Troy-Bilt TB2450 Lawn Mower User Manual


 
Problem Cause Remedy
Engine fails to start 
2.
Spark plug wire(s) disconnected. 3.
Throttle/Choke control lever not in correct 
starting position.
Choke not activated 5.
Fuel tank empty, or stale fuel. 
Blocked fuel line. 7.
Faulty spark plug(s). 8.
Engine flooded. 

Engage parking brake. 2.
Connect wire(s) to spark plug(s). 3.

position.
5.
the choke on position.
Fill tank with clean, fresh (less than 30 days 
old) gas.
Clean fuel line and replace fuel filter. 7.
Clean, adjust gap or replace plug(s). 8.
Crank engine with throttle in FAST position. 
Engine runs erratic  
Spark plug wire(s) loose. 2.
Blocked fuel line or stale fuel. 3.
Vent in gas cap plugged. 
Water or dirt in fuel system. 5.
Dirty air cleaner. 
Move the Throttle/Choke control lever into 
the choke off position.
Connect spark plug wire(s). 2.
Clean fuel line; fill tank with clean, fresh 3.
gasoline and replace fuel filter.
Clear vent or replace cap if damaged. 
Drain fuel tank. Refill with clean, fresh 5.
gasoline.
Replace air cleaner paper element or clean 
foam precleaner.
Engine overheats Engine oil level low. 
Air flow restricted. 2.
Fill crankcase with proper amount and 
weight of oil.
Clean grass clippings and debris from around 2.

Engine hesitates at high

Spark plug(s) gap too close.  Remove spark plug(s) and reset the gap. 
Engine Idles rough Spark plug(s) fouled, faulty or gap too wide. 
Dirty air cleaner. 2.
Replace spark plug(s). Set plug gap. 
Replace air cleaner element and/or clean 2.
pre-cleaner.
Excessive vibration Cutting blade loose or unbalanced. 
Damaged or bent cutting blade. 2.
Tighten blade and spindle. 
Replace blade. 2.
Mower will not mulch grass Engine speed too low. 
Wet grass. 2.
Excessively high grass. 3.
Dull blade. 

Do not mulch when grass is wet. 2.
Mow once at a high cutting height, then 3.
mow again at desired height or make a
narrower cutting swath.
Sharpen or replace blade. 
Uneven cut Deck not leveled properly. 
Dull blade. 2.
Uneven tire pressure. 3.

Sharpen or replace blade. 2.
Check tire pressure in all four tires. 3.
Troubleshooting
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