Troubleshooting - Yard-Man 21A-144R401 Operator's Manual

• Wipe equipment with a oiled rag to prevent rust.
• Never store the unit with fuel in the tank where
fumes may reach an open flame or spark.
Engine
If the unit will be stored for longer than 60 days:
• Drain all gasoline from the gas tank into a container
and dispose in accordance with federal, state, and
local regulations.
• Start the engine and allow it to run until it stalls. This
ensures that all gasoline has been drained from the
carburetor.
• Allow the engine to cool and remove the spark plug
and put 1 oz. (30ml) of high quality motor oil into the
SECTION 6: TROUBLESHOOTING
Problem
Engine fails to start
Engine runs erratic
Engine overheats
Occasional skip (hesitates)
at high speed
Idles poorly
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
Cause
1. Spark plug wire disconnected.
2. Ignition switch is OFF (O).
3. Fuel tank empty or stale fuel.
4. Primer bulb wasn't pressed enough.
5. Engine flooded.
6. Faulty spark plug.
1. Spark plug wire loose.
2. Blocked fuel line or stale fuel.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air filter.
6. Carburetor out of adjustment.
1. Engine oil level low.
2. Dirty air filter.
3. Carburetor not adjusted properly.
1. Spark plug gap too close.
1. Spark plug fouled, faulty or gap too
wide.
2. Carburetor improperly adjusted.
3. Dirty air filter.
cylinder. Pull the starter rope slowly to distribute the
oil and reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil
from the cylinder before attempting to start the unit after
storage.
• Change oil. Refer to Engine Maintenance. Dispose
of the oil in accordance with federal, state, and local
regulations.
• Store unit in a clean, dry area. Do not store next to
corrosive materials such as fertilizer.
• For more compact storage, store unit in the
shipping position with the upper handle folded
toward engine. See ASSEMBLY section for details.
1. Connect wire to spark plug.
2. Turn switch to ON (I).
3. Fill tank with clean, fresh gasoline.
4. Press primer bulb fully and slowly 5-7
times.
5. Use starting procedure with choke lever
in the Run (C) position.
6. Clean, adjust gap, or replace.
1. Connect and tighten spark plug wire.
2. Clean fuel line; fill tank with clean, fresh
gasoline
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Replace air filter.
6. See authorized service dealer.
1. Fill crankcase with proper oil.
2. Replace air filter.
3. See authorized service dealer.
1. Adjust gap to .025".
1. Reset gap to .025" or replace spark
plug.
2. See authorized service dealer.
3. Replace or clean air filter.
11
Remedy