Troubleshooting - Yard Machines MTD1425NAV Operator's Manual

UNIT WON'T START OR STARTS BUT WILL NOT RUN
C A U S E
Incorrect starting procedures
Incorrect carburetor mixture adjustment setting
Fouled spark plug
UNIT STARTS, BUT ENGINE HAS LOW POWER
C A U S E
Fuel filter is plugged
Incorrect lever position
Dirty spark arrester screen
Dirty air filter
Incorrect carburetor mixture adjustment setting
ENGINE HESITATES
C A U S E
Incorrect carburetor mixture adjustment setting
NO POWER UNDER LOAD
C A U S E
Incorrect carburetor mixture adjustment setting
RUNS ERATICALLY
C A U S E
Incorrectly gapped spark plug
SMOKES EXCESSIVELY
C A U SE
Incorrect carburetor mixture adjustment setting
Incorrect fuel mixture
If further assistance is required, contact your authorized service dealer.

TROUBLESHOOTING

Call 1-800-345-8746 for more information.
A C T I O N
Follow instructions in the Starting/Stopping section
Have carburetor adjusted by Authorized Service Center
Clean / gap or replace plug
A C T I O N
Replace the fuel filter
Move to RUN position
Replace spark arrester screen.
Remove, clean and reinstall filter.
Have carburetor adjusted by Authorized Service Center
A C T I O N
Have carburetor adjusted by Authorized Service Center
A C T I O N
Have carburetor adjusted by Authorized Service Center
A C T I O N
Clean / gap or replace plug
A C T I O N
Have carburetor adjusted by Authorized Service Center
Use properly mixed fuel (40:1 mixture)
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