503 Sparkplug gap ?
Posted: Tue Apr 14, 2009 1:30 pm
What is the correct gap please ?
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503 Sparkplug gap ?
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Re: 503 Sparkplug gap ?
Posted: Tue Apr 14, 2009 2:40 pm
What worked best for me was anything between 0.4 and 0.5 mm, otherwise you battle your arse of to get it started when the engine is hot.
Re: 503 Sparkplug gap ?
Posted: Tue Apr 14, 2009 5:46 pm
Rotax manual says gap should be 0.5.
My AP recommends 0.45 says engine starts easier.
My AP recommends 0.45 says engine starts easier.
Re: 503 Sparkplug gap ?
Posted: Tue Apr 14, 2009 6:17 pm
Thanx ! 
Re: 503 Sparkplug gap ?
Posted: Tue Apr 14, 2009 8:47 pm
I have flow thousands of hours at .45 setting with no worries. Jamie
Re: 503 Sparkplug gap ?
Posted: Mon May 11, 2009 3:11 pm
Hi
Don't the preset the gap setting?
I buy them and install them as they come.
If you do not flood the carp with second pull, it starts with no prob.
Regards
Don't the preset the gap setting?
I buy them and install them as they come.
If you do not flood the carp with second pull, it starts with no prob.
Regards
Re: 503 Sparkplug gap ?
Posted: Mon May 11, 2009 3:34 pm
no they don't. It's normally too wideLuther wrote:Don't they preset the gap setting?