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August 29th, 2011, 06:35 AM   #1
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Spark Plug Gap

Anyone know what the gap is supposed to be? I can't find much in the manual other than to replace at 30 hours.

2010 FE450
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August 29th, 2011, 09:46 AM   #2
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Re: Spark Plug Gap

Spark plug electorde gap is 0.9mm (0.035in)
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August 29th, 2011, 10:12 AM   #3
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Re: Spark Plug Gap

Originally Posted by ninayu61
Spark plug electorde gap is 0.9mm (0.035in)
Thanks ninyu61. It comes from NGK at .036, so close enough...
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August 29th, 2011, 11:18 AM   #4
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Re: Spark Plug Gap

Is 0.035 the standard gap for the 4-stroke Husabergs?
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August 29th, 2011, 01:09 PM   #5
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Re: Spark Plug Gap

Originally Posted by Ruger
Is 0.035 the standard gap for the 4-stroke Husabergs?
Yes. 0.0035 is for te 4-stroke (390, 450, and 570).
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August 29th, 2011, 04:45 PM   #6
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Re: Spark Plug Gap

What are the consequences to too small a gap? Too large?
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August 29th, 2011, 08:09 PM   #7
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Re: Spark Plug Gap

Originally Posted by willmia
What are the consequences to too small a gap? Too large?
if gapped slightly wrong will cause misfires, probably 10-20/1000 rpm or so and/or maybe hard starts,or/and power loss, gapped more wrong, more hard starts and more misfires, etc. etc. till it just wont start or restart or run like crap....dwell time, preignition, detonation, blah blah blah... gap them to spec and if you have to make a choice then round up, but too much can cause the above....
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