F4 sticknig throttle - MVAgusta.net
 
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post #1 of 6 (permalink) Old 09-12-2007, 05:44 PM Thread Starter
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F4 sticking throttle

Hey guys havent been on much lately, been terribly busy.

Anyway I got a chance to go riding last weekend and notice that my throttle does not return to 0 position, it sticks. Mind you I had previously released the left-side throttle spring to relieve pressure on my wrist whilst riding. Well, now it doesnt return to the 0 position. This really appears to be a mechanical (lubrication?) issue and does not relate to engine throttle sticking (what I mean is, it appears to be the cable or handle or something).

I did a search on here and didnt find any relevant posts. Anyone have this issue and know how to resolve it? I am sure if I put the 2nd spring back into tension the throttle would return, but then Im stuck with the stiff wrist problem. After I first released the spring, the throttle returned normally, but it no longer does.

I feel as if a squirt or 2 of WD40 somewhere might do the trick. Thanks in advance for any advice you might have.

Last edited by Obmot; 09-12-2007 at 05:54 PM.
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post #2 of 6 (permalink) Old 09-12-2007, 06:11 PM
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Similar thing happened to me. Mine was a simple fix - the rubbery part of the throttle had slipped onto the bar end. I drove the bike to the shop and all the guy did was slip the rubbery part back into place.

May not be the same problem as yours, but worth a look. Good luck!
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post #3 of 6 (permalink) Old 09-12-2007, 06:19 PM Thread Starter
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thanx Brat that just might be the problem since thats exactly what it felt like and I kept eyeing the rubber handle. I'll give it a look when i'm out next.
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post #4 of 6 (permalink) Old 09-12-2007, 07:31 PM
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Quote:
Originally Posted by Obmot
Hey guys havent been on much lately, been terribly busy.

Anyway I got a chance to go riding last weekend and notice that my throttle does not return to 0 position, it sticks. Mind you I had previously released the left-side throttle spring to relieve pressure on my wrist whilst riding. Well, now it doesnt return to the 0 position. This really appears to be a mechanical (lubrication?) issue and does not relate to engine throttle sticking (what I mean is, it appears to be the cable or handle or something).

I did a search on here and didnt find any relevant posts. Anyone have this issue and know how to resolve it? I am sure if I put the 2nd spring back into tension the throttle would return, but then Im stuck with the stiff wrist problem. After I first released the spring, the throttle returned normally, but it no longer does.
I feel as if a squirt or 2 of WD40 somewhere might do the trick. Thanks in advance for any advice you might have.
Try slightly loosening (backing out) the bolt at the end of the bar which secures the counter-weight. Slight over-tightening causes the internal wellnut to overexpand and bind, thereby preventing full throttle release.
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post #5 of 6 (permalink) Old 09-12-2007, 08:02 PM
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It was a pretty nice thing to have on the freeways though - CRUISE CONTROL !!!

But sucks big time on the twisties.

Hope that's it cuz it's a quick fix. Good luck!
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post #6 of 6 (permalink) Old 09-21-2007, 10:14 PM Thread Starter
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Quote:
Originally Posted by lewolfmd
Try slightly loosening (backing out) the bolt at the end of the bar which secures the counter-weight. Slight over-tightening causes the internal wellnut to overexpand and bind, thereby preventing full throttle release.
This worked perfectly, I loosened the end bolt a bit and all was back to normal. Thanks lewolf.
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