Troubleshooting - Sears 143.999 Operator's Manual

TROUBLESHOOTING
THE FOLLOWING MAY HELP AVOID A DELAY IN YOUR WORK OR
SAVE THE EXPENSE OF A SERVICE CALL.
ENGINE FALLS TO START OR STARTS WITH DIFFICULTY
CAUSE REMEDY
Controls not in start position.
Spark plug wire disconnected from spark plug.
Spark plugfouled.
Spark plugporcelaincracked.
Insufficient f uel.
Water or dirtIn fuel.
Impropercarburetoradjustment
Move ENGINE CONTROL or equipment control to "HI" or
START postion, See "STARTING" instructions in this
manual.
Connect SPARK PLUG WIRE to SPARK PLUG.
Remove SPARK PLUG and clean it. See "SPARK
PLUG"instructions in "MAINTENANCE"sectionin this
manual.
Installnew sparkplug.
Fill FUEL TANK per "BEFORE STARTING" instructions.
Drain FUEL TANK and re-fillwith clean,fresh gasoline.
See "BEFORE STARTING" instructions in this manual.
Adjustcarburetor(if applicable). See "ADJUSTMENTS"
sectionin this manual.
ENGINE LACKS POWER
CAUSE
Dirtyair cleaner.
Impropercarburetor adjustment.
Lack of lubdcaiton.
REMEDY
Replace or clean air cleaner per "AIR CLEANER"
instructions in "MAINTENANCE" section in this manual.
Adjustcarburetor(ifapplicable). See "ADJUSTMENTS'
sectionin this manual.
Fill oil sump to proper level. See "BEFORE STARTING"
instructions section in this manual,
ENGINE MISSES UNDER LOAD
CAUSE
Spark plug fouled.
Spark plugpomelain cracked.
Improperspark plug gap.
Impropercarburetoradjustment
REMEDY
Remove SPARK PLUG and clean it. See "SPARK
PLUG" instructions in "MAINTENANCE' section in this
manual.
In_allnew SPARK PLUG.
Regap SPARK PLUG electrodes. See "SPARK PLUG"
instructions in "MAINTENANCE" section in this manual.
Adjust carburetor (if applicable). See "ADJUSTMENTS"
section in this manual.
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