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spark plugs

Posted by hbrmstr NH (My Page) on
Sun, Apr 28, 13 at 10:10

Do lawn tractors and lawn mowers need new spark plugs every year to insure peak performance ?

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RE: spark plugs

How do you define "peak"?
It kind of depends on each individual engine as to what works best cost wise.
On my 24? year old Honda walk behind mower, I change the plug every 5-6 years. I "think" it seems to help, but it'sprobably more of a placebo effect.
Previous mower with a Tecumseh (Craftsman) engine I would replace about every 15-20 hours or it would become hard starting when hot. In retrospect, it might have been a heat sensitive ignition coil??

I'd go for hours used and then pay attention if it REALLY makes a difference or not. Adjust hours accordingly.

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