110 1985 auto clutch sticks when hot

[tri again]

Trying to get trikes ready for sale due to family emergency.

Have a great (theftproof ugly) 110 with trailer hitch and rear racks.

Starts, runs great but if I run it hot, say an hour or so, it wants to go into
'direct drive'.

slow down and it stalls like it's in a regular hand clutch gear.

cools down and runs great again.

Thinking about trying the 'right' wet clutch oil but everything I've read
says 10-30 or 40 is what the manual requires.
My 10 other semi auto Honda trikes do not have this problem (yet).

Thanks everyone.

[oscarmayer]

well couple of things, it could be the disks are so worn that the material is not there anymore, or the auto-clutch is worn you have bad shoes there.
I would first start with replacing the clutch and discs on the normal clutch side. if that doesn't work, then you will have to investigate the auto clutch.