Lawn Mower Spark Plug Gap Setting

Checking and changing spark plugs is an essential step in routine small engine maintenance and when troubleshooting problems with your lawn mower snow blower or other outdoor power equipment. Add to compare compare now. If the gap is too small the spark does not have enough space to be generated with the necessary power to ignite the fuel.

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Lawn mower spark plug gap setting. Before doing any small engine repair or maintenance be sure to check your manual for recommendations on specific parts numbers and safety precautions. Stens torch spark plug fits honda gx gc engines. Depending on the type of spark plug needed for your lawnmower engine the gap between the post and tongue center and ground electrodes must be set a specific width. Spark plug gap for lawn mower marketplace 500 only.

If the gap is too large the spark generated in the center electrode will not travel completely to the ground electrode. Either tool can be used to gap a new spark plug but a wire gauge gapping tool is better for. Manual says gap should be 045 on page 11 and 030 on page 13. Most spark plug gapping tools can be categorized as either wire gauge or leaf gauge gapping tools.

Engine model is 143 016708. The old plug seems to be 045 but other web sites discussing lawn mower maintenance say 030 is a proper gap. Sold by bowers tool llc. The mower is a 6 75hp 21 walk behind mulching mower.