Craftsman 247.799891, 247.799892, 247.799890 Enginespeed, Throttle Idle Speed Ustin, Needle Valve

The carburetor may need re-adjusting if engine lacks power or does not idle properly. If adjustments are needed, proceed as follows.

•Close needle valve (see figure 17) clockwise (F_) finger tight only. Forcing may cause damage. Then open 1-1/2 turns counterclockwise (f").

•Start engine and allow to warm for five minutes.

•With throttle in FAST position, close needle valve

clockwise (_) until engine starts to lose speed (lean mixture). Then slowly open needle valve counterclockwise (v-_) until engine JUST BEGINS to run unevenly. This mixture should be rich enough for best performance under load.

•Place throttle control in IDLE position.

If engine idles, no further adjustment is necessary. If engine idles too fast, turn idle speed adjusting

screw counterclockwise (_'_) until slower speed is obtained.

If engine dies, turn idle speed adjusting screw 1/4 turn clockwise (,'-_). Place throttle control in FAST position and restart engine.

Move throttle control to IDLE position. If engine does not idle, repeat third step.

•Test the engine by using the chipper-shredder. If engine tends to stall or die out, it usually indicates that the mixture is slightly lean and it may be nec- essary to open (r--_) the needle valve slightly to provide a richer mixture. This richer mixture may cause a slight unevenness in idling.

Throttle

Idle Speed

ustin_

Throttle

Needle Valve

FIGURE 17.

ENGINESPEED

Your engine speed has been factory set. Do not attempt to increase engine speed or it may result in personal injury. If you believe the engine is running too fast or too slow, take your chipper-shredder to the nearest SEARS Service Center for repair and adjust- ment.

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