Kit #1 has the old style burner access gasket which makes kit #1 applicable to between serial numbers 934701426 and 094101431, (Kit #2) has the new style burner access gasket applicable to above serial number 094101431. For parts outside of these serial numbers please reference the exploded parts view item links below the tune-up kits. *See serial number note at the bottom of the page* SKU: SF-20TKIT
Tune-Up Kit #1 Contents: (links in blue)
Tune-Up Kit #2 Contents: (links in blue)
SUBURBAN FURNACE SF-20 EXPLODED PARTS VIEW LINKS
Item# 2 Thermostat, White, 161154
Item# 11 Orifice 180188 Below S/N 021206467 (NPT Threads)
Item# 11 Orifice 180305 Above S/N 021206467 (Metric Threads)
Item# 12 Burner Access Door Gasket 071263 Above S/N 094101431 (New P# 525031)
Item# 22 Electrode 232286 Above S/N 934701426 (New P# 525009)
Item#38 Combustion Wheel 350189 (New P# 350211)
Item# 45 Sail Switch 230509 Below S/N 924201894 (New P# 525024)
Item# 45 Sail Switch 232261 Above S/N 924201894 (New P# 525003)
*Not Shown* Wiring Kit 520832 (to convert to new 3 try ignition board)
*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.