10.1.1 Troubleshooting Chart - Stihl 034 Series User Manual

10.1.1 Troubleshooting Chart

yes
Do both handles warm up?
Measure resistance of
individual heating elements
(On machines with carburetor heating, pull connector
pin of wire from heating element out of the
Check rear handle heating element
Previous heating element approx. 0.25 Ω ?
New heating element approx. 1 Ω ?
Resistance between generator
connection (1) and engine ground
Check ground wire between tank housing
Resistance between switch housing
and crankcase approx. 0 Ω?
Disconnect plug connection at
Switch has to be partly removed
Check front handle heating element
Previous heating approx. 1.6 Ω?
New heating element approx. 7 Ω?
(On machines with carburetor heating, refit connector
pin of wire from heating element in the
034, 036, 036 QS
Start
no
Heater switch on "I"
yes
with ohmmeter
round plug)
In good condition?
Bonding OK?
yes
Resistance
(see 10.1 and 10.3)
yes
Check generator
approx. 0.6 Ω?
yes
and crankcase
yes
heater switch
for this purpose.
yes
Check heater switch
Closed: approx. 0 Ω?
Open: high reading?
yes
round plug)
System in order.
no
Turn on
switch
no
Replace
rear handle
no
heating element
no
Replace
generator
Fit new ground
wire between
no
heater switch
and
crankcase
no
Replace
front handle
no
Fit new
switch
49