I just bought this 05 WR450f to go dual sporting on and am looking at the jetting as it has a boilover problem and a hard starting problem. Once it's running, it runs amazing, but the starting is bothersome as it won't start with the electric starter. I have to kick it. It also boils over after less than 5 minutes idling in my garage from cold.
I'm familiar enough with tuning 2 strokes. I understand the pilot, needle, main, airscrew, slide and choke functions on my Keihin PWK and PJ carbs.
The Keihin FCR that's on it has a few new features that I'm unfamiliar with. It has an accelerator pump. Yeah, I get that. The airscrew is in a different spot and requires removing the bowl. Goofy, but yeah, I get that too.
I'm cool up to there, but it also has a "starter" jet and a "leak" jet?
I assume the leak jet is associated with the accelerator pump. No?
Can anyone explain to me how these come into play?
I'm familiar enough with tuning 2 strokes. I understand the pilot, needle, main, airscrew, slide and choke functions on my Keihin PWK and PJ carbs.
The Keihin FCR that's on it has a few new features that I'm unfamiliar with. It has an accelerator pump. Yeah, I get that. The airscrew is in a different spot and requires removing the bowl. Goofy, but yeah, I get that too.
I'm cool up to there, but it also has a "starter" jet and a "leak" jet?
I assume the leak jet is associated with the accelerator pump. No?
Can anyone explain to me how these come into play?
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