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SERVICE AND A#JUSTMENTS
ENGBNE
TO
ADJUST
THROTTLE
CONTROL
CABLE
(See Fig. 31)
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 (1\1) position.
Slowly move
lever from choke (1\1) to fast (=_) position_
o
Check to see if hole in throttle lever and hole in speed
control bracket are aligned.
o
If holes are not aligned, loosen cable clamp screw and
align the holes by inserting a pencil or a 1/4" drill 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, 32)
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
IF NEEDLE
IS
TURNED
IN TOO TIGHT
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
limitercap cannot be removed without breaking the adjusting
needle°
Be sure you have a clean air filter and the throttle
control cable is adjusted properly (see above).
Start engine and allow to warm for five minutes. Make
adjustments with engine running and shift/motion control
lever in neutral (N) position_
Idle speed settinq - 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 settinq - With throttle control lever in
slow (,_)
position, turn idle fuel adjustment needle in
(clockwise) until engine begins to die and then turn out
(counterclockwise)
until engine runs rough. Turn needle
to a point midway between those two positions.
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
AUTHORIZED
SERVICE
CENTER/
DEPARTMENT,
WHICH
HAS PROPER
EQUIPMENT
AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS
CABLE
"_
CLAMP
SCREW_
THROTTLE
LEVER
FIG. 31
IDLE SPEED
ADJUSTING
IDLE FUEL
ADJUSTING
NEEDLE
FIG. 32
25
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