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2001 Nevada 750 gearbox issue

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asharin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asharin Quote  Post ReplyReply Direct Link To This Post Topic: 2001 Nevada 750 gearbox issue
    Posted: 02 Nov 2017 at 17:13
Hey all, hope you can help :D
As you may know from earlier posts I recently came into possession of a Nevada 750 (2001 reg) and while the guy I got it from assured me that all oils etc had recently been done, I found this was not the case.  Anyway once the bike has gone about 10 miles and well and truly warm, the bike has issues with changing gear.
Basically, if I go up a gear, I'll have to manually nudge the lever down with my foot otherwise I won't be able to go up a gear, and if I drop down a gear, I'll have to manually lift the lever with my foot, or I can't go down a gear.  Thinking it could be an issue with the oil, I emptied it, and a nasty smelling gray/green sludge came out....so I'm guessing that's been in there a long time!  Replaced with fresh oil, and sure enough the gear changes are MUCH smoother!
However, the above issue still remains, any idea what it could be?  If it's something simple I can probably fix myself so I hope it is, don't fancy paying garage rates :D
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johnno View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johnno Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2017 at 18:03
Years back I rode a BSA 650 which had the same problem it's the return spring broken / selector arm I rode for some 30 000 miles like that . Hope someone comes along with the information to repair . Don't push your luck like I did

Edited by johnno - 02 Nov 2017 at 18:22
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2017 at 21:48

It does sound like the internal return spring has broken.

Unfortunately this means pulling the gearbox off the bike and going in..
Brian.

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asharin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asharin Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2017 at 23:20
Hmmm I was afraid it might be, so I did some reading...garage it is then, that's way beyond my mechanical knowledge :(
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2017 at 07:55
I suspect the seller knew of the problem and it may have been the reason for sale. From what you said, he clearly wasn't that truthful about the oils being changed.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2017 at 13:01
THE go to guy who WILL NOT rip you off for gearbox stuff is Nigel at NBS ..he is the very best and does not charge the earth , often if you take it elsewhere they send it to him anyway ..... I bought a service exchange big block gearbox all sorted for £150 last year .... well worth it ....
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2017 at 21:50
"once the bike has gone about 10 miles and well and truly warm" - so it works OK when cold?


"Chicken nuggets don't dance on a Tuesday."
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asharin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asharin Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2017 at 00:23
Originally posted by Mike H Mike H wrote:

"once the bike has gone about 10 miles and well and truly warm" - so it works OK when cold?



correct, it works fine to start with
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2017 at 10:12
It seems unlikely but I wonder if someone has shimmed the selector drum; Badly.Various different rates of expansion in the gearbox as it heats up taking up the necessary clearance thus preventing free movement of the drum.A long shot I know.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote rapheal Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2017 at 14:06
Take the motorcycle to Nigel at NBS as others have said, let him check the machine over and find any other issues that the seller forgot about
be better to sort any other hidden issues now and have it ready for the decent weather
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asharin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asharin Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2017 at 15:59
Where is this NBS?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote red leader one Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2017 at 16:01
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