Spark Verification Procedure
How do I verify if there is any spark coming from my spark plug?
The safest way to verify spark is as follows:
- Remove your spark plug
- Put about a teaspoon of gas (or starting fluid) in the cylinder
- Replace the spark plug
- Start your engine
If the engine tries to turn over (even for a second) and dies, then you have spark. This would indicate the problem probably lies somewhere else (fuel, carburetor, valves, etc.) If the engine does not turn over at all, then there may be a problem with your ignition system. The first thing to do is change the spark plug.
NOTE: Checking for spark by removing the plug and grounding it to the engine block poses an electrocution hazard and IS NOT recommended due to its lack of reliability.
For additional Magnetron ignition system information and testing procedures, please visit our Ignition System Theory and Testing page and our Electrical schematic/wiring diagrams.
Your best source of information regarding any engine concern would be a Briggs & Stratton Authorized Dealer. Your Briggs & Stratton Authorized Dealer has all the information relating to Briggs & Stratton warranty information, replacement engines, short blocks, parts, pricing, service/repair, specifications, etc.
For your convenience, we offer three easy ways to locate your nearest Briggs & Stratton Authorized Dealers:
Use our website's Service Center Locator.
Visit www.yellowpages.com and enter "Lawn Mowers" or "Engines-Gasoline" in the Category search field and your Postal Code in the Location search field.
Call the Briggs & Stratton Automated Hotline at (800) 444-7774. This hotline is available 24 hours a day / 7 days a week and features voice recognition technology to assist you in finding the Briggs & Stratton Authorized Dealers in your area. Automated maintenance tips, product information, and FAQs are also offered through voice activated menus.
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