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Post by clint1974 on Jun 26, 2006 14:20:49 GMT
Well my T5 failed its mot on a sticking throttle cable. It seems to stay on when you rev it. Has anybody taken one apart before? I am going to give the cable a good spray with wd40 but i suspect the throttle grip is a at fault.
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Post by Spence on Jun 26, 2006 19:00:23 GMT
The T5 sitting in my garage doesn't have a return spring on the throttle grip, nor does the Sprint 150, so they both stay on when you rev them, and they've both passed MOTs.
I'm not sure about the T5, but the Sprint doesn't have a return spring because it pre-dates indicators and you need the throttle to stay open so you can do a right hand signal without pitching yourself over the handlebars.
The first time we took the T5 for a once-over at a trusted scooter dealership/garage, I asked them about it and he said quite a lot of the older models don't have return springs on the throttle.
Sounds to me like your MOT inspector doesn't know his arse from his elbow.
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Post by bryno on Jun 26, 2006 21:01:39 GMT
The throttle on my T5 classic closes by itself, although it is a bit lazy for the first fraction of a turn of the grip, not sure about having a seperate a return spring, but the spring on the carb seems strong enough to do the job..
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Post by Spence on Jun 26, 2006 21:56:39 GMT
The Classic's later than the Mk1 though which might have something to do with it. I thought the Classic was basically a PX frame with a T5 engine in it, or am I wrong?
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Post by clint1974 on Jun 27, 2006 6:47:13 GMT
Interesting comments, mine's a 1998 model for your info. I do think the mot testers were a little harsh though. But then at £23 for a re test i suppose its there duty to find something!
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Post by bryno on Jun 27, 2006 20:02:11 GMT
It's a classic then, so it 'should' be same as mine and shut down by itself..
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Post by Smallframe on Jun 30, 2006 13:43:29 GMT
they should all spring back based on the spring in the throttle body on the carb. probs will be either a really old dry cable, a kink/split in the outer where it enters the carb box, but the most likely cause is a dried out throttle rod particularly were it passes thru the headset. weather beaten, crud filled and over zealous jet washing can all be contributing factors to removing the grease to aid smooth operation. i did some work on a scooter that had been leaned against a wall cos there wasnt a stand and the throttle rod was bent, stopping a smooth return.
the routing of the cable on my carb takes a mad twisting route and still returns, courtesy of mountain bike gear cable.
if all else fails and you can't be arsed changing the cable, then doubling up on return springs may do the job
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