Troy-Bilt 769-06304 Lawn Mower User Manual


 
Problem Cause Remedy
Engine fails to start  
Spark plug wire disconnected.2.
Fuel tank empty, or stale fuel. 3.
Choke not activated.
Faulty spark plug.5.
Blocked fuel line.
Engine flooded.7.
8.
Throttle control lever not in correct starting 
position.

position.
Connect wire to spark plug. 2.
Fill tank with clean, fresh (less than 30 days 3.
old) gas.

Clean, adjust gap or replace plug. 5.
Clean fuel line and replace fuel filter. 
Crank engine with throttle in FAST position.7.
Engage parking brake. 8.

Engine runs erratic  
Spark plug wires loose. 2.
Blocked fuel line or stale fuel. 3.
Vent in gas cap plugged. 
Water or dirt in fuel system. 5.
Dirty air cleaner. 

position.
Connect and tighten spark plug wire. 2.
Clean fuel line; fill tank with clean, fresh 3.
gasoline and replace fuel filter, is so equipped.
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, is so equipped.
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 gap too close.  Remove spark plug and reset the gap. 
Engine Idles rough Spark plug fouled, faulty or gap too wide. 
Dirty air cleaner. 2.
Replace spark plug. Set plug gap. 
Replace air cleaner element and/or clean 2.
pre-cleaner, if so equipped.
Excessive vibration Cutting blade loose or unbalanced. 
Damaged or bent cutting blade. 2.
Tighten blade and spindle. Balance blade.
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
8
27