Craftsman 247.346250 - Manual (Page 17)

NOTE: A dirty air cleaner will cause engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor. Do not
make unnecessary adjustments. Factory settings are
satisfactory for most applications and conditions.
Never attempt to change maximum engine speed. It is
pre-set at the factory and should be changed only by
a qualified service technician who has the necessary
equipment.
The carburetor may need re-adjusting if engine lacks
power or does not idle properly. If adjustments are
needed, proceed as follows,
• Close idle mixture valve (see figure 21) clockwise
() finger tight only. Forcing may cause damage.
Then open 1 -1/2 turns counterclockwise ().
• Start engine and allow to warm for five minutes.
• Move throttle control lever to IDLE position.
•
Rotate throttle counterclockwise (^ ) and hold
against idle speed adjusting screw. Turn idle speed
adjusting screw until engine is running at 1750
RPM.
• Turn idle mixture valve clockwise ) (lean mix­
ture) until engine JUST starts to slow. Then turn it
counterclockwise (^) (rich mixture) until engine
starts to run unevenly. Set at midpoint between rich
and lean mixture.
• Recheck idle RPM and readjust if necessary.
•
Move throttle control lever to FAST position.
Engine should accelerate without hesitation or
sputtering. If it does not, carburetor should be read­
justed, usually to a slightly richer mixture.
ENGINE SPEED
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 log splitter to the
nearest SEARS Service Center for repair and adjust­
ment.
TIRES
Recommended operating tire pressure is 12 to 15
p.s.i. (sidewall of tire may give tire manufacturer's rec­
ommended pressure). Maximum tire pressure under
any circumstances is 30 p.s.i. Equal tire pressure
should be maintained on all tires.
When installing a tire to the rim, be certain rim is
clean and free of rust. Lubricate both the tire and rim
generously. Never Inflate to over 30 p.s.i. to seat
beads.
A WARNING: EXCESSIVE PRESSURE
(OVER 30 p,s.{.) WHEN SEATING BEADS
MAY CAUSE TIRE/RIM ASSEMBLY TO
BURST WITH FORCE SUFFICIENT TO
CAUSE SERIOUS INJURY.
FIGURE 21.
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