Good evening all. 

after my ignition spark success I thought I would give the bike a go.  Fuel on. Couple of light kick overs to hopefully get some fuel going. Motocross boot on and  Went for it.  Mechanical noise from clutch side case best described as a type of clunk and a smell of a potential “pop” and kick start returned. Now won’t engage to turn engine over. I am due a break with this bike. 

kick start just rotates without engaging.   Removed clutch cover.  Kick start gear turns ok.  The gear that engages with turns ok.  That gear disappears behind the clutch.  It is here the problem is. It turns without engaging until it’s done a full engine cycle then tries to engage but seems to slip out of mesh with whatever it is. Clutch seems to jump forward a few mm. Then the gears just turn not engaging with anything. Repeat. 

I don’t know what it’s not engaging with or why. I guess it’s a clutch off job?  I have tried to attach a photo. Gears 1 and 2 turning ok. Whatever gear 2 engages with is the issue.  

it’s a test of my patience this bike. All pointers, as always, welcome.  

thanks. 



share.icloud.com/photos/0a725MW1oK89smX1ZBpDBdPJA

Have a linked my whole library or just one photo? Could someone let me know please?

I can only see one photo.

Sorry should have said 1970 RT1.

Not sure if I can change a thread title. I can’t see how.

Thanks

Fixed title.

Sounds like gear behind the clutch broke?  (#18 here: www.partzilla.com/catalog/yamaha/motorcy...970/rt1/transmission)

Thanks markt. Appreciate the title change.

You must all be sick of me. Could it be part 17 the circlip? On inspection after your suggestion the clutch basket moves outwards as a complete item effectively disengaging that gear you mention. If I push the basket back towards the cylinder the gears seem to engage and try to turn but the basket jumps forward and it disengages. Not a great description but hopefully you know what I mean

Will have to remove the clutch and take a look. Do I need special tools for the clutch removal? Sorry, being lazy. I can’t see how look up that process.

i wonder if the clutch basket nut is loose?  Soon find out I guess.

Many thanks. Ian