
or
25
B
attery
hy
dr
o
meter
t
es
t
1.260-1.280
sp.
gr.
1
00
~
)i,
c
harged
at
80 '
F.
Se
ction
40
, Gr
oup
10
MINOR
TUNE-UP
GUIDE
Op
er
ati
o n
Specifi
co
l
ion
Reference
C
hange
o
il
i
Summ
e r
a
bo
ve 32 '
F.
-
S!\E
30
(AM
30730)
Winter
bel
ow
32"
F.-
SAE
5W-20
(AM
30710)
Section
10, Gr oup
20
Clean
and
l'
eg
ap
sp
a
rk
plug
--
_.
Clean
e
lectrod
es
Clean
in
s
ulation
Fi
.
eplac
e ga
sket
:,pt g
ap
at
0.025
in.
Se
ction
40,
Group
10
Hem
ove
air
c
lea
ne
rand
el
ea n by
tappin
g li g
htly
again
s t fla t
surface
Ch
ec
k
air
cl
e
an
e r c onclitiun
f1.epla c e
if
nec
C'
s
sa
ry
Section
30,
Group
15
A
djust
c
arbur
e
tor
Hi
g-
h
speecl
mixture
needl
e
Idle
mixture
n
ee
dle-
Section
30,
Group
10
Adjust
go
vernor
sp
ee
d Sp
eed
(fast)-
3800
i'
pm
no
load
;
S
pel
'd
(idl
e
)-
1200-1700
rpm
Se
ction
20,
Gr
oup
20
or
40
Che
ck a
nd
cle<1n
fuel
tank,
~ed
im
en
t
bow 1
and
s
tra
i
n(
~
J'
He
g-
ula
r
gH
s o
lin
e o
nly
Section
30,
Group
20
Litho
in
.. '. A.