Loading ...
Loading ...
Loading ...
ADJUSTMENT
d. If holes do not align, repeat steps in throttle
cable adjustment_
13.
Carburetor adjustment
NOTE: ADJUST THROTTLE CONTROL CABLE
BEFORE MAKING ANY ADJUSTMENT
TO CARBURETOR,,
THROTTLE
LEVER
!
HOLES "A"
With engine off turn high speed mixture screw clock-
wise ("-'_) closing finger tight ONLY, and turn
counterclock wise (_-_ ) 1.3._ turns (Fig. 20).
NOTE; THE SCREW SEAT MAY BE DAMAGED
BY TURNING IT TOO FAR CLOCKWISE.
MIXTURE [
SCREW --- _9
HIG.SPEEDU.E
CLAMP
MIXTURE
SCREW
FUEL
FILTER
FIGURE 20
.030" FEELER
GAUGE
SPARK PLUG
FIGURE 2t
12. Throttle Control Cable Adjustment
DO NOT MAKE UNNECESSARY ADJUSTMENTS, FAC-
TORY SETTINGS ARE SATISFACTORY FOR MOST AP-
PLICATIONS AND CONDITIONS. IF ADJUSTMENTS
ARE NEEDED, PROCEED AS FOLLOWS.
a o Make sure air cleaner is clean (see page 16),
b, With engine not running, place throttle con-
trol in "FAST" detent (not in "CHOKE"
position),
c Check that hole in throttle lever and hole in
plate line up (Fig_ 20 _ Insert). tf holes "A'"
are not aligned, loosen clamp screw and move
throttle cable until holes are aligned, Tighten
clamp screw.
b,
e
g
h,
Turn idle mixture screw clockwise ("-_) closing
finger tight only, and tutn counterclockwise (_'_)
1-½ turns (Fig, 20)
i i,,i .... i,i
REFER TO "STARTING 'THE ENGINE"
II
PAGE 11 .,,
i
..................... i
Start engine and allow to warm for five minutes.
Make final adjustment with engine running and
Gear Shift lever in "'NEUTRAL" position
With throttle control lever in "FAST" position,
turnnhigh speed mixture screw clockwise
( f _ ) until engine runs "rough" then turn
counterclockwise ('_"_) _ turn
With throttle control lever in "SL O W" position,
turn idle mixture screw counterclockwise
(_"_) until engine runs "rough" and then turn
clockwise ("-'_) until engine begins to die. Turn
idle mixture screw to a point midway between
these positions,
With throttle control lever in "SLOW" position,
engine should idle at 1700 RPMo ff engine idles
too slow, push throttle control lever above idle
and turn idle speed screw one turn clockwise
("'_). Set throttle controllever at "SL OW'_ Re.
peat until satisfactory idle is attained
ff engine idles too fast with throttle control lever
in "SLOW" position push throttle control lever
above idle and turn idle speed screw one turn
counterclockwise (._t Set throttle control/ever
at *'SLOW". Repeat until satisfactory idle is at-
tained
High speed stop is factory adjusted, DO NOT
ADJUST - DAMAGE MAY RESULT
18
1 4, Replace Spark Plug
Replace spark plug at the beginning of each mowing season or
every 100 hours, whichever comes firsL Gap should be sot at
0.030 inch (Fig21).
1 5. Adjust V_dvee on Engine
After approximately 200 hours of operation, the engine
valves will require adjustment, It is suggested that a
Sears Service Center do this work° Correct settings are:
Intake - _002, Exhaust- o004_
Loading ...
Loading ...
Loading ...