Service, troubleshooting and repair, Troubleshooting, Caution – EarthQuake WP4310 User Manual
Page 12
Operator’s Manual
WP4310 43cc Water Pump
12
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TROUBLESHOOTING
Problem
Possible cause
Remedy/Action
Engine will not start
Engine runs rough, floods during
operation
Engine is hard to start
Engine misses or lacks power
Engine runs, but has no power
Engine revs too high
Engine runs, but doesn’t pump water
1. Flip switch to on position
2. Connect spark plug wire to spark plug
3. Clean or replace spark plug
1. Clean or replace air cleaner
2. Turn off choke
3. Call factory
1. Drain old fuel and replace with fresh.
Use gas stabilizer at end of season
2. Make sure spark wire is securely
attached to spark plug
3. Clean carburetor, use gas stabilizer,
new gas can
1. Remove and clean
2. Clean or replace
3. Call factory
4. Replace spark plug and adjust gap
1. Turn off choke after engine is running
2. Call factory
3. Call factory
1. Add fuel to tank
1. Prime water pump as directed in
manual
2. Lower suction hose
3. Unclog foreign objects from strainer
4. Replace hoses
1. Power switch off
2. Spark plug wire disconnected
3. Spark plug has no spark
1. Dirty air cleaner
2. Choke partially engaged
3. Carburetor out of adjustment
1. Stale fuel
2. Spark plug wire loose
3. Dirty carburetor
1. Clogged fuel tank
2. Clogged air cleaner
3. Improper carburetor adjustment
4. Spark plug dirty, improper gap, or
wrong type
1. Choke on
2. Carburetor out of adjustment
3. Worn engine lower seal
1. Low fuel in tank
1. Pump not primed
2. Suction hose elevated too high
3. Strainer clogged
4. Hose(s) damaged
CAUTION
PRACTICE SAFETY AT ALL TIMES. ENGINE MUST
BE TURNED OFF AND ALLOWED TO COOL, AND
SPARK PLUG WIRE MUST BE DISCONNECTED
BEFORE ATTEMPTING ANY MAINTENANCE OR
REPAIR.
SERVICE, TROUBLESHOOTING AND REPAIR