CRF150R: Throttle Sticks

Good day. I have a 2007 CRF150R that has developed a 'sticky throttle'. The throttle is hard to open, and once open, sticks in that position. I have lubed and checked the cables and tension and can not see any problem there. The problem first appeared only when the bike was running, now it happens while off as well. Looking for any thoughts or suggestions. I appreciate your assistance. Thank you.

disconnect the cables from the carb and manually turn the "pulley" to open the slide to see if that sticks. If the slide snaps back nicely without the cables attached then it's the cables or throttle tube. If not it's in the slide somewhere.

Make sure your cables are routed nicely and not twisted. Clean the throttle housing and assemble with no lube (that just attracts dirt anyways)

disconnect the cables from the carb and manually turn the "pulley" to open the slide to see if that sticks. If the slide snaps back nicely without the cables attached then it's the cables or throttle tube. If not it's in the slide somewhere.

Make sure your cables are routed nicely and not twisted. Clean the throttle housing and assemble with no lube (that just attracts dirt anyways)

Ok, did that and the pulley seems to have a 'catch' in it; it takes something of a push to get it to move, and either sticks in position, or comes back into place very slowly. Any thoughts on what may be behind the pulley that coulde be the problem? Thank you.

Gotta pull the carb and take the slide apart. Take the cover off the top and then you need to remove the torx screw that holds the lever arm that lifts the slide. Then you can pull the whole slide out and the shaft also. Just make careful note of where every thing goes and which way the vaccuum break plate on the front of the slide is oriented. Clean everything and lube the bearings with white lithium grease. While you're at it you might as well disassemble the entire carb and give it a real good cleaning with brake cleaner and an air gun.

Terrific; thank you very much for your reply. I will give it a shot!

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