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Old 21-05-18, 01:16 PM   #1
Geodude
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Default 99 sv650n worm drive failure?

Anyone got insider info on symptoms or the problems associated with the worm drive? So I know whether its knakered or not

So far new cable and clutch (800 miles ago for clutch plates and steels) full sid squid adjustment too perfection and correct slack, then maybe 20 gear changes later no cable slack at all and gears hard to change grr??? All nuts bolts and gubbins tight and happy and unmoved. I have not took the worm drive apart as im not playing hunt the ball bearings

So have you got any experience of this if yes please do tell, no really do tell or its old yeller time
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Old 21-05-18, 01:56 PM   #2
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Default Re: 99 sv650n worm drive failure?

back off the clutch lever adjuster till you get your slack back.

clutch mantra is easier than the guide on here.
simple:
put lever adjuster at mid way.
tighten middle screw till touching.
lock the nut keeping the screw in the same place.
adjust clutch bite at lever adjuster.

yes its that easy, no need to pizz with 1/4 turn out and all that.

remember that the spring retainer goes on top of the mech.
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Old 21-05-18, 02:00 PM   #3
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Default Re: 99 sv650n worm drive failure?

Ta Bibs will give it another try tomorrow as per instructed Why I ask is it works lovely for a bit then just looses its slack and wont change gear well, that's the bit that's got me head scratching?
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Old 21-05-18, 02:04 PM   #4
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Default Re: 99 sv650n worm drive failure?

maybe just bedding in. did you soak the plates in a bucket of oil over night before fitting?

when the clutch mech is fubar its the opposite, your clutch lever goes all the way to the bar without engaging as the bearings are no longer tracking the worm gear.
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Old 21-05-18, 02:10 PM   #5
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Default Re: 99 sv650n worm drive failure?

Yeah did the soak and shizz and its been happy for a good while. Its started being a bit stroppy with neutral/gears so I thought i'd put in a new cable (correct one) and it was ok for about 20 miles then lost slack etc so re-adjusted and again happy for a few miles then no slack or gear changes again grr.

Good to know about the worm drive cheers for that Why cant you live round the corner Bibs
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Old 21-05-18, 02:19 PM   #6
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Default Re: 99 sv650n worm drive failure?

that does sound strange. only thing i can think of is the clutch cable "walking" the adjuster. this happens when the bars are turned left/right and grips the adjuster. mines done it.

make sure that when you lock the lever adjuster you use a pair of pliers to "nip" it up.
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Old 21-05-18, 02:24 PM   #7
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Default Re: 99 sv650n worm drive failure?

Ok cheers Bibs will do my best
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Old 21-05-18, 05:16 PM   #8
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Default Re: 99 sv650n worm drive failure?

See if this helps,

https://cx500.000webhostapp.com/SV650ClutchLifter.html
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Old 21-05-18, 07:00 PM   #9
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Default Re: 99 sv650n worm drive failure?

Cheers for that riffraff I will look into that ta
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Old 22-05-18, 10:10 PM   #10
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Default Re: 99 sv650n worm drive failure?

Quote:
Originally Posted by Geodude View Post
Anyone got insider info on symptoms or the problems associated with the worm drive?
It seizes and snaps your clutch cable 60 miles from home.

As the above, go through the adjustment routines and lube the worm up good.
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