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Join Date: Nov 2007
Location: Chandler, Arizona
If you are talking about the fill plug, it is now ruined. Try visegrips on it, but don't squeeze it to tight. You will need a new plug now, the main thing is not to damage the threads in the final drive housing. It must have been overtightened, mine always comes right out. It is made of super soft aluminum. I always use a box end wrench on it. There is a non metric size that fits it perfectly. I also put one of those blue paper/cloth shop towels like you can get at Walmart in rolls between the wrench and the plug, that makes the wrench fit super tight and protects the plug from being chinked up by the wrench.
I would not drill it out, to much chance of getting drill bit shavings in the final drive gearcase.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike