Before it does what mine did.

Sorry for the blurry pic. It's the bracket being held on by that single phillips screw. It locates on a little post (the cable passes right in front of it in the pic) cast in the carb, opposite the choke. The post broke, the bracket moved, and was binding against the bellcrank. I was able to get only half throttle.


This is the piece that broke off.


I'm not sure why this happened, but I noticed something else when I was working on it. The boot from the air box was off the carb at the back. The best I can figure, is when I busted up my ankle last July, the bike came down on it in the side cover/air box area, and maybe the force pulled/jarred the boot from the carb. This allowed the carb to move, and the bracket to hit the head, and break the post.

I epoxied the post back on last night, added a piece of aluminum to the part the sits under that vac line (so it really can't move anyway), and used a socket cap screw that I was able to tighten a little better than that screw.

Anyway, have a look at yours, and make sure it's ok.

 

So I just got back from a few hours in the woods. This thing must have been loose since last year, preventing full throttle, and gradually getting worse. Holy cow, the bike feels like it's turbocharged now, and I don't think it's the new K&N filter I just put in

I was thinking big bore and cams, but maybe just cams now.

 

Niceee.

 

Turbocharged??? That thing must have been really loose.

Thanks for the heads up. That's a good reminder to check everything on the bike. Last winter I was surprised to find that all the bolts holding my rear sprocket on were loose!!!!

 

I need to go through my bike. I have not since I bought it (torque things) but the manual does have a diagram that I am going to use for the purpose.

 

i'd be worried about the carb boot being off. Can't be good to have dust getting to the motor.

 

It was off, but pushed tight against the end. Unless it was moving while I was riding, no dirt was getting in.

 

OMG! one of your throttle cables is MIA!

I have fought with that cheezy bracket that is screwed to the carb. It can be a bugger to get on just right and then get the phillips screw to catch properly.

 

ZW, I also notice on the air boot that the shock spring and/or preload nuts can sometimes touch the boot and/or clamp in extreme bottomout situations. Some of this depends on the position of the airbox when it was tightened down, and the side play or position of the bushing in the shock.

 

I didn't like the possibility of that little screw coming loose myself... so, after I completed my jetting changes, I put some Lok-Tite on the screw before reassembling it. Based on your experience (OP) I guess it was a good idea. :-D