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I
SERVICE AND ADJUSTMENTS
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III
ENGINE
TO ADJUST
THROTTLE
CONTROL
CABLE
(See Fig. 32)
The throttle control has been preset at the factory and
adjustment should not be necessary° Check adjustment as
described betow before loosening cable
If adjustment is
necessary, proceed as follows:
=
With engine not running, move throttle control lever
from slow (_,)
to choke (N) position_ Slowly move
lever from choke (N) to fast (,_,) position.
°
Check to see if hole in throttle lever and hole in speed
control bracket are alignedo
.
If holes are not aligned, loosen cable clamp screw and
align the holes by inserting a pencil or a 1/4" ddfl bit
through both holes.
•
Pull throttle cable up to remove slack and tighten cable
clamp screw Remove alignment pencil or drill bit.
TO ADJUST
CARBURETOR
(See Fig. 33)
The carburetor has been preset at the factory and adjust-
ment should not be necessary.
However, minor adjust-
ment 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 (counter-
clockwise) 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 tF NEEDLE 1S
TURNED IN TOO TIGHT
PRELIMINARY
SETTING
-
Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above).
°
With engine off turn idle fuel adjusting needle in (clock-
wise) closing it finger tight and then turn out (counter-
clockwise) 1 turn.
FINAL SETTING -
•
Start engine and allow to warm for five minutes. Make
final adjustments with engine running and shift!motion
control lever in neutral (N) position.
•
Idle speed setting - With throttle control lever in slow
('_.)
position, engine should idle at 1750 RPM.
If
engine idles too slow or fast, turn idle speed adjusting
screw in or out until correct idle is attained.
•
Idle fuel needle setting - With throttle control lever in
slow (,,_)
position, turn idle fuel adjusting needle in
(clockwise) until engine begins to die and then turn out
(counterclockwise)
approximately
1/8 to 1/4 turn to
obtain best low speed performance°
-
Recheck idle speed. Readjust if necessary.
ACCELERATION
TEST
-
•
Move throttle
control
lever from slow (,,_)
to fast (,_)
position°
If engine
hesitates
or dies,
turn
idle fuel
adjusting
needle
out (counterclockwise)
1/8 turn.
Re-
peat
test and continue
to adjust,
if necessary,
until
engine
accelerates
smoothly.
High
speed
stop
is factory
adjusted.
Do not adjust
-
damage
may resulL
IMPORTANT:
NEVER
TAMPER
WITH
THE
ENGINE
GOVERNOR,
WHICH
IS FACTORY
SET FOR PROPER
ENGINE SPEED
OVERSPEEDINGTHEENGINEABOVE
THE
FACTORY
HIGH
SPEED
SETTING
CAN
BE
DANGEROUS.
IF YOU THINK THE ENGINE-GOVERNED
HIGH
SPEED
NEEDS
ADJUSTING,
CONTACT
YOUR
NEAREST
AUTHORfZED
SERVICE
CENTER/
DEPARTMENT,
WHICH
HAS PROPER
EQUIPMENT
AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS,
CABLE
CLAMP
SCREW
SPEED CONTROL
BRACKET_
LEVER
FIG. 32
IDLE SPEED
ADJUSTING
SCREW
IDLE FUEL
ADJUSTING
NEEDLE
FIG. 33
26
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