Replacement Part List

6
Mr. Heater | Big Buddy Operating Instructions and Owner’s Manual
PARTS LIST:
SEE BACK PAGE FOR PARTS ORDERING INFORMATION
REF. # ITEM # DESCRIPTION
1 78402 HANDLE, ASSEMBLY, GRAY
78441 HANDLE, ASSEMBLY, BLACK
3 78442 BACK, COVER
9 78410 DOOR LEFT SIDE COVER, GRAY
78444 DOOR LEFT SIDE COVER, BLACK
10 78411 LEFT, SIDE, COVER, GRAY
78445 LEFT, SIDE, COVER, BLACK
11 78412 (2) REGULATORS, MH18B
12 78413 TIE, WRAPS
13 78414 BRACKET, LEFT, SIDE, REG,
14 78415 LEFT, SIDE, GAS, SUPPLY, LINE
15 78518 FRAME, ASSEMBLY
16 78417 BRACKET, RIGHT, SIDE, REG,
17 78418 KNOB, CONTROL, RED
78512 KNOB, CONTROL, GREEN
18 78419 DOOR, RIGHT, SIDE, COVER, GRAY
78446 DOOR, RIGHT, SIDE, COVER, BLACK
19 78420 RIGHT, SIDE, COVER, GRAY
78447 RIGHT, SIDE, COVER, BLACK
20 78421 VALVE, CONTROL, ASSEMBLY
21 78422 PILOT, ASSEMBLY
22 78423 SHIELD, HEAT, BACK
23 78424 SHIELD, HEAT, FRONT
24 78516 COVER, FRONT, RED
78529 COVER, FRONT, YELLOW
78528 COVER, FRONT, GREEN
25 78519 GUARD, WIRE FACE
78520 GUARD, WIRE FACE, HD
26 78427 BRACKET, BOTTOM, PLENUM, ASSEMBLY
27 78428 PILOT, BRACKET
28 78515 REFLECTOR
29 78526 TILE
30 78525 TILE, GASKET (NOT SHOWN)
31 78517 PLENUM, BODY 2 REQUIRED)
32 78432 BRACKET, TOP, PLENUM, ASSEMBLY
33 78436 RUBBER FEET (4) NOT SHOWN
34 73403 TIP OVER SWITCH
TROUBLESHOOTING INFORMATION:
If Spark electrode does not produce spark.
CHECK
• Spark electrode broken – replace.
• Igniter wire may not be attached to spark
electrode – attach.
• Igniter wire damaged – replace.
• Piezo igniter on control valve defective – replace
control valve.
If Spark electrode produces spark but pilot does not light.
CHECK
• No gas to heater – install disposable cylinder
or connect hose and turn on valve at remote
cylinder.
• “PILOT” position not properly aligned – turn gas
control knob to “PILOT” position and depress.
• Pilot is blocked from spider web or dirt – clean
pilot, see MAINTENANCE.
If Pilot flame does not stay lit when knob is released.
CHECK
• Control knob in “PILOT” position not completely
depressed or held in long enough to purge air from
lines.
• Pilot flame not surrounding thermocouple –
clean pilot, see MAINTENANCE.
• Pilot Assembly defective – replace.
• Tip switch wires disconnected – connect.
If Main burner(s) does not ignite.
CHECK
• Main burner(s) orifice is blocked – clean
burner(s), see MAINTENANCE.
If Heater keeps shutting “OFF” during normal operation.
CHECK
• Pilot is blocked – clean pilot, see MAINTENANCE.
• Provide minimum fresh air opening of 18 square
inches (example 4 1/4” x 4 1/4” opening).
• Tip over switch activated from bumping heater.
Relight
ACCESSORIES:
ITEM # DESCRIPTION
F273701 5 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20 Male Throwaway Cyl. Thd. X P.O.L. w/Handwheel)
F273702 12 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20 Male Throwaway Cyl. Thd. X P.O.L. w/Handwheel)
F272702 12 ft. PROPANE HOSE ASSEMBLY (Swivel 1”-20 Male Throwaway Cyl. Thd. X P.O.L. w/Handwheel)
F273699 Fuel Filter (Replace Annually)
F271802 12 ft. PROPANE HOSE ASSEMBLY w/quick disconnect fittings and 3/8” female flare fitting
F271803 12 ft. PROPANE HOSE ASSEMBLY w/quick disconnect fittings and 11” W.C. regulator w/Acme nut.