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SERVICE AND ADJUST
ENTS
ENGgNE
TO ADJUST
THROTTLE
CONTROL
CABLE
(See Fig, 33)
The throttle control has been preset at the factory and
adjustment should not be necessary. Check adjustment as
described below before loosening cable. If adjustment is
necessary, proceed as follows:
o
With engine not running, move throttle control lever
from slow to choke position
Slowly move lever from
choke to fast position.
=
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
CONTROL
LEVER
CONTROL
PLATE
\
\
HOLES "A"
CLAMP
THROTTLE
SCREW
CABLE
FIG. 33
TO ADJUST
CARBURETOR
(See Fig. 34)
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 at-
lowed by the cap_ Do not attempt to remove the firnitercap_
The limiter cap cannot be removed without breaking the
adjusting needle
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 idle mixture valve in (clockwise) de-
creases 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
iFSCREW
lS
TURNED
iN TOO TIGHT
PRELIMINARY
SETTING -
•
Air cleaner assembly must be assembled to the car bu-
retor when making carburetor adjustments=
o
Be sure the throttle control cable is adjusted properly
(see above).
FINAL SETTING -
.
Start engine and allow to warrn for five minutes. Make
final adjustments with engine running and shift/motion
control lever' in neutral (N) position.
•
Move throttle control lever to slow position_ With finger,
rotate and hold throttle lever against idle speed screw.,
Turn idle speed screw to attain 1750 RPM.
°
While stitl holding throttle lever' against idle speed
screw, turn idle mixture valve full travel clockwise then
counterclockwise
until engine runs rough. Turn valve
to a point midway between those two positions.
Re-
lease throttle lever
ACCELERATION
TEST -
=
Move throttle control
lever from slow to fast position.
If
engine
hesitates
or dies, turn idle mixture
valve out
(counterclockwise)
t/8 turn.
Repeat test and continue
to adjust,
if necessary,
until
engine
accelerates
smoothlyv
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
YOUR
NEAREST
AUTHORIZED
SERVICE
CENTER/
DEPARTMENT,
WHICH
HAS PROPER
EQUIPMENT
AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS.
IDLE SPEED
THROTTLE
SCREW
LEVER
IDLE MIXTURE
VALVE WITH
LIMITER
FIG. 34
26
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