Yamaha TRX850 Enthusiasts Forum

Ok, having a bit of a mental blockage here but....

..with the tank off, when I twist the throttle, the black plastic slides in the two carbs should slide up (open) shouldnt they?? Or not??

Mine dont.

On std carbs no the cables operate the butterflies and the slides open via a vacuum as the air passes through the carbs. On FCR's yes.

trixynut wrote:Ok, having a bit of a mental blockage here but....

..with the tank off, when I twist the throttle, the black plastic slides in the two carbs should slide up (open) shouldnt they?? Or not??

Mine dont.

Kenny`s right CV carbs rely on vacuum to lift the slides.
You can push them up with your fingers through the carb mouths to see if they`re free though.

Ah, brilliant thanks, so mine arent broke.

...I've obviously been messing around restorng two stroke motocrossers for too long!