Honda-SOHC

1976 Hondamatic with transmission damage. I think the cause may be a seized sprag clutch in the gear assembly (in the transmission) that drives the turbine in the torque converter and is driven by the kick start. The assembly has a large and a small gear and a large bearing and is on the mainshaft. I can only guess that the mechanism (three springs and three rollers) I can see, but can't get apart, is a sprag clutch that would allow the kick start gears to turn the motor but not drive the kick start gears in the other direction. Please does anyone have one of these units in pieces and could check the function of this part. I don't want to buy a replacement to find it is the same as mine (both gears seem locked together). HEELLLLPPP!!!

This is the crazy new member that has a Hondamatic. Thanks for all the interest and involvement. As one of you hinted at, I do know a thing or two about CB750s. I bought my first in 1969 from Elite Motors in South London. I went in to buy a mirror for my 6 month old Trident, and came out with a red CB750! I let a friend have a go about three weeks later and he proceeded to write it off trying to round a bend at 100 MPH. He survived, but the bike did not.
There were no more red ones in the UK so I ended up with a blue one (the insurance in those days seemed to cover the bike, rather than who was riding it).
Since then I have had a host of bikes and restored many classics. I thought I would have a go at the Auto, as it was so quirky. So - I am not a complete lunatic, but I do need some help with this one, due to some of the bike not being there.
If someone could forward Hondaking's email address to me, that would be greatly appreciated. Thank you all for your input and interest.

Having had, worked on and restored CB750s (since 1969!) I took up the challenge of a Hondamatic. Bought a bike, unseen, but it turns out someone has removed the anti-stall device (and associated solenoid and airbox). Has anyone run one of these without the anti-stall? The carbs are 28mm, not the usual 30mm as per the manual version.
I don't want to waste a year minting the bike if I can't get it to run right. The parts required seem to be hard to find - also there doesn't seem to be the parts on the linkage to connect to, in any event.
If anyone else has one of these, I would appreciate having a look to see exactly what is required. I have even considered manufacturing the parts, if that is the only way out. Any help much appreciated.