Troubleshooting Guide
8
Problem
Possible Cause(s)
Corrective Action
Troubleshooting
Guide
Engine fails to start
Dirty air cleaner
Refer to the Engine Manual packed with your unit.
Push primer bulb two or three times.
Engine needs to be primed
Fuel tank empty
Fill tank with clean, fresh gasoline.
Stale fuel in gasoline tank
Spark plug wire disconnected.
Spark plug fouled
Drain gasoline and refill tank with clean, fresh gasoline.
Connect the spark plug wire to the spark plug.
Clean, adjust gap or replace spark plug.
Engine flooded
Refer to the Engine Manual packed with your unit.
Engine runs erratic
Engine Overheats
Spark plug wire loose
Connect and tighten spark plug wire.
Stale fuel in gasoline tank
Vent in gas cap plugged
Water or dirt in fuel system
Dirty air cleaner
Drain gasoline & refill tank with clean, fresh gasoline.
Clear vent of any debris.
Drain fuel tank. Refill with fresh fuel.
Refer to the Engine Manual packed with your unit.
Refer to the Engine Manual packed with your unit.
For parts and/or
accessories please
call 1-330-220-4683,
or 1-800-800-7310
Carburetor out of adjustment
Engine oil level low
Air flow restricted
Fill crankcase with proper oil.
Clean the area around the engine’s cooling fins.
Replace the engine’s air filter.
Dirty air filter
or visit
Carburetor not adjusted properly
Refer to the Engine Manual packed with your unit.
www.mtdproducts.
com
Excessive Vibration
Drivebelt Slips
Edger blade bent or damaged
Blade spindle bent or damaged
Replace edger blade.
Contact an authorized MTD service dealer.
Belt worn or stretched
Replace drive belt.
NOTE: Specifications are
subject to change without
notification or obligation.
Images my not reflect your
exact model and are for
reference purposes only.
13
| Categories | Lawn Mower Manual, MTD Lawn Mower Manuals, Troy-Bilt Lawn Mower Manuals |
|---|---|
| Tags | MTD 521, Troy-Bilt 521 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Lawn Mower |
| Product Type | Walk Behind Mower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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