Suzuki GSX650F Forum - www.GSX650F.biz

My mrs was getting a bit annoyed at the end float of the throttle tube (RH grip) as it was causing a small amount of what I call bump throttle while trying to cruise at a steady speed.

This is how I went about fixing the problem on her GSX650F

Disclaimer:
Before I start I have to say that I have taken all care to create this how to but I will not take any responsibility if you decide to use this info to do it yourself and cock it up causing the bike to have to visit a shop for repairs.
If you are not confident - DON'T DO IT

1. Remove the RH bar end weight. DO NOT undo the screw all the way. You only need to undo it until the bar end can be rotated, then pull it out of the bar. If it doesn't come out, loosen it a small amount more.
This is what you are removing


2. Separate all the parts and lay them out in order (this aids in reassembly) Be very mindful of how the steel washer (second from right in my picture) is fitted as it is not a flat washer.


You are interested in this bit


Notice how it is stepped (the pic may not be so good, but if you pull it out, you'll see it is)

3. Find a washer that will fit over the larger diameter part of the rubber piece. I used a fiber washer suitable for carbies as I could fine tune the ID to be a good fit


4. Fit all the parts back together keeping in mind the way the steel washer was fitted originally



5. Fit it back on your bike be mindful of checking the throttle action when your done. You want absolutely NO binding. If you do get some, loosen the bar end and tighten it again

Ride safe

could you please explain "end float" and what you mean by throttle bump. As always, great instructions and pictorials. Kudos to you!

That's a good idea, the grip floating in and out drives me crazy!

End float - The sideways movement of the throttle tube (RH grip)

Throttle Bump - When trying to maintain a steady speed, if the bike hits a bump the throttle hand can increase/decrease the input causing the bike to slow down or speed up just a little bit and for an instant. IMO it makes the criusing a little jerky at some times depending on your wrist control and the size of the bump.

I won't cure this phenomenon completely, but it goes a long way.

I've had it done to my Bandit for a while now and the difference is quite noticeable IMO

Thank you, just wanted to be sure I didn't misinterpret anything.

Stellar post! I'm going to refer to you and GSXFun as 'Doc'. You two are definitely experts of bikes and have the tools to back it up. Much thanks again.

Sadly, images are not displaying...

Not sure why not however there has been similar probs in the past where I had to repost the pics.
I don't think I have the pics anymore and I don't have a GSXF/bandit anymore so difficult to take more.
I'll check and see what I can do

Pictures justr drop off after a year or so.
See our Avatars just stoped working...guess its to save webspace.

Haven't been able to find any of the original pics and since I no longer own a GSX650F or Bandit I can't take more pics for you to see.

If you have a look at this schematic you will see item #4. This is a rubber tube that has a step at the outer end. What I did was use a fibre washer (1/16" thickness I think but I'm not 100% sure) and fit it over the outer, larger OD part of the rubber tube. This had the effect of reducing the end float of the throttle tube once fitted all back together.
Using a fibre washer made it easier to fine tune the ID using a round file as I couldn't find one that was a spot on fit.
Be sure to check that the throttle is not sticking or slow to return to idle if you do this mod as this can mean that the fibre washer is causing the problem due to being too thick.