In racing, spark plugs are practically a disposable commodity. Use them for a while and throw them away. If the engine starts acting funny, replace the plugs just in case. It's cheap insurance and ...
Lawn and Mowers on MSN
How to change a mower spark plug for an easier start every season
If a petrol mower drags on the pull cord, fires then dies, runs rough or chews through more fuel than it used to, the spark ...
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