BE B389HA - Troubleshooting Guide; Engine Troubleshooting; Pump Troubleshooting

Engine will not start
1. Throttle lever on/off switch in OFF
Position.
1. Turn throttle lever to ON position.
2. No fuel in engine.
2. Fill fuel tank or turn on fuel supply.
3. Worn fouled or dirty spark plug.
3. Replace with factory recommended
spark plug.
4. Pressure build up in pump.
4. Squeeze trigger on spray wand
(refer to operating instructions in
Owner’s manual).
Units with Oil Alert
1. Engine not level or,
Engine oil level too low.
1. Place engine on level surface or
Fill crankcases with SAE 10W30 oil
(refer to engine manufacturers
instruction manual)
Engine runs well at no load
but “bogs” down under full
load
1. Engine speed is too slow.
1. Adjust Throttle Lever back to full
throttle
Engine will not start; or starts
and runs rough
1. Low oil level.
1. Fill crankcase to proper level.
2. Dirty air cleaner.
2. Clean or replace air cleaner.
3. Out of petrol.
3. Fill fuel tank.
4. Stale petrol.
4. Drain petrol tank, fill with fresh fuel.
5. Spark plug wire not connected to
spark plug.
5. Connect wire to spark plug.
6. Bad spark plug.
6. Replace spark plug.
7. Water in petrol.
7. Drain petrol tank, fill with fresh fuel.
8. Over-choking.
8. Open choke fully and crank engine.
Engine shuts down during
operation
1. Out of petrol.
1. Fill fuel tank.
2. Low oil level.
2. Fill crankcase with oil, to proper
level.
Engine lacks power
1. Dirty air filter
1. Replace air filter
Engine “putts” or falters
1. Choke is opened too soon
1. Move choke to halfway position until
engine runs smoothly.
* All engine servicing to be taken to
Manufacturer’s authorized service
outlet.
11.2.2. Pump.
Problem
Cause
Correction
No low pressure detergent
delivery.
1. Using wrong nozzle.
1. Insert black soaper nozzle.
2. Siphon hose or filter is plugged.
2. Unplug siphon hose.
machine does not reach
required pressure.
1. Restricted or insufficient water
supply.
1. Check supply hose, faucet and inlet
water filter. Must be connected to
water source which provides 6 GPM.
2. Unsuitable or worn out nozzle.
2. Replace nozzle.
3. Regulator set too low.
3. Reset unloader by turning knob
(clockwise increases pressure).
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