Troubleshooting - Briggs & Stratton WP20 Manual Del Operario

Troubleshooting

Problem
No pump output or
low pump output when
water pump is running.
Engine will not start;
lacks power; starts and
runs rough; or "hunts"
or falters.
Engine shuts down
when running.
16
Cause
1. Pump not primed.
2. Suction hose restricted, collapsed,
damaged, too long, or diameter too small.
3. Strainer not completely under water.
4. Air leak at suction hose connector.
5. Strainer clogged.
6. Discharge hose restricted, damaged, too
long, or diameter too small.
7. Excessive or marginal head.
8. Engine speed lever is in "Slow" position.
1. Rocker switch set to "Off".
2. Fuel shutoff is in "Off" position.
3. Dirty air cleaner.
4. Out of fuel.
5. Stale or contaminated fuel or water in fuel.
6. Spark plug wire not connected to spark plug. 6. Connect wire to spark plug.
7. Bad spark plug.
8. Excessive fuel is present in the air/fuel
mixture causing a "flooded" condition.
9. C arburetor is out of adjustment.
Out of fuel.
Correction
1. Fill pump chamber with water and prime pump.
2. Replace suction hose.
3. Sink the strainer and the end of suction hose
completely under water.
4. Replace sealing washer if missing or
damaged. Tighten hose connector and clamp.
5. Clean debris from strainer.
6. Replace discharge hose.
7. Relocate pump and/or hoses to reduce head.
8. Move engine speed lever to "Fast" position.
1. Set switch to "On".
2. Turn fuel shutoff to "On" position.
3. Clean or replace air cleaner.
4. Wait two minutes and fill fuel tank.
5. Drain fuel tank and carburetor; fill with fresh fuel.
7. Replace spark plug.
8. Wait 5 minutes and re-crank engine.
9. C ontact Authorized service facility.
Wait two minutes and fill fuel tank.
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