Handle Heating System - Husqvarna 543 XP Workshop Manual

7.22 Handle heating system (543 XPG)
The handle heating system comprises the
following:
• Generator
• Power switch
• Heating elements in the rear handle and the
front handle bar.
Troubleshooting
Troubleshooting requires:
• Ammeter
• Ohmmeter
• Coolant
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
Remove the screw holding the earth cables.
Remove the cover. See Figure 53.
2
Measure the resistance in the whole circuit by
connecting the multimeter to the earth cable and a
properly cleaned cylinder. See Figure 54.
A correct reading with the power switch set to
"OFF" = ∞ Ω.
A correct reading with the power switch set to
"ON" = 3.1 Ω to 4.1 Ω.
Fig 53
Fig 54
Repair Instructions
47
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