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General => Technical | How To => Topic started by: Togger on June 15, 2017, 04:27:36 PM

Title: Rounded off drain bolt
Post by: Togger on June 15, 2017, 04:27:36 PM
Trying to remove the bottom oil drain bolt on my Bet and Win 250, I accidentally rounded off the nut. Fortunately I got the side drain open and changed the oil. How can I now get the bottom nut open, or can I take it to someone to do it?
Title: Re: Rounded off drain bolt
Post by: MJR on June 15, 2017, 05:29:16 PM
In some cases you can lightly hammer on a slightly smaller 12 point socket.
Title: Re: Rounded off drain bolt
Post by: Mr. Paul on June 15, 2017, 09:56:25 PM
A good quality set of vice grips.
Title: Re: Rounded off drain bolt
Post by: hypophthalmus on June 15, 2017, 11:16:09 PM
You may need to drill it and use a screw extractor.
Title: Re: Rounded off drain bolt
Post by: Stig / Major Tom on June 16, 2017, 01:52:21 AM
The large cap-with-nut thing with the spring and thimble shaped screen behind it - are notorious for rounding off because they are tightened too much, and made of junk metal.

All the above suggestions are on the list....along with the reminder that it is delicate metal. It can split, break or ? if you get too frisky with it. Scooter shops are used to dealing with it.

Also, bear in mind....95% of us never find anything in that screen worth worrying about. Some folks never remove it after initial engine run-in -- for just the reason you are experiencing!

So, use the other drain to renew your oil....and don't worry about that other thing. Just a thought.

If you do get it off, these GY6 things (with rubber O-ring, screen and spring) sell for a couple bucks on ebay. I keep a spare kit.

Stig