I put the clutch on my M20, and followed the really useful guide on this forum.

The rear wheel chain and primary chain are fitted correctly. My gearbox which I had refurbed professionally is jammed solid and will not select any gear. I took the outer cover off and also the feed pawls. And tried to select it on the top selector. But stuck solid.

Any thoughts or advice as totally stuck now what to do.



Thanks in advance.

Danny

email (option): dannyburt152@gmail.com

Did the gearbox shift on the bench? Will it shift if you spin the rear wheel?

And maybe my old eyes, but I don't see the kick start ratchet spring?

And finally, is the person who "professionally restored" the gearbox familiar with the WM20. If not it is probably shimmed wrong.

Is the clutch hub binding on the mainshaft.
It might be worth while taking the clutch of before doing a lot more work.

Mark

email (option): pes.sales@btconnect.com

Does it shift with the spanner on?Maybee the selector is mounted wrong..it is the part were you put the spanner on in your picture

If the gearbox selected all the gears before you fitted the clutch then I think as Mark has said you have locked the mainshaft to the sleeve gear with incorrect parts between the clutch hub and the sleeve gear.

Hi all,

I think I have solved the problem! I stripped the clutch, as advised. But that is fine…..

Into the box, and after reading the manual it talks of the selectors getting seized. And they were solid! Not sure if lack of use. So took them off and cleaned them up. Will add some Amsoil lube to keep them fresh.

Thanks for everyone’s help!

Regards

Danny

email (option): dannyburt152@gmail.com

Sack your 'professional'...Ian

email (option): ian@wright52.plus.com

Wise words Ian 😂

email (option): dannyburt152@gmail.com

I have stripped the gearbox and looked at all the bits inside and gears. Stupid question ..... The pegs, looking at the manual I can see the peg nearest the clutch side sits in the bottom front slide face.

The peg nearest the gearchange, it says evenly spaced. Can anyone explain what this actually means, and if the peg needs to be set in a certain position? I just can't understand why it is - was jammed. I have no clutch fitted and all fitted inside correctly. Can only assume the dog and pegs need to be set some certain way.

Again, so sorry for the stupid question and plea!

Thanks in advance.

Danny

email (option): dannyburt152@gmail.com

Did you assemble the gearbox correctly with the gear cluster set in the 4th. (top) gear position?....Ian

email (option): ian@wright52.plus.com

Help sent Danny,

Mark

email (option): pes.sales@btconnect.com