It’s the little spring that takes up the slack thread. It seems in good nick, slots in to the cog thing but the cog thing just goes round and round so it doesn’t act very spring like.

So from the picture in my post the check spring slots over the cog thing, there is no reistance as the cog just turns hence the spring just goes round with it.

Do you have the correct spring? The old tensioner with the simple adjustment nut takes this type of spring. I couldn't fine any info, but I think the numbered dial version is different. Make sure it goes into place in the notches on the stud, it should hold it in place. Choose a notch that gives it the right kind of spring for the job.

The tail goes in fine but if I touch the spring as though thread was going through it it just revolves and doesn’t bounce back.

The unit doesn’t look like in the pic from your link. Thank you.

Just been watching Ray Elkins on YT, he’s doing the same unit, tomorrow I’ll try the spring in each groove of the cog and see if I get the right result.

Thank you all for your help.

Goodnight.

Oh, I made a mistake and posted a pick for a 201, which has the numbered dial. The spring should stay in place though, with a spring action. This is how the parts on the old type looks like.

I have the numbered dial Mickey with the - and + too.

Here it is before the service and repair.[ATTACH=CONFIG]593146[/ATTACH]

[ATTACH=CONFIG]593148[/ATTACH]


Aha, give this a try. If the tension stud ( cog thing) it moving with the spring, check at the red arrow and see if you can tighten the set screw that should be there. That should secure the stud. This is not a 99 but you should have a similar one. and BTW the tension studs come in two different sizes.