Troubleshooting - Briggs & Stratton W3 Serie Manual Del Operador

Troubleshooting

Problem
Engine fails to start
Engine fails to start with
electric starter
(Electric Start Units Only)
Engine runs erratic
Engine overheats
Occasional skips (hesitates)
at high speed
Idles poorly
Excessive vibration/noise
Cause
1. Spark plug boot disconnected.
2. Fuel tank empty or stale fuel.
3. Engine not primed (if equipped with primer).
4. Faulty spark plug.
5. Blocked fuel line.
6. Engine flooded.
1. Electric starter push key not fully inserted.
2. Battery not charged.
3. Circuit breaker tripped.
1. Spark plug boot 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.
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug gap too close.
1. Spark plug fouled, faulty, or gap too wide.
2. Dirty air cleaner.
1. Cutting blade loose or unbalanced.
2. Bent/damaged blade.
Remedy
1. Connect wire to spark boot.
2. Fill tank with clean, fresh gasoline.
3. Prime engine as instructed in the Engine
Operator's Manual.
4. Clean, adjust gap, or replace.
5. Clean fuel line.
6. Wait a few minutes to restart; do not
prime.
1. Insert electric starter push key into starter
housing until it snaps into place.
2. Charge battery.
3. Debris may be blocking blade operation.
Stop engine, remove electric starter push
key, and disconnect spark plug boot. Verify
grass or other debris are not obstructing
the blade. Carefully clean out debris if
necessary. Reattach spark plug boot and
reinsert electric starter push key. Wait one
minute after tripping for circuit breaker to
automatically self-reset then reattempt start.
1. Connect and tighten spark plug boot.
2. Clean fuel line; fill tank with clean, fresh
gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to Engine Operator's Manual.
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
1. Adjust spark plug gap. Refer to Engine
Operator's Manual.
1. Reset gap or replace spark plug.
2. Refer to Engine Operator's Manual.
1. Tighten blade. Balance blade.
2. See an authorized service dealer.
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