OrphanSpecStraight answers for orphaned outdoor equipment

Craftsman 247.88045

Gas Snowblower — service parts and specifications. Also written 24788045.

Spark plug
RJ19LM · RN4C p.2, 40
Spark plug gap
.030 p.2
Engine oil
SAE5W-30 · 5W-30 · SAE 0W- p.2, 40
Belt
754-0222A · 754-0131 p.31
Saw chain
713-0284 · 713-0286 p.31

Note: some values below appear more than once in the manual without a clear label. This usually means the model changed across production years. Check your serial number plate before ordering.

What these parts do

Spark plug — Replace annually or every 100 operating hours. Cross-reference equivalents from other brands usually fit.

Spark plug gap — Set with a feeler gauge before installing. A wrong gap causes hard starting and rough running.

Engine oil — Grade depends on operating temperature, not on the machine. Several grades listed below are all correct — pick by season.

Belt — Belts are consumables. Length and width must match exactly — a belt that is half an inch off will throw or burn.

Saw chain — Replacement chains are specified by pitch, gauge and drive link count together. All three must match, not just the bar length.

All values found, with sources

ItemValueContextPage
Spark plugRJ19LM… Type: SAE5W-30 Engine Oil Capacity: 28 ounces Fuel Capacity: 4 Quarts Spark Plug: Champion@RJ19LM Spark Plug Gap: .030" Model …2
Spark plugRN4COS) Intake Valve (Std.) Flat Washer Belleville Washer Screw,5/16-18x 2-1/2" Resistor Spark Plug (RN4C) also availablein Packaged Part #740069 Valve …34
Spark plug gap.030… IL 60179 Engine Oil Type: SAE5W-30 Engine Oil Capacity: 28 ounces Fuel Capacity: 4 Quarts Spark Plug: Champion@RJ19LM Spark Plug Gap: .030" Model …2
Engine oilSAE5W-30… state. Sears, Roebuck and Co., Hoffman Estates, IL 60179 Engine Oil Type: SAE5W-30 Engine Oil Capacity: 28 ounces Fuel Capacity: 4 Quarts Spark …2
Engine oil5W-30… upto the FULLmark onthe dipstick. 3. If theoil levelis notupto FULL, pourfreshmotoroil (5W-30, with a minimumclassificationof SL/SJ) …14
Engine oilSAE 0W-… See Recommended Oil Usagechart. The engine'soilcapacityis 28 ounces. Recommended Oil Usage SAE 0W-30I f --,, FULL ADD Maintain oil level between …16
Belt754-0222A… Brkt., Idler, Auger 13. 710-0538 Screw, Hex Cap Lock, 14. 756-0178 Idler, Flat,2.75OD 15. 754-0222A V-Belt,1/2x 44.0 16. 750-04718 Spcr.,.51IDx …31
Belt754-0131… Flat,.406x 1.25 90. 748-0234 Spacer, Shoulder 91. 736-0159 Washer, Flat,.349x .879 92. 754-0131 V-Belt,3/8 x 35.5 93. 712-04064 Nut, Fig Lk, 1/4-20 …32
Saw chain713-0284… HxInsert Jam Lk 31. 710-04484 TT Screw,5/16-18x .750 32. 712-0717 Nut, Insert3/8-16 33. 713-0284 Chain, Endless,#41x 36L 34. 713-0286 Chain,#420x …31
Saw chain713-0286… .750 32. 712-0717 Nut, Insert3/8-16 33. 713-0284 Chain, Endless,#41x 36L 34. 713-0286 Chain,#420x 40L 35. 713-04015 Sprocket,#41x lOT 36. 714-0135 …31

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