GZ250 'throttle cap tightener bolt'

[5th_bike]

Originally Posted by Easy Rider

A flexible magnetic "pickup" would probably work. I think I'd be tempted to leave it alone.

I got the nut out by putting it on its side, on the lawn, and shaking it a bit. It will just roll out.

[Badbob]

Mark the position on the bars so you can put them back in the same place. A sharpie will work and you can get the marks off with alcohol.

Take out the four bolts in the clamps that hold bars on. There is no need to remove any of the controls.

Tip the bars and shake the nut out.

Reassemble.

[Canuck]

I was curious if this could be the cause of excess "harmonic resonance that would cause a "Buzz" or rattle as you accelerate up through the gears...

I find at higher RPMs i tend to get a loud vibration coming from the front of the engine... I've tightened the bolts everywhere....made little change...and I just added Chain Wax to the drive chain hoping that would stifle those sounds...

nothings worked yet...

anyone else had these Harmonic Resonance Issues?

Thanks All

[Easy Rider]

Originally Posted by Canuck

anyone else had these Harmonic Resonance Issues?

Yes.
It kinda comes with the territory when you have a thumper.......even one that is counter-balanced. If you short shift and ride like a little old lady you won't notice it much at all !! :whistle:

How long since you've had the valves checked?
IIRC, there is also a cam chain tensioner that needs periodic adjustment.

AND here's a really wild idea: If you have any spokes loose, they could even be "singing". :shocked:

[mr. softie]

Canuck...How high are you revving the poor little thing anyway? :roll: It does buzz pretty much at high revs, Do you have a windshield? That can make the noise from the top end seem louder and "buzzier". Also Like Easy said it might be time for a valve lash check /adjustment if the top end is noisy.


Some folks fill their handlebars with lead shot and foam insulation to kill the buzz (not me!). Or better yet try foam or silicone padded grips to lessen the effect of vibration on the old hands and arms. I got some heavy chrome bar ends (see previous post on this thread) which do help. Plus a set of "superbike" cushioned grips that do a better job than stock.

[Dupo]

Originally Posted by Easy Rider

I suggest that you price the parts and make that judgement for yourself. I am skeptical.

Some of us that have LOTS of mechanical expertise tend to ...mmmm... forget what it's like for someone who doesn't. :roll: :biggrin:

I know this is old, but daym .....

1. the bar replacement cost ... 19.99 from a local shop.
2. no one that i could find, sold bar ends 'alone'. Had to be ordered or bought with new grips.
3. bars were more readily available and would solve the problem that day, instead of waiting. worth the 20.00 cost of new bars.
4. mechanic by trade, thanks, just because i saw bars in half doesnt make me or anyone else less experienced.

[Easy Rider]

Originally Posted by Dupo

mechanic by trade, thanks, just because i saw bars in half doesnt make me or anyone else less experienced.

I don't know HOW you got that out of what I said. I meant just the OPPOSITE. :??:

Those who work as a mechanic or have lots of experience as an "amateur" tend to suggest things as "easy" that might NOT be for the novice public at large.

I still don't agree that sawing the bars in half, removing all the levers and controls and then putting it all back together.........just to replace a bar end weight is a prudent thing to do, for the "average" rider, that is. (Come to think of it, why would you have to saw the old bars in half to remove and replace them??? Maybe I'm missing something here.)

I just looked at a parts fische for the GZ and bar-end weights ARE available, only as a set of 2, for about $23 (MSRP) but any 7/8" end weights from a salvage yard should work too.
If you sell off the extra one for ~$10, then your cost is down to about $13 and the actual repair time down to about 2 minutes.

[mrlmd1]

What did you cut the bars with? Are they stainless or just chromed? SS may take a few hacksaw blades, but I bet these bars are just plain steel with a chrome finish.

[mr. softie]

I bought a set of bar end weights at my local bike shop for $10 and put them on in 10 minutes.


Lots easier than removing cutting replacing bars etc IMHO, but then I'm lazy. O_o

[Easy Rider]

Originally Posted by mr. softie

I bought a set of bar end weights at my local bike shop for $10 and put them on in 10 minutes.
Lots easier than removing cutting replacing bars etc IMHO, but then I'm lazy. O_o

:plus1:
I'd call that practical!