Thread: Jetting: Part 1
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Old 08-06-2007, 06:50 AM   #20
Jaime
Senior Member
 
Join Date: Jul 2007
Location: Spain
Posts: 102
Quote:
Originally Posted by Easy Rider
Quote:
Originally Posted by Jaime
I've installed the filter above, but it's nearly as restrictive as the original one, so I'm going to buy another with bigger filtrating surface. Then I'll try the jets and maybe I'll start the "Jetting: PART 2" section.
If your bike was sold new in Spain, you may be in an ENTIRELY different situation than those of us in the US and Canada. You probably have bigger jets already.

Well, I just TRIED to look it up in my service manual. Alas, I can't really tell what the carb. specs. are for Spain. It depends partly on what year model it is.

At any rate, the carb mods are only required if you open up the air intake, open up the exhaust a bit and notice a DECREASE in performance (or no change). If you notice a slight INCREASE in performance, then tinkering with the carb. is probably a waste of time.
I posted my jet sizes in this post's first page. I think they're very similar to yours.
About the need to recarb, replacing the original air filter makes the mixture too lean that you can't accelerate the motorbike above 1/3 throttle. That's because the original filter is as intentionally restrictive as it looks. The inner filtering surface is partially covered with plastic!

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