Craftsman 917.272054 owner manual Engine, Adjustin

ENGINE

Maintenance, repair, or replacement of the emission control devices and sys- tems, which are being done at the customers expense, may be performed by any non-road engine repair establish- ment or individual. Warranty repairs must be performed by an authorized engine manufacturer'seawice outlet.

TO ADJUST THROTTLE CONTROL CABLE

The throttle control has been preset at the factory and adjustment should not be necessary. Check adjustment as de- scribed below before loosening cable. If

adjustment is necessary, proceed as fotiows:

1.With engine not running, move throttle control lever from slow to choke

position. 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.

Remove alignment pencil or drill bit,

TO ADJUST CARBURETOR

The carburetor has been preset at the factory and adjustment should not be necessary. 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 (dockwise) 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 youhavea dean air filterand the throttlecontrolcable is adjustedproperly (see above).

2.Startengtheand allewto warmfor five

minutes.Make acrjuslmentswith engine

runningand sh_lten conb'oleverIn neutral(N) position.

3.Idlesl_d ssttina - "W_ththrotaecontrol

leverin stow posilien,enginesbeuididle at 1750 RPM. If engineidlestoo slowor fust, tam idlespeed adjustingscrewin or

out unf_correctl idleis attained.

4.Idlefuel needlesettina- WiththmttJe ccoifd lever in slowpesilion, turnidle fuel acjustmentneedle In (clockwise)until engine beginsto d'=eandthen turnout (counterclockwise) untilengine runs rough. Turn needleto a pointmidway betweenthose two pesi_ons.

5.Recheck idlespeed. Readjustif neces- sary.

ACCELERATIONTEST -

6.Movethrottlecontrolleverfrom slowto fastpeail_. If enginehesitatesor dies, turn idlefuelaclustingneedleout

(counterdGd_dse)1/8 turn.Repeat test and continueto adjust, if necessary,un_l

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 setting can be dangerous. If you think the

engine-govemed 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

IdleSpeed

Screw

Adjustin_

Idle Fuel

Needle

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