DeVillbiss Air Power Company WG1420 - Manual (Page 10)

10
EVERY 5 HOURS
OR DAILY
X
100 HOURS OR
EVERY SEASON MAINTENANCE OPERATION
Check Oil Level
Change Oil *
Change Air Filter
Replace or Clean Spark Plug
Clean exterior of pressure washer
50 HOURS OR
EVERY SEASON
X
NOTE 2
25 HOURS OR
EVERY SEASON
MAINTENANCE SCHEDULE FOR GAS ENGINE
X
NOTE 1
X
X
NOTE 3
*Change oil after first 2 hours then after every 25 hours.
Note 1: Change oil every 25 hours when operating under heavy load or in high temperatures.
Note 2: Clean more often under dusty conditions.
Note 3: Clean exterior with cloth or brush. Do not use high pressure spray to clean pressure washer or
engine.
PROBLEM REMEDY CAUSE
Engine will not start or stops while
operating.
Engine is running but pump is not
building maximum pressure or has
irregular pressure.
Engine is overloaded.
Water leaking from head.
Water leaking from bottom of pump.
Oil leaking from bottom of pump.
Noisy Pump.
No low pressure detergent delivery.
• Fill with gasoline.
• Turn to "ON" position.
• Replace spark plug.
• Push primer 2 to 3 times.
• Reduce pressure at pressure
regulator knob.
• Attach wire to spark plug.
• Replace fuel tank cap.
• Open water faucet.
• Thaw out unit completely.
• Straighten hose.
• Clean water inlet screen.
• Adjust pressure regulator
clockwise for more pressure.
• Replace nozzle.
• Run unit with gun open and
wand removed.
• Clean nozzle.
• Take to Authorized Service
Center.
• Take to Authorized Service
Center.
• Take to Authorized Service
Center.
• Push nozzle forward.
• Unplug siphon hose.
• Take to Authorized Service
Center.
• Low on fuel.
• Ignition switch in "Off" position.
• Faulty spark plug.
• Cold engine/engine not primed.
• Unit loaded during start-up.
• Spark plug wire loose.
• Fuel tank not venting properly
• Water faucet closed.
• Unit has been allowed to freeze.
• Garden hose kinked.
• Water inlet screen clogged with
debris.
• Pressure regulator on pump not set
correctly.
• Unsuitable or worn out nozzle.
• Air trapped in pump.
• Nozzle partially blocked.
• Head O-Ring worn.
• Piston seals worn.
• Piston seals worn.
• Pump sucking air.
• Nozzle set in wrong position.
• Siphon hose or filter plugged.
• Siphon check valve clogged in
pump.
TROUBLESHOOTING GUIDE