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Post by darkwingduck on Jul 14, 2013 8:11:50 GMT -5
Hello all. I recently purchased a digital tachometer an hour meter from Northern Tool. I purchased this so that I may do a proper mixture and idle adjustment after experiencing cut outs and stalling issues with my scoot. My question is... How many times does a spark plug fire per revolution on a four stroke scoot?
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Post by gatekeeper on Jul 14, 2013 8:35:06 GMT -5
It fires once per each revolution, every time the piston is at the top of the cylinder. Every other time the plug fires it is a wasted spark.
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Post by gatekeeper on Jul 14, 2013 8:41:10 GMT -5
After thinking a little more I take it you have to set the meter? If so set it to 2 firings per "revolution".
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New Rider
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Post by darkwingduck on Jul 14, 2013 9:51:48 GMT -5
Thanks. I set the meter to once per revolution. The RPM readout appeared to be in a more realistic range on this setting.
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Post by ltdhpp on Jul 14, 2013 10:26:18 GMT -5
I have a similar tach on mine, the default setting is definitely the wrong one, lol.
Nice scooter.. I wish mine was still shiny like yours!
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