Scooterotica

A mates bought round his PX200 engine for me to give a once over internally and he said the gear oil drain plug threads are knackered.Whats the easiest fix here? Could i tap out to the next size or even M8 and use an appropriate fibre washer?

The thread is already M8, its just you need a M7 socket head to remove it. I would try and keep it M8, the next common size up is M10, not a lot of M9 suppliers out there unless you go imperial.

You might be able to get away with an M8 helicoil. I'm not sure which pitch it is but no real difference in drill size.


http://www.thorintl.com/Drill-Sizes-Hel ... tric.shtml

Yes i think thats the way forward.Cheers lads

Similar advice required my m8 has stripped the threads on a px200 its the hole in casing where you fastern the carb down any suggestions ime off to have a look tonight but was thinking would a collet be any good

ducksta wrote:Similar advice required my m8 has stripped the threads on a px200 its the hole in casing where you fastern the carb down any suggestions ime off to have a look tonight but was thinking would a collet be any good

Im sure thats M7 so could be retapped to M8.

ducksta wrote:Similar advice required my m8 has stripped the threads on a px200 its the hole in casing where you fastern the carb down any suggestions ime off to have a look tonight but was thinking would a collet be any good

Same thing happened on my Cosa. I helicoiled that but I'm sure it was M7.

will re tap to m8

The carb bolt thread in the casing is 7mm - don't forget if you tap it to 8mm you will have to do something with the stud and sleeve bolt (early) or shouldered bolt (later)

Beedspeed do a stepped stud, 7mm on one end 8mm the other, just tapped casing to 8mm and it worked a treat! Think its soldas a lammy chaincase stud