Problem
Cause
Remedy
Engine fails to start
PTO/Blade Engage knob engaged.
1.
Parking brake not engaged.
2.
Spark plug wire(s) disconnected.
3.
Throttle/Choke control lever not in correct
4.
starting position.
Choke not activated
5.
Fuel tank empty, or stale fuel.
6.
Blocked fuel line.
7.
Faulty spark plug(s).
8.
Engine flooded.
9.
Place knob in disengaged (OFF) position.
1.
Engage parking brake.
2.
Connect wire(s) to spark plug(s).
3.
Place Throttle/Choke control lever to FAST
4.
position.
Place the Throttle/Choke control lever into
5.
the choke on position.
Fill tank with clean, fresh (less than 30 days
6.
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.
9.
Engine runs erratic
Tractor running with CHOKE activated.
1.
Spark plug wire(s) loose.
2.
Blocked fuel line or stale fuel.
3.
Vent in gas cap plugged.
4.
Water or dirt in fuel system.
5.
Dirty air cleaner.
6.
Move the Throttle/Choke control lever into
1.
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.
4.
Drain fuel tank. Refill with clean, fresh
5.
gasoline.
Replace air cleaner paper element or clean
6.
foam precleaner.
Engine overheats
Engine oil level low.
1.
Air flow restricted.
2.
Fill crankcase with proper amount and
1.
weight of oil.
Clean grass clippings and debris from around
2.
the engine’s cooling fins and blower housing.
Engine hesitates at high
RPM
Spark plug(s) gap too close.
1.
Remove spark plug(s) and reset the gap.
1.
Engine Idles rough
Spark plug(s) fouled, faulty or gap too wide.
1.
Dirty air cleaner.
2.
Replace spark plug(s). Set plug gap.
1.
Replace air cleaner element and/or clean
2.
pre-cleaner.
Excessive vibration
Cutting blade loose or unbalanced.
1.
Damaged or bent cutting blade.
2.
Tighten blade and spindle.
1.
Replace blade.
2.
Mower will not mulch grass
Engine speed too low.
1.
Wet grass.
2.
Excessively high grass.
3.
Dull blade.
4.
Place throttle in FAST (rabbit) position.
1.
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.
4.
Uneven cut
Deck not leveled properly.
1.
Dull blade.
2.
Uneven tire pressure.
3.
Perform side-to-side deck adjustment.
1.
Sharpen or replace blade.
2.
Check tire pressure in all four tires.
3.
Troubleshooting
8
29
Summary of Contents for TB2450
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