Carburetor Adjustment - Craftsman 247.886700 Owner's Manual

CARBURETOR ADJUSTMENT
WA RN iNG4_'4_'e'_' t
If any adjustments are made to the
engine while the engine is running
(e.g., carburetor), keep clear of all
moving parts. Be carefuZ of heated
surfaces and muffler.
The carburetor has been pre-set at the factory and
should not require adjustment. However, if the car-
buretor needs adjustment, proceed as follows. See
figure 29.
1. Close high speed adjusting screw by hand. Do not
overtighten. Then open it 1 114 to 1 !t2 turns.
2. Close idle adlusting screw by hand. Do not over-
tighten. Then open it 1 1/4 to 1 1/2 turns.
3. Start the engine, and allow it to warm up.
4, Set the throttle control to FAST. Adjust high speed
adjusting screw in or out until the engine runs
smoothly at full throttle. If the engine has a tenden-
cy to stall under load, open high speed adjusting
screw slightly to obtain a richer fuel mixture.
5. Set the throttle control to SLOW. Adjust idle a0-
justing screw in or out until the engine runs
smoothly at idle.
Allow the engine to run undisturbed for a few seconds
between each new setting so that the engine can react
to each setting.
WARNING
Never tamper with the engine governor,
which is set at the factory for proper
engine speed. Overspeeding the engine
above factory high speed setting is
dangerous. If you think the engine
governed high speed needs adjusting,
contact your nearest SEARS Service
Center, who has the proper equipment
and experience to make any necessary
adjustments.
_,,...--. High*Speed Adjustment Needle
(Close Finger Tight Only)
FIGURE 29.
16