AUTO & MOTO ARTISANS - AUSTRALIA
The XR600R ‘carb issues’ page has been updated following an inquiry from a guy in Guatemala. Despite really lean jetting his bike was still running rich and showing carbon deposits on the exhaust. After running through the usual suspects (bad rings, float bowl level, stuck float valve), it struck me it could be an atomisation problem and there was an outside chance it was something simple like a blocked breather tube.
Turns out the breather tube was blocked, but it led to some chat about the three small air inlet passages you find on the inlet side of the carb at the base of the bellmouth – issues I’d either glossed over in the ‘do the maintenance’ section or hadn’t really covered in any depth.
So, there’s now a more detailed explanation of what they do and how to check ‘em. You’ll find it on the increasingly lengthy XR600R ‘carb issues’ page (I’ll get around to making a bit more mobile-friendly one day).
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