YARDMAX YG1650 Troubleshooting

Problem
Engine fails to start
Hard to start or
blowing white smoke
Engine runs erratic
Engine overheats
Idles poorly
Excessive vibration
Mower will not mulch
grass
Uneven cut
Grass catcher
not filling
TROUBLESHOOTING
Cause
1. Blade control disengaged.
2. Spark plug boot disconnected.
3. Fuel tank empty or stale fuel.
4. Engine not primed (If equipped with
primer).
5. Faulty spark plug.
6. Engine flooded.
Air filter, carburetor and spark plug
polluted by oil and gas spilled from
tipping on the incorrect side.
1. Spark plug boot loose.
2. Stale fuel.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Blocked fuel line.
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug fouled, faulty, or gap too
wide.
2. Dirty air cleaner.
1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
1. Wet grass.
2. Excessively high grass.
3. Dull blade.
1. Buildup of grass, leaves and debris
under mower.
2. Dull blade.
1. Cutting height too low.
2. Worn blade.
3. Catcher not venting air.
Walk-Behind Lawn Mower
Remedy
1. Engage blade control.
2. Connect wire to spark plug boot.
3. Fill tank with clean, fresh gasoline.
4. Prime engine as instructed in the
Operation section of the Engine Manual.
5. Clean, adjust gap, or replace.
6. Wait a few minutes to restart.
Replace air filter. Clean carburetor and
spark plug.
1. Connect and tighten spark plug boot.
2. Fill tank with clean, fresh gasoline.
3. Clear vent.
4. Run engine until it stops from lack of fuel.
Refill with fresh fuel.
5. Refer to Air Cleaner Maintenance
Engine Manual.
6. Contact your Parts & Repair Center to
have fuel line cleaned.
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
1. Reset gap or replace spark plug.
2. Refer to Air Cleaner Maintenance
Engine Manual.
1. Tighten blade and adapter. Balance blade.
2. Replace blade.
1. Do not mow when grass is wet; wait until
dry to cut.
2. Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
3. Sharpen or replace blade.
1. Clean underside of mower housing.
2. Sharpen or replace blade.
1. Raise height of cut.
2. Replace the blade.
3. Clean / inspect grasscatcher.
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