MTD Yard-Man YM90BC - Manual (Page 16)

16
TROUBLESHOOTING
If further assistance is required, contact your authorized service dealer.
C A U S E A C T I O N
Air filter is plugged Replace or clean the air filter
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
C A U S E A C T I O N
Empty fuel tank Fill fuel tank with properly mixed fuel
Primer bulb wasn't pressed enough Press primer bulb fully and slowly 10 times
Engine is flooded Place blue choke lever in position 3, squeeze the trigger and
pull the starter rope
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Fouled spark plug Replace or clean the spark plug
Plugged spark arrestor Clean or replace spark arrestor
The outside temperature is below 40º F Place blue choke lever in position 3, pull the starter rope up to
10-15 times
The outside temperature is above 90º F Place blue choke lever in position 3, squeeze the throttle control
and pull the starter rope
C A U S E A C T I O N
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
Fouled spark plug Replace or clean the spark plug
Plugged spark arrestor Clean or replace spark arrestor
C A U S E A C T I O N
Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture
Improper carburetor adjustment Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
Cutting attachment bound with grass Stop the engine and clean the cutting attachment
Dirty air filter Clean or replace the air filter
Plugged spark arrestor Clean or replace spark arrestor
C A U S E A C T I O N
Cutting attachment bound with grass Stop the engine and clean cutting attachment
Cutting attachment out of line Refill with new line
Inner reel bound up Replace the inner reel
Cutting head dirty Clean inner reel and outer spool
Line welded Disassemble, remove the welded section and rewind
Line twisted when refilled Disassemble and rewind the line
Not enough line is exposed Push the bump knob and pull out line until 4 inches (102 mm) of
line is outside of the cutting attachment
C A U SE A C T I O N
Oil, cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head
ENGINE WILL NOT START
ENGINE WILL NOT IDLE
ENGINE WILL NOT ACCELERATE
ENGINE LACKS POWER OR STALLS WHEN CUTTING
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
CUTTING LINE ADVANCES UNCONTROLLABLY