Power smart PSM2521SH, Instruction Manual

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20
TROUBLESHOOTING
Problem Cause Solution
Engine fails to start
Engine start/stop lever
disengaged.
Engage engine start/stop lever.
Spark plug wire disconnected. Connect spark plug wire.
Fuel tank empty or stale fuel. Fill tank with clean, fresh gasoline.
Engine not primed. Press primer bulb.
Faulty spark plug. Clean, adjust gap, or replace.
Blocked fuel line. Clean fuel line.
Engine flooded.
Wait a few minutes to restart, do not
prime.
Engine runs erratic.
Spark plug wire loose. Connect and tighten spark plug wire.
Blocked fuel line or stale fuel.
Clean fuel line. Fill tank with clean, fresh
gasoline. Drain carburetor bowl.
Water or dirt in fuel system. Drain fuel tank. Refill with fresh fuel.
Dirty air filter Clean or replace the filter.
Engine overheats.
Engine oil level low. Fill crankcase with proper oil.
Air flow restricted. Clean area around and on top of engine.
Idles poorly.
Spark plug fouled, faulty, or
gap too wide.
Reset gap or replace spark plug.
Dirty air cleaner. Clean or replace the filter.
Excessive
vibration/noise
Blade loose or unbalanced. Tighten and balance blade.
Bent/damaged blade. Replace the blade.
Mower will not mulch
grass.
Wet grass.
Do not mow when grass is wet, wait until
dry to cut.
Uneven cut.
Excessively high grass.
Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
Dull blade. Sharpen or replace blade.