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SERVICE AND ADJUSTMENTS
ENGINE
Maintenance, repair,orreplacement ofthe emission control
devices and systems, which are being done at the custom-
_=rsexpense, may be performed by any non-read engine
-epairestablishment orindMdual. Warranty repairsmustbe
oerforrnedby an authorized engine manufacturer's service
3utlet.
i"O ADJUST THRO'n'LE CONTROL CABLE
(See Fig. 31)
]he throttle control has been preset at the factory and
adjustment should notbe necessary. Chock adjustment as
descdbed below before loosening cable. If adjustment is
,_ecessary, proceed as follows:
Withengine notrunning,movethrettle controlleverfrom
slowto choke position. Slowly moveleverfrem choke to
fast position.
Check to see if hole in throttle lever and hole in speed
control bracket are aligned.
Ifholes are not aligned, loosen cable clamp screw and
align the holes by inserting a pencil or a 1/4" drill bit
through both holes.
Pullthrottle cable upto remove slack and tighten cable
clamp screw. Remove alignment pencil or ddll bit.
TO ADJUST CARBURETOR (See Fig. 32)
]he carburetor has been preset at the factory and adjust-
ment should notbe necessary. However, minor adjustment
-nay be required to compensate for differences in fuel,
temperature, altitude or load. If the carburetor does need
_djustment, 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. Tuming the adjusting needles out (counter-
clockwise) increases the supply offuel tothe engine giving
a dcher 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
9quipped with an idle fuel adjusting needle with a limiter cap,
which allows some adjustment within the limits allowed by
thecap. Do not attempt to remove the limiter cap. The limiter
cap cannot be removed without breaking the adjusting
needle.
• Be sure you have aclean air fiifer and the threttle contrel
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 sDeed settino - With throttle control lever in slow
position, engine should idle at 1750 RPM. Ifengine idles
too slow orfast, turn idle speed adjusting screw inorout
until correct idle is attained.
• Idle fuel needle settine- With threttle controllever in slow
position, turn idle fuel adjustment needle in (clockwise)
until engine begins to die and then turn out (counter-
clockwise) until engine runs rough. Tum needleto a point
midway between those two positions.
Recheck idle speed. Readjust if necessary.
ACCELERATION TEST -
• Move throttle control lever from slow tofast position. If
engine hesitates ordies, turn idlefuel adjusting needle
out (counterclockwise) 1/8 tum. Repeat test and con-
tinue to adjust, if necessary, until engine accelerates
smoothly.
High speed stop isfactory adjusted. Do notadjust - 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.
CABLE
CLAMP_
SCREW
SPEED
BRACKET
THRO'I'rLE LEVER
FIG. 31
IDLE SPEED
ADJUSTING
SCREW
IDLE FUEL
ADJUSTING
NEEDLE
FIG. 32
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