Oil drain thread

[stonerosesmod]

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?

[GLscoot]

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.

[Shaunbond]

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

[stonerosesmod]

Yes i think thats the way forward.Cheers lads

[ducksta]

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

[GLscoot]

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.

[Shaunbond]

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.

[ducksta]

will re tap to m8

[gaz_powell]

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)

[Shuggie]

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