John Deere AC-350 - Manual (Page 21)

Service
Operator’s Manual 1
MAINteNANCe (CONtINUeD):
(Fig. )
(Fig. )
(Fig. )
WArNING: NeVer SerVICe heAter WhILe
It IS pLUGGeD IN, CONNeCteD tO
prOpANe SUppLY, OperAtING Or
hOt. SeVere BUrNS AND eLeCtrICAL
ShOCK CAN OCCUr.
ONLY A qUALIFIeD SerVICe perSON
ShOULD SerVICe AND repAIr
heAter.
UPPER SHELL REMOvAL:
1. Remove screws along each side and top of heater using
5/16" nut-driver. These screws attach upper and lower
shells together (Fig. ).
. Lift upper shell off.
FAN BLADES AND AIR DEFLECTORS:
1. Remove upper shell. (see Mantenance: Upper Shell
Removal).
2. Clean fan blades and air deflectors with clean, soft cloth
moistened with kerosene or solvent (Fig. ).
3. Dry fan blades and air deflectors thoroughly.
. Replace upper shell.
SPARK PLUG:
1. Remove upper shell. (see Mantenance: Upper Shell
Removal).
. Remove spark plug wire from spark plug (Fig. ).
3. Remove spark plug from burner head using 13/16"
open-end wrench (Fig. ).
. Replace spark plug if damaged or heavily coated with
carbon.
. Clean and regap spark plug electrodes to .07 inch
(Fig. 6).
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace upper shell.
(Fig. 6)
Upper Shell
Fan
Blade
Air
Deflector
Spark Plug
Wire
Spark Plug
Burner
Head
.075
inch