The Mower Shop Tune Up Kit for Super Recycler 21 IN (SR4) OHV Engine with 133-8183-03 Blade, Air Filter 119-1909, Spark Plug and Oil

What It Is

This is a complete tune-up kit for the Toro Super Recycler 21 IN (SR4) mower equipped with the OHV engine. It includes a 133-8183-03 blade, air filter 119-1909, spark plug, and oil—everything needed for a single-season service in one box.

Fitment & Compatibility

Before buying, confirm your mower is a Toro Super Recycler 21-inch (SR4) model with an OHV engine—this kit will not fit standard Recycler or 22-inch decks. The blade is a 21-inch, 3-in-1 design (mulch, bag, side-discharge), OEM part 133-8183-03. The air filter (119-1909) and spark plug are specific to the Briggs & Stratton OHV engine in this series. Measure your blade length (21") and check your engine model number (stamped near the spark plug) to ensure it matches the OHV designation. This is an aftermarket kit, not OEM Toro, but uses compatible replacements.

Key Things to Know

• Quality is solid for the price. Blade is sharp and balanced out of the box; air filter and plug are standard-grade replacements. Not premium, but fine for home use.
• Installation is straightforward. Remove the blade bolt (left-hand thread—turn clockwise to loosen), swap the air filter, replace the plug, and add oil. No special tools beyond a socket wrench and gap gauge for the plug.
• Only one blade included. If you need a second blade for a quick swap, buy separately. The kit is a one-and-done for the season.
• Oil included is 20W-50. Check your owner’s manual—some SR4 engines recommend 10W-30. If your climate is cold, you may want to use your own oil.

Should You Buy It

If you own a Toro Super Recycler 21-inch SR4 with an OHV engine and want a single purchase to cover the season’s maintenance, this kit saves you time and shipping costs. It’s a good value for the price, especially if you’re not picky about OEM-brand filters or plugs. Skip it if you need a second blade or prefer OEM parts for exact fit.