ENGINE
Maintenance,repair, or replacement of the emission control devices and systems, which are being done at the customers expense, may be performed by any non- road engine repair establishment or indi- vidual. Warranty repairs must be per-
formed by an authorized engine manufac- turer's service outleL
TO ADJUST THROTTLE CONTROL
CABLE
The throttle control has been preset at the factory and adjustment should not be nec- essary. Check adjustment as described below before loosening cable. If adjust- ment is necessary, proceed as follows:
•With engine not running, move throttle control lever from slow to choke posi- tion. Slowly move lever from choke to fast position.
•Check to see if hole in throttle lever and hole in speed control bracket are aligned.
•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
The carburetor has been preset at the fac- tory and adjustment should not be neces- sary. 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:
tn 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 nee- dle is turned in too tight.
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 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 at- tained.
o Idle fuel needle setting - 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 neces- sary.
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. 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 set- ting can be dangerous° if you think the
i
Speed Cont_
NOTE; The carburetor on this engine is low emission. It is equipped with an idle fuel adjusting needle with a timiter cap, which allows some adjustment within the
limits allowed by the cap. Do not attempt to remove the limiter cap_ The limiter cap cannot be removed without breaking the
idle Speed
Adjusting Screw
Idle Fuel
Throttle Lever
adjusting needle°
°Be sure you have a clean air filter and
Adjusting
Needle
26
