Troubleshooting - Husqvarna ST 151 Operator's Manual

Troubleshooting

See appropriate section in manual unless directed to a service center/department.
PROBLEM CAUSE
Does not start 1. Safety ignition key is not inserted.
2. Out of fuel.
3. ON/OFF switch is OFF.
4. Choke in OFF position.
5. Primer not depressed.
6. Engine is flooded.
7. Spark plug wire is disconnected.
8. Bad spark plug.
9. Stale fuel.
10. Water in fuel.
11. Vapor locked fuel line.
Loss of power 1. Spark plug wire loose.
2. Throwing too much snow.
3. Fuel tank cap is covered with ice or
4. Dirty or clogged muffler.
5. Improper cable length.
6. Blocked muffler.
7. Blocked carburetor air intake.
Engine idles or 1. Choke is in FULL position.
runs roughly
2. Blockage in fuel line.
3. Stale fuel.
4. Water in fuel.
5. Carburetor is in need of replacing
6. Belt stretch.
Excessive 1. Loose parts or damaged augers or
vibration / Handle
movement
2. Handles not positioned correctly.
3. Adjustment lever nuts are loose.
Recoil starter is 1. Frozen recoil starter.
hard to pull
2. Rope is interfering with components. 2. Recoil rope should not be touching any wires or hoses.
Loss of snow 1. Worn belt.
discharge or
2. Auger v-belt is off of pulley.
slowing of snow
3. Auger v-belt is worn.
discharge
4. Clogged discharge chute.
5. Augers / impeller jammed.
Lights not On 1. Motor not running.
(If Equipped)
2. Loose wire connection.
3. LED burnt out.
Rotator hard to 1. Debris in chute rotator mechanism. 1. Clean internal parts of chute rotator mechanism.
move
2. Cable are kinked or damaged.
TROUBLESHOOTING
snow.
impeller.
CORRECTION
1. Insert safety ignition key.
2. Fill fuel tank with fresh, clean gasoline.
3. Move ON/OFF switch to ON position.
4. Move to FULL position.
5. Prime as instructed in the Operation section of this manual.
6. Wait a few minutes before restarting, DO NOT prime.
7. Connect wire to spark plug.
8. Replace spark plug.
9. Empty fuel tank & carburetor, refill with fresh, clean gasoline.
10. Empty fuel tank & carburetor, refill with fresh, clean gasoline.
11. Ensure all the fuel line is below the outlet of the fuel tank. Fuel
line should run continuously down from fuel tank to carburetor.
1. Reconnect spark plug wire.
2. Reduce speed and width of swath.
3. Remove ice and snow on and around fuel tank cap.
4. Clean or replace muffler.
5. Adjust cable.
6. Clear blockage (ensure engine is cool).
7. Clear blockage (ensure engine is cool).
1. Move choke to OFF position.
2. Clean fuel line.
3. Empty fuel tank & carburetor, refill with fresh, clean gasoline.
4. Empty fuel tank & carburetor, refill with fresh, clean gasoline.
5. Contact an authorized service center/department.
6. Replace auger v-belt.
1. Tighten all fasteners. Replace damaged parts. If vibration
remains, contact an authorized service center/department.
2. Ensure handles are locked into positioning.
3. Tighten nuts until handle feels secure.
1. See "IF RECOIL STARTER HAS FROZEN" in the Operation
section of this manual.
1. Adjust drive cable per maintenance procedures.
2. Check / reinstall auger v-belt.
3. Check / replace auger v-belt.
4. Clean snow chute.
5. Remove debris or foreign object from augers / impeller.
1. Start engine.
2. Check wire connections at engine and both lights.
3. Replace LED light module. (Individual LEDs are not replaceable)
2. Ensure cables are not kinked. Replace damaged cables.
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