Troubleshooting - Hyundai HY50 User Manual

8. TROUBLESHOOTING

8.1. Engine.
Engine will not start
Check controls
Check Fuel
Remove and inspect the spark plug
Contact dealer
8.2. Water pump.
No output from pump
Check pump chamber
Check suction hose
Measure suction and discharge head
Check engine
Low pump outlet
Check suction hose
Check discharge hose
Measure suction and discharge head
Check engine
Cause
Fuel Valve 'OFF'
Choke 'OPEN'
Engine Switch 'OFF'
Out of Fuel
Bad fuel, pump has been stored
without treating or draining fuel or
refueling with bad fuel
Faulty spark plug or improperly gapped
Spark plug wet with fuel, flooded
engine
Fuel filter clogged, carburetor
malfunction, ignition malfunction,
valves stuck etc.
Cause
Pump not primed
Hose collapsed, cut or punctured
Strainer not completely under water
Air leak at connector
Strainer clogged
Excessive head
Engine lack power
Cause
Hose collapsed, cut or punctured
Strainer not completely under water
Air leak at connector
Strainer clogged
Hose damaged, too long or diameter too
small
Excessive head
Engine lack power
Rev 6 - 10/11/2015
Corrective measure
Move fuel valve lever to 'ON' position
Move the choke lever to the 'CLOSED'
position unless the engine is warm
Turn engine switch to 'ON'
Refuel
Drain the fuel tank and carburetor and,
refuel with fresh fuel
Adjust gap or replace with a new spark
plug
Dry spark plug and reinstall. Start
engine with throttle lever in 'FAST'
Return to dealer for repair
Corrective measure
Prime pump
Replace hose
Sink strainer and end of suction hose
completely under water
Replace sealing washer if it is missing or
damaged. Tighten hose connector and
clamp
Clear debris from strainer
Relocate pump and hose to reduce head
See engine troubleshooting above
Corrective action
Replace hose
Sink strainer and end of suction hose
completely under water
Replace sealing washer if it is missing or
damaged. Tighten hose connector and
clamp
Clear debris from strainer
Replace discharge hose
Relocate pump and hose to reduce head
See engine troubleshooting above