Crankcase Oil Drain Bolt Size?

3 replies to this topic
  • timcosco

Posted August 29, 2002 - 06:53 AM


What is the size of the crankcase oil drain bolt on a '98 WR400F?

The original is stuck and will require an EZ-Out to remove... that means a trip to the hardware store at lunch today. No time to get to dealer for new drain bolt, so will pick up a normal bolt and use that instead (just for the weekend).

  • timcosco

Posted August 29, 2002 - 06:56 AM


AUGH! Yes, I'm a dumbass for not doing a "Search" first. Looks like 12mm, eh?

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  • wrsm

Posted August 29, 2002 - 11:31 AM


Its a 12mm x fine (1.5mm pitch?) thread.
16mm thread length.
12mm AF head size, with a 22mm OD of the washer.

Hope this helps

  • Jekel

Posted August 29, 2002 - 04:54 PM


It is a 1.5 pitch. Took 3 weeks to get the right heli coil when I stripped the thing out. Always use a washer under the magnetic bolt.....


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