Craftsman 917.273180 manual Engine, To Adjustthroifle Control Cable, To Adjust Carburetor

ENGINE

Maintenance, repair, or replacement of the emission control devices and systems, which are being done at the customers ex- pense, may be performed by any non-road engine repair establishment or individual. Warranty repairs must be performed by an authorized engine manufacturer's service outlet.

TO ADJUSTTHRO'I'FLE 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:

1.With engine not running, move throttle control lever from slow to choke posi- tion. Slowly move lever from choke to fast position.

2.Check to see if hole in throttle lever and hole in speed control bracket are aligned.

3.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.

4.Pull throttle cable up to remove slack and tighten cable clamp screw. Re-

move alignment pencil or drill bit.

TO ADJUST CARBURETOR
The carburetor has been preset at the
factory and adjustment should not be nec-
essary. 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:
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
(counterclockwise) increases the supply
of fuel to the engine giving a richer fuel/air
mixture.
IMPORTANT: Damage to the needles and
seats in carburetor may result if 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 limiter cap
cannot be removed without breaking the
adjusting needle.
1. Be sure you have a clean air filter and
the throttle control cable is adjusted
properly (see above).	27

2.Start engine and allow to warm for five minutes. Make adjustments with engine running and shift/motion control lever in neutral (N) position.

3.Idle speed settina - 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.

4.	in	- 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.

5.Recheck idle speed. Readjust if nec- essary.

ACCELERATION TEST -

6.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 neces-

sary, 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. Overspeed- ing the engine above the factory high speed setting can be dangerous. If you think the engine-governed high speed needs adjusting, contact a Sears or other qualified service center, which has proper equipment and experience to make any necessary adjustments.

Cable

Clamp

Screw

Speed Control

Bracket

Throttlu L

Idle Speed
Adjusting_T____
Sorewtl
Idle Fuel	_	_----_1
Adjusting------"_ I_		I cJfn'II.

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