Handle Heater And Carburettor Heater (560Xpg, 562Xpg); Troubleshooting - Husqvarna 560XPG Workshop Manual

7.38 Handle heater and carburettor
heater (560XPG, 562XPG)
Certain chain saw models can be fitted with a
handle heater and a carburettor heater and
comprise the following:
• Generator
• Power switch
• Heating element in the rear handle
• Handle bar with heating element
• Carburettor heating element
• Thermostat

7.39 Troubleshooting

It is possible to troubleshoot with most parts fitted to
the chain saw. Troubleshooting requires:
• Ammeter
• Ohmmeter
• Coolant spray
Oxidation of the connectors in the heating elements
in the rear handle and the power switch's contact
plate is the most common fault.
Troubleshoot as follows:
1. Loosen the screw holding the earth cable. See
Figure 1.
2. Measure the resistance in the whole circuit by
connecting the multimeter to the earth cable
and a properly cleaned cylinder. See Figure 2.
A correct reading with the power switch set to
"OFF" = ∞ Ohm
A correct reading with the power switch set to
"ON" = 4 to 5 Ohm
3. Unscrew the two screws on the front handle
and remove the cover. See Figure 3.
Fig 1
Fig 2
Fig 3
Repair Instructions
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