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Old September 7th, 2017, 08:55 PM   #60
Ram Jet
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Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017

Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500

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Quote:
Originally Posted by JacRyann View Post
The pre-gen and new-gens have completely different jetting specs. So don't get them mixed up. And it's possible to be both too rich AND too lean on SAME bike. It's a matter of where in the operating-zones the mixtures are rich and lean. Thus the adjustments needed will vary as well.

Aside from the valve-clearance check, I'm not sure if main-jet changes would do much for your MPG. You may get better results from adjusting pilot-screws. Those plugs look rich, but not as rich as my street-bike under WOT.
I run 110 mains and get 235 miles to reserve. You might be right but an increase in mains does result in an increase in fuel throughout most of the operating range. Hence no shims on my carbs?

Bill
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