Throttle not locking

[Tim-37419]

Found a similar thread in the pre J section but the description doesn’t match the parts on my J.

 

My throttle doesn’t lock anymore and I only found the entire assembly in the IPC. MacFarlene said they don’t have a rebuilt kit. Certainly I’m not the only one who has a worn out throttle. Is my only option to buy a new one?

 

photo attached.

[PT20J]

Are those o-rings or some kind of packing material? If you unscrew the knob and remove the nut, can you take it apart? If so, I’d try replacing the o-rings if that’s what they are. If they are softer packing material, I would see if some standard plumbing faucet felt packing will work.

[Yetti]

Those look like the felt/leather tensioner thingys.

I would get some hole punches and make some new ones out of leather.

Reinstall with new leather ones and and report back.

 

[Tim-37419]

They are but I can't tell if they were o-rings that were crushed in to that shape over the last 40 years or if they are supposed to be xxxxxx - someone help me with the proper geometric term. 

 

Certainly a cheap thing to try though, I'll source some orings and give it a try.

 

I typed the above yet never clicked submit. I'll try both orings and an alternate material like felt or leather. Either of those makes a lot of sense now that I think about it. I will report back with what I learn.

[Tim-37419]

New orings 100% solved the issue.