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ENGINE
Maintenance, repair, or replacement of the
emission control devices and systems, which
are being done at the customers expense,
may be performed by any non-road engine
repair establishment or individual. Warranty
repairs must be performed by an authorized
engine manufacturer's service outlet.
TO ADJUSTTHROTTLE
CONTROL
CABLE
The throttle control has been preset at the
factory and adjustment
should not be nec-
essary. Check adjustment as described
below before loosening cable. If adjust-
ment is necessary, proceed as follows:
1. With engine not running, move throttle
control lever from slow to choke posi-
tion. Slowly move lever from choke to
fast position.
2. Check that holes "A" in governor
control lever and hole in governor plate
line-up.
If holes "A" are not aligned,
loosen clamp screw and move throttle
cable until holes are aligned.
Tighten
clamp screw securely.
Governor
Governor
Lever
Plate
\
\
Holes "A"
Throttle
Screw
Cable
TO ADJUST CARBURETOR
NOTE: The carburetor on this engine is
low emission. It is equipped with an idle
fuel adjusting needle with a limiter cap,
which allows some adjustment within the
limits allowed by the cap. Do not attempt
to remove the limiter cap. The limiter cap
cannot be removed without breaking the
adjusting needle.
The carburetor has been preset at the
factory and adjustment should not be nec-
essary. However, minor adjustment may
be required to compensate for differences
in fuel, temperature, altitude or load. If the
carburetor does need adjustment, proceed
as follows:
In general, turning idle mixture valve in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Turning the idle mixture valve out (counter-
clockwise) increases the supply of fuel to
the engine giving a richer fuel/air mixture.
IMPORTANT:
Damage to the needle
valve and the seat in carburetor
may result
if screw is turned in too tight.
PRELIMINARY
SETTING -
1. Air cleaner assembly
must be assem-
bled to the carburetor when making
carburetor adjustments.
2. Be sure the throttle control cable is
adjusted properly (see above).
FINAL
SETTING
-
1. Start engine and allow to warm for five
minutes.
Make final adjustments
with
engine running and shift/motion
control
lever in neutral (N) position.
2. Move throttle control lever to slow posi-
tion. With finger, rotate and hold throttle
lever against idle speed screw. Turn
idle speed screw to attain 1750 RPM.
3. While still holding throttle lever against
idle speed screw, turn idle mixture
valve full travel clockwise then coun-
terclockwise
until engine runs rough.
Turn valve to a point midway between
those two positions.
Release throttle
lever.
ACCELERATION
TEST -
4. Move throttle control lever from slow
to fast position.
If engine hesitates or
dies, turn idle mixture valve out (coun-
terclockwise)
1/8 turn. Repeat test and
continue to adjust, if necessary, until
engine accelerates
smoothly.
High speed stop is factory adjusted.
Do
not adjust - damage may result.
IMPORTANT:
Never tamper with the
engine governor, which is factory set
for proper engine speed.
Overspeed-
ing the engine above the factory high
speed setting can be dangerous.
If you
think the engine-governed
high speed
needs adjusting, contact a Sears or other
qualified service center, which has proper
equipment
and experience
to make any
necessary adjustments.
_/eeSwPe__=.
_
_
jJhrottle
!i
_
Lever
Idle M_
_
With Limiter
26
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