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

Briggs & Stratton Small Engine Valve Spring Replacement 691304

This video provides step-by-step instructions for replacing the valve spring on a Briggs & Stratton small engine. The most common reason for replacing this part is if the engine runs 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