Table of Contents
Advertisement
4.
Reassemble
air cleaner.
Closed for Full
TO ADJUST CARBURETOR
The carburetor
has been present
at the
factory
and adjustment
should
not be
necessary.
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
the adjusting
needles
in (clockwise)
decreases
the supply
of
fuel to the engine giving
a leaner fuel/air
mixture. Turning
the adjusting
needles
out
(counterclockwise)
increases
the supply
of fuel to the engine giving a richer fuel/
air mixture.
IMPORTANT:
Damage
to the needles
and the seats in carburetor
may result if
screw is turned in too tight.
PRELIMINARY
SE'I-rlNG
-
1. Be sure you have a clean air filter, and
the throttle
control cable
is adjusted
properly
(see "TO ADJUST
THROTTLE
CONTROL
CABLE"
in the
Service
and Adjustments
section
of
this manual).
2. With engine off turn idle fuel adjusting
needle in (clockwise)
closing
it finger
tight and then turn out (counterclock-
wise) 1 turn.
FINAL SEI-rlNG
-
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.
NOTE:
The high idle is set at the factory
and cannot
be adjusted.
2.
Idle speed setting - With throttle
control
lever in slow
position,
engine
should
idle at 1200 RPM. If engine
idles too slow or fast, turn idle speed
adjusting
screw in or out until correct
idle is attained.
3.
Idle fuel needle setting - With throttle
control
lever in slow position,
turn idle
fuel adjusting
needle in (clockwise)
until engine
speed
decreases
and
then turn out (counterclockwise)
approximately
3/4 turn to obtain the
best low speed
performance.
4.
Recheck
idle speed.
Readjust
if
necessary.
ACCELERATION
TEST -
5.
Move throttle
control lever from slow to
fast position.
If engine hesitates
or
dies, turn idle fuel adjusting
needle
out (counterclockwise)
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.
Overspeeding
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 equip-
ment and experience
to make any
necessary
adjustments.
28
Hide quick links:
Advertisement
Table of Contents
