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How do I check if my engine’s flywheel key needs replacement?
Whether you want to know how to replace a flywheel or have questions about inspecting it, find a guide to Briggs & Stratton flywheel key below. ...
Briggs FAQ Support : Updated on January 29, 2026
All Briggs & Stratton engines can use up to, and including, 10% ethanol petrol.
Always use clean, fresh, unleaded petrol with an octane rating of at least 77 for side-valve engines or at least 85 for overhead-valve engines. We recommend the use of Briggs & Stratton Fuel Fit® petrol stabilizer to keep fuel fresh and clean.
When using E10-95 petrol, the dosage should be increased by 25%.
Buy fuel in quantities that can be used within 30 days. This will ensure that the fuel is always fresh and that the volatility of the fuel matches the season. Do not mix petrol with oil.
We strongly advise NOT using petrol containing more than 10% ethanol (E10) blend or methanol-containing petrol.
2 min read
Whether you want to know how to replace a flywheel or have questions about inspecting it, find a guide to Briggs & Stratton flywheel key below. ...
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You can avoid many small engine problems and save money on parts and repairs if you follow a regular maintenance schedule. Make good maintenance a...
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When performing snow blower or lawn mower maintenance, you may find that the timing on your small engine is off, causing your outdoor power...