Gas Walk Behind Mower — service parts and specifications. Also written 917370751.
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.
Belt — Belts are consumables. Length and width must match exactly — a belt that is half an inch off will throw or burn.
Blade — Sharpen or replace at the start of each season. Always balance a sharpened blade before refitting.
| Item | Value | Context | Page |
|---|---|---|---|
| Spark plug | J19LM | … Oil Type (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug: Champion J19LM or RJ19LM (Gap: .030") Blade Bolt Torque: 35-40 ft … | 4 |
| Spark plug | RJ19LM | … (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug: Champion J19LM or RJ19LM (Gap: .030") Blade Bolt Torque: 35-40 ft. Ibs. • The … | 4 |
| Spark plug gap | .030 | Oil Capacity: 20 Ounces Oil Type (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug: Champion J19LM or RJ19LM (Gap: .030") Blade … | 4 |
| Engine oil | SAE 30 | … / Type: 1.6 Quarts (Unleaded Regular) Oil Capacity: 20 Ounces Oil Type (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug … | 4 |
| Engine oil | SAE 5W-30 | … (Unleaded Regular) Oil Capacity: 20 Ounces Oil Type (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug: Champion J19LM or RJ19LM … | 4 |
| Engine oil | 5W-30 | … Regular) Oil Capacity: 20 Ounces Oil Type (API SG-SL): SAE 30 (above 32°F); SAE 5W-30 (below 32°F) Spark Plug: Champion J19LM or RJ19LM (Gap … | 4 |
| Air filter | 690700 | … rake 695891 Brake 699985 Cap-Fuel Tank 792040 Base-Air Cleaner Primer 692298 Cover-Air Cleaner 690700 Screw (Blower Housing Cover) 699374 Tank-Fuel … | 47 |
| Belt | 406557 | … Washer, Curved, Cylindrical 40 193909X427 Wheel & Tire Assembly, Front 8 x 1-3f4 44 406557 V-Belt 47 67725 Washer 49 163409 Screw, Hi-Lo Thread 50 … | 41 |
| Blade | 406712 | Cable, Operator Presence KEY PART NO. NO. DESCRIPTION 30 189179 Blade Adapter / Pulley 31 406712 Blade, 21" 32 851074 Washer 33 850263 Washer, Lock … | 39 |