Stihl 064

STIHL 064, 066 65
9.1.1 Troubleshooting Chart
Start
yes
Do both handles warm up?
Heater switch on "I"
Measure resistance of
individual components
with ohmmeter
Check rear handle heating element.
In good condition?
Bonding ok?
Resistance
approx. 0.25 ?
Check generator.
Resistance between generator
connection (1) and engine ground
0.6 ?
Check ground wire between tank
housing and crankcase.
Resistance between switch housing
and crankcase approx. 0 ?
Disconnect plug connection at
heater switch.
Switch has to be partly removed
for this purpose.
Turn
on switch
Replace
rear handle
heating element
Replace
generator
Fit new ground
wire between
heater switch
and crankcase
Replace
front handle
Fit new
Switch
Check front handle heating element.
Resistance approx. 1.6 ?
Check heater switch
Closed: approx. 0 ?
Open: high reading?
System in order.
yes
yes
yes
yes
yes
yes
no
yes
no
no
no
no
no
no
no