Gas Walk Behind Mower — service parts and specifications
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.
Reference data — no warranty, no fitment guarantee, used at your own risk. Disclaimer
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.
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.
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.
| Item | Value | Context | Page |
|---|---|---|---|
| Spark plug | RC12YC | … Oil Type: SAE30 Engine Oil Capacity: 15 ounces Fuel: Unleaded Gasoline Spark Plug: Champion® RC12YC Engine: Briggs& Stratton Model … | 2 |
| Spark plug gap | .030 | … 1. Fillcrankcasewith properoil. 2. Cleanareaaroundandontop of engine. 1. Adjustgapto .030". 1. Resetgapto .030"or replacesparkplug. 7. Referto Air … | 19 |
| Spark plug gap | .020 | … Champion® RC12YCsparkplug. 3. Checkthegapwitha wire gauge. See Figure13. Sparkpluggap shouldbe0.020in (0.51 ram). If necessary, resetthe gap. 4 … | 15 |
| Engine oil | SAE30 | … state. Sears Brands Management Corporation, Noffman Estates, IL 60179 Engine Oil Type: SAE30 Engine Oil Capacity: 15 ounces Fuel: Unleaded Gasoline … | 2 |
| Air filter | 798452 | … 692390 Wire-Stop 358 590590 Gasket Set-Engine 404 690272 Washer (Governor Crank) 445 798452 Filter- Air Cleaner Cartridge 455 590545 Cup-Flywheel … | 28 |