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What is a model number, and where do I find it?

Briggs & Stratton Small Engine Piston Assembly Replacement 791786

This video provides step-by-step instructions for replacing the piston assembly on a Briggs & Stratton small engine. The most common reason for replacing this part is if the engine is loud or running rough.

All of the information in this video is applicable to the following brands: Briggs & Stratton
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How your small engine works:

2-Cycle | 2-Cycle | 2-Cycle

How It Works: 2-Cycle Engine
For additional repair advice and help finding your model number visit the repair help section of our website: Small Engine repair help