593959 Recoil Starter Assembly 591139 for Briggs & Stratton 450e 500e 550e 550ex Series 08P502 093J02 09P602 09P702 Engine Lawn Mower, Replace 595355 590588 593961

What It Is

The 593959 Recoil Starter Assembly is the pull-start mechanism for Briggs & Stratton 450e, 500e, 550e, and 550ex series engines (models like 08P502, 093J02, 09P602, 09P702). It replaces broken or worn-out starter ropes, pulleys, springs, and housings on walk-behind mowers.

Fitment & Compatibility

Before buying, confirm your engine’s model number (stamped on the valve cover or blower housing). This assembly fits:

• Briggs & Stratton engines: 450e, 500e, 550e, 550ex series (e.g., 08P502, 093J02, 09P602, 09P702)
• OEM replacements: 595355, 590588, 593961, and 591139
• Deck size: Works on any deck size that uses these engines (usually 20–22 inch push mowers)
• Aftermarket: This is a non-OEM part; check that your engine uses a 3-bolt mounting pattern (common on these series) Measure the bolt hole spacing (roughly 3.5 inches center-to-center) and the rope hole diameter (usually 5/32 inch) to confirm fit if unsure.

Key Things to Know

• Quality: At this price, expect functional but not OEM-grade plastic. Some users report the rope is slightly thinner than original—if so, replace with a thicker 3/16-inch rope.
• Installation difficulty: Easy for DIYers with basic tools (socket set, screwdriver). You’ll need to release spring tension carefully—wear gloves and eye protection.
• Common gotcha: The spring may need pre-winding before attaching the rope. Follow the included instructions or a video—over-winding can snap the spring.
• Compatibility note: Not for vertical shaft engines or older Briggs models (e.g., 10T, 12T). Double-check your engine’s type number (e.g., 093J02) to avoid returns.

Should You Buy It

If your Briggs 450e–550ex series mower’s starter is dead or the rope is frayed, this is a budget-friendly fix. It’s ideal for DIYers who want to avoid a $40+ OEM part and don’t mind slightly softer plastic. Skip if you need exact OEM durability or have a different engine series.