White Magic PRO 1900, Owner'S Manual

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6. Check the choke operation.
7. Check fuel filter.
8. Check ignition wire connections.
9. Check spark plugs.
Engine will not start until adequate oil pressure is reached. It may take several seconds or sev-
eral restarts when cold. The “ENGINE KILL OVERIDE” switch may be held in to temporarily
start the engine while in safety kill mode. Start only after cool water has been added to water
tank or if 280 degrees output was reached allowing machine to cool down.
It is imperative
that the machine be shut down immediately if the “OIL PRESSURE” light remains on.
LOW VACUUM OR POOR AIRFLOW
Troubleshooting vacuum and airflow problems is usually quite simple. Start by removing the
input vacuum hose at the top of the recovery tank and sealing the vacuum. The vacuum should
read about 14” Hg and the engine rpms should be about 2500 rpms. Visually check to see if the
drive belts slow down under load. If the blower belts slow down shut the engine off. Feel the
pulleys, idlers, or clutch to check for excessive heat. By systematically checking each of the
items below most problems can be easily found:
1. Check that the drain valve is not in the open position or leaking.
2. Recovery tank or in-line filter box gaskets may not be sealing properly.
3. Filters may be dirty on recovery tank of in-line filter box.
4. Hose leaks or blockages. (If blockage is suspected simply reverse hose by put-
ting wand end directly to recovery tank or filter box to remove debris)
5. Vacuum relief valve on blower stuck open or leaking excessively.
6. Blockage in head of cleaning tool.
7. Blockage in hose reel swivel.
8. Blower input hose collapsed because of excessive heat inside case.
9. Clogged blower exhaust system.
TROUBLESHOOTING GUIDE (continued..)
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