BTS 630, 635 11 Troubleshooting
Operator's manual 67
11 Troubleshooting
Potential faults, their causes and remedies can be found in the following table.
Notify your Wacker Neuson representative in case of malfunctions you cannot or
may not remedy yourself.
Malfunction Cause Remedy
Engine does not start. Multifunction switch is in the
stop position.
Set multifunction switch to the
"I" or the "Choke" position.
Spark plug cap is defective. Have the machine repaired. *
* Have these tasks carried out by the service department of your Wacker Neuson representative.
Spark plug is defective. Replace spark plug.
Spark plug is loose. Tighten spark plug.
Spark plug gap is set
incorrectly.
Set spark plug gap.
Fuel filter is clogged. Replace fuel filter.
Engine shuts off right after
starting.
Idle speed is adjusted
incorrectly.
Set idle speed.
Fuel filter is clogged. Replace fuel filter.
Fuel tank is empty. Top up with fuel.
Engine has low performance. Air cleaner is dirty. Replace air cleaner.
Cutting blade does not rotate. V-belt is defective. Replace V-belt.
Clutch is defective. Have the machine repaired. *
Cutting blade rotates in idle. Idle speed is adjusted
incorrectly.
Set idle speed.
Engine cannot be turned off. Electrical connection of the
multifunction switch is
defective.
1. Set multifunction switch to
"Choke". The engine will
switch off after a few
seconds.
2. Have the machine repaired. *
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