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Craftsman 247.38917

Gas Walk Behind Mower — service parts and specifications. Also written 24738917.

Read this before you order anything. These figures are transcribed automatically from manufacturer manuals and can be wrong. Nothing here is a fitment guarantee or professional advice.

Provided free, as is, with no warranty and no liability accepted — you use it at your own risk and on your own responsibility. Check every number against the plate on your own machine before you buy or fit a part.

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Reference data — no warranty, no fitment guarantee, used at your own risk. Disclaimer

Spark plug
RJ19HJ p.2, 33
Spark plug gap
.030 p.17, 21
Engine oil
SAE30 (above) p.2, 14
Air filter
491588s (cartridge) p.29

Transcribed from the manufacturer manual — not a fitment guarantee. Manufacturers supersede part numbers during a production run: check these against the plate on your own machine 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.

Air filter — Check every 25 hours, more often in dusty conditions. A clogged filter shows up as black smoke and power loss.

All values found, with sources

ItemValueContextPage
Spark plugRJ19HJ… Oil Type: SAE30 Engine Oil Capacity: 18 ounces Fuel: Unleaded Gasoline Spark Plug: Champion® RJ19HJ Engine: Briggs& Stratton Model …2
Spark plug gap.030… Champion® RJ19HJsparkplug. 3. Checkthegapwitha wire gauge. See Figure15. Sparkpluggap shouldbe0.030in (0.76 ram). If necessary, resetthe gap. 4 …17
Engine oilSAE30… Sears Brands Management Corporation, Hoffman Estates, IL 60179 Engine Oil Type: SAE30 Engine Oil Capacity: 18 ounces Fuel: Unleaded Gasoline Spark …2
Air filter491588s… 443 692523 Screw (Air Cleaner Primer Base) 871 262001 Bushing-Valve Guide (Exhaust) 445 491588s Filter-Air Cleaner Cartridge 63709 Bushing-Valve …29

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