John Deere AC-350 - Manual (Page 17)

Troubleshooting
Operator’s Manual 17
.
Symptom problem Solution
WArNING: hIGh VOLtAGe. NeVer SerVICe SpACe heAter WhILe It IS pLUGGeD IN,
OperAtING, Or hOt. SeVere BUrNS AND eLeCtrICAL ShOCK CAN OCCUr.
heater will not ignite,
but motor runs for a
short period of time.
Add fuel to tank.
Check fuel tank for bubbles of water
in bottom. If found, remove fuel (see
Storage). Clean tank and fuel filters
(see Maintenance: Fuel Filters). Fill
with clean fuel.
Remove wrong fuel (see Storage).
Clean tank and fuel filters (see Main-
tenance: Fuel Filters). Fill with correct
fuel.
Replace nozzle (see Maintenance:
Nozzle).
Move heater to warmer place until fuel
flows freely.
Clean fuel filters (see Maintenance:Fuel
Filters).
Adjust pump pressure (see
Maintenance: Pump Pressure
Adjustment).
Connect spark plug wire to spark plug.
a. Adjust electrode gap to 0.07"
(see Maintenance: Spark Plug).
b. Clean fuel from spark plug with
clean, soft cloth.
c. Replace plug if heavily coated with
carbon (see Maintenance: Spark `
Plug).
d. Inspect plug for worn or eroded
electrodes. If found, replace plug
(see Maintenance: Spark Plug).
Check electrical connections and
voltage to solenoid. If good, replace
solenoid valve.
Replace electronic ignitor.
Fuel tank empty.
Water in fuel.
Wrong fuel.
Dirt in nozzle.
very low temperature may
cause fuel to thicken and not
flow.
Dirty fuel filters.
Wrong pump pressure.
Spark plug wire disconnected
from plug.
Spark plug problems due to:
a. Wrong gap.
b. Plug wet with fuel.
c. Carbon deposits on plug.
d. Damaged plug.
Solenoid valve not opening.
Damaged electronic ignitor.
WArNING: hIGh VOLtAGe!