Troubleshooting Chart - MTD Pro MP425 Manual Del Operador

ENGINE WILL NOT START
C A U S E
Empty fuel tank
Primer bulb wasn't pressed enough
Old fuel
Fouled spark plug
Plugged spark arrestor
When it is above 40°F outside & the Cold Weather Start
Lever is in the CLOSED / START position
When it is below 40°F outside & the Cold Weather Start
Lever is in the RUN / OPEN position
ENGINE WILL NOT IDLE
C A U S E
Air filter is plugged
Old fuel
Improper carburetor adjustment
ENGINE WILL NOT ACCELERATE
C A U S E
Old fuel
Improper carburetor adjustment
Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor
ENGINE LACKS POWER OR STALLS WHEN CUTTING
C A U S E
Old fuel
Improper carburetor adjustment
Fouled spark plug
Plugged spark arrestor
If further assistance is required, contact your authorized service dealer.
TROUBLESHOOTING
Fill fuel tank with new fuel
Press primer bulb fully and slowly 10 times
Drain gas tank and add fresh fuel
Replace or clean the spark plug
Clean or replace spark arrestor
Flip the Cold Weather Start Lever to RUN / OPEN
Flip the Cold Weather Start Lever to CLOSED / START
and follow the Starting Instructions
Replace or clean the air filter
Drain gas tank and add fresh fuel
Adjust carburetor
Drain gas tank and add fresh fuel
Take to an authorized service dealer for adjustment
Stop the engine and clean the cutting attachment
Clean or replace the air filter
Clean or replace spark arrestor
Drain gas tank and add fresh fuel
Take to an authorized service dealer for adjustment
Replace or clean the spark plug
Clean or replace spark arrestor
A C T I O N
A C T I O N
A C T I O N
A C T I O N
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