Suburban Furnace Model SF-42F Tune-Up Kit

Kit #1 has the old style burner gasket applicable from S/N's 934701426 and 094101431, Kit #2 has the new style burner gasket applicable above S/N 094101431. For parts outside of these S/N's please reference the exploded parts view item links below. *See S/N note at the bottom of the page*

Tune-Up Kit #1 Contents (links in blue): (From Date 11/1993 To Date 10/1994)

• Item#22 Electrode With Lead (link): 232286 Above S/N 934701426 To S/N 171416095 (New P# 525009)
• Item#59 Limit Switch (link): 232505 (New P# 525035)
• Item#45 Sail Switch (link): 232261 Above S/N 924201894 (New P# 525003)
• Item#12 Burner Access Door Gasket (link): 070811 Below S/N 094101431 (New P# 525010)

Tune-Up Kit #2 Contents (links in blue):(From Date 10/1994 To Date 4/2017)

Suburban Furnace Model SF42F Exploded Parts View Links

Item# 2 Thermostat, White (link): 161154

Item# 2 Thermostat, Black (link): 161210

Item# 6 Duct Cover (link): 050733

Item# 7 Duct Collar (link): 050715

Item# 9 Manifold Assembly (link): 171596 Above S/N 021206467

Item# 11 Orifice (link): 180216 Below S/N 021206467 (NPT Threads) 

Item# 11 Orifice (link): 180309 Above S/N 021206467 (Metric Threads)

Item# 12 Burner Door Access Door Gasket (link): 070811 Below S/N 094101431 (New P# 525010)

Item# 12 Burner Door Access Door Gasket (link): 071263 Above S/N 094101431 (New P# 525031)

Item# 22 Electrode (link): 231898 Below S/N 921403895

Item# 22 Electrode (link): 232166 Between S/N's 921403895 and 934701426

Item# 22 Electrode (link): 232286 Above S/N 934701426 (New P# 525009)

Item# 23 Burner Assembly (link): 010799

Item# 23 Burner Assembly (link): 010799-OS

Item# 26 Gas Valve (link): 161133 Below S/N 921403846

Item# 26 Gas Valve (link): 161070 Between S/N's 921403846 and 971303163

Item# 26 Gas Valve (link): 161122 Above S/N 971303163

Item# 31 Vent Cap & Exhaust Tube Assembly (link): 260553

Item# 32 Intake Tube Assembly (link): 051249

Item# 34 Front Half Combustion Air Housing Assembly (link): 390852

Item# 37 Rear Half Combustion Air Housing Assembly (link): 390848

Item# 38 Combustion Air Wheel (link): 350183

Item# 39 Firewall Gasket (link): 071084

Item# 40 Motor Assembly (link): 233103 NLA, 2-1/2 Inch, Below S/N 012305199

Item# 40 Motor Assembly (link): 233103-NBK 20510, 2-1/2 Inch, Below S/N 012305199

Item# 40 Motor Assembly (link): 233103MC, 2-1/2 Inch, Below S/N 012305199

Item# 40 Motor Assembly (link): 232683 NLA, 3 Inch, Above S/N 012305199

Item# 40 Motor Assembly (link): 232683-NBK 20564, 3 Inch, Above S/N 012305199

Item# 42 Front Half Room Air Blower Housing Assembly (link): 390873

Item# 44 Rear Half Room Air Blower Housing Assembly (link): 390851

Item# 45 Sail Switch (link): 230509 Below S/N 924201894 (New P# 525024)

Item# 45 Sail Switch (link): 232261 Above S/N 924201894 (New P# 525003)

Item# 48 On / Off Switch (link): 232351

Item# 50 Module Board (Ignition Board) (link): 521099

Item# 50 Module Board (Ignition Board) (link): 521099-OS

Item# 50 Module Board (Ignition Board) (link): 521099MC

Item# 50 Module Board (Ignition Board) (link): FAN50PP

*Not Shown* Wiring Kit (link): 520832 (to convert to new 3 try ignition board) 

Item# 52 Room Air Blower Wheel (link): 350129

Item# 57 Firewall Gasket (link): 070808

*Not Shown* Gasket Kit, Complete (link): 520799

Available Downloads:

• Suburban Furnace Service and Training Manual SF-42F
• Suburban Furnace SF-42F - Installation Instructions

• Suburban Gas Furnace Model SF-42F Users Manual

• Suburban Master Parts List

Please Note: All Suburban Serial Numbers manufactured after January 1990, will be nine digits. The first two (2) digits signify the year of manufacture. The next set of digits, indicate the week of the year and the remaining digits are serial numbers.
For Example: Even though numerically higher, 912000060 is lower than serial number 014103973 due to the year of manufacture.