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Related Garage

Yamaha YZ400 1999.JPG

Yamaha YZ400F (1999)


Owner: Thumpacular
Added on January 18, 2017
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Oil filter drain bolt stripped


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30 replies to this topic
  • rjcook450

    TT Bronze Member

246 posts
Location: Idaho

Posted June 17, 2009 - 08:04 PM


does the oil drainhole dead end, or does it lead some where, just want to know if metal shavings from drilling and taping can get into engine.
is it ok to do this fix with case still on engine?
thanks

  • PAdaytonaman

    TT Bronze Member

350 posts
Location: Pennsylvania

Posted June 18, 2009 - 04:53 AM


BTW something that I do at each filter change is run a slim bar magnet up into the bottom bolt hole and capture any shavings and it works great. John deere sells these magnets for the suction screens on the hydro tractors.

  • grayracer513
43,164 posts
Location: California
Garage View Garage

Posted June 18, 2009 - 08:29 AM


does the oil drainhole dead end, or does it lead some where...?

The hole goes straight in to the primary case. If doing the repair with the case in place, use grease on the drill and tap to control the chips. There is a risk in doing it that way, but it's small.

OTOH, this is just another reason why you should prevent this from happening in the first place:

http://www.thumperta...ad.php?t=634724

  • rjcook450

    TT Bronze Member

246 posts
Location: Idaho

Posted June 18, 2009 - 06:19 PM


ok thanks, have time sert ordered, when it arrives i will be doing this, hole isnt stripped yet, but its getting close.

  • fishnutz

    TT Member

44 posts
Location: Utah

Posted June 19, 2009 - 08:07 AM


Helicoil kit from NAPA: $85 bucks! Took it to the dealer, kid at the front desk told me at least $70 (1hr labor) plus parts. They use time-sert, hope they do a good job. These prices are ridiculous.

  • Aka.Goose

    TT Gold Member

1,259 posts
Location: California
Garage View Garage

Posted June 19, 2009 - 09:54 AM


ok thanks, have time sert ordered, when it arrives i will be doing this, hole isnt stripped yet, but its getting close.

If the hole isn't stripped yet, why don't you just retap it and then do the bearing mod to prevent it from getting worse?

  • Aka.Goose

    TT Gold Member

1,259 posts
Location: California
Garage View Garage

Posted June 19, 2009 - 09:56 AM


Helicoil kit from NAPA: $85 bucks! Took it to the dealer, kid at the front desk told me at least $70 (1hr labor) plus parts. They use time-sert, hope they do a good job. These prices are ridiculous.


Crazy prices...Just be sure they know that hole runs back to the case...I'll guarantee you the service shop isn't going to be very careful about shavings getting back there...

  • Aka.Goose

    TT Gold Member

1,259 posts
Location: California
Garage View Garage

Posted June 20, 2009 - 09:35 AM


I don't know about you guys, but I think this is the way to go...
Posted Image

  • natehawes

    TT Newbie

22 posts
Location: Utah

Posted June 20, 2009 - 03:28 PM


Completed the Time-Sert fix yesterday, rode today....no problems. And as an added bonus, the Time-Sert insert also blocked the drain hole. So I should have a permanent fix.

Thanks for the help and suggestions.

  • rjcook450

    TT Bronze Member

246 posts
Location: Idaho

Posted June 20, 2009 - 05:03 PM


If the hole isn't stripped yet, why don't you just retap it and then do the bearing mod to prevent it from getting worse?


well???? too late already have time-sert.

  • Matt Goddard

    TT Member

47 posts
Location: California

Posted December 12, 2016 - 07:39 PM


Mine seems to be stripped as well, It's spins when I use a ratchet, and I don't want to keep trying.

I don't really want to mess with a time sert, being that I've never done it before. Can it stay that way if it doesn't leak oil?





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