Oil Tank - Drain Plug (damaged threads)

[pnl]

In my manual it says:

Replace drain plug in oil tank/swingarm after oil is thoroughly drained. Use LOCTITE 565 OST THREAD SEALANT on fastener and tighten plug to 26-29ft-lbs(35-39Nm).

Now i used a torquewrench and adjusted it to these specs.. but i never felt the click and got worried.
So i unscrewed the plug and found that the threads fell off.

What do i make of this, has the workshop damaged it when they did the service on my bike, or is the torque specs wrong?

 

[nilla]

25 ft lbs is plenty tight. especially with thread sealant.

it is easy to strip the threads/crossthread. it happens. i'd say get a time-sert or helicoil or the like

now there's pretty much no way to pin it on the last mechanic that touched your bike.

 

[Mope]

Lots and lots of threads on stripping out the drain plug threads. General concensus is not to use a torquewrench and that the manual specs are too high.....Sorry, but it doesn't sound like this was the prior mech. A quick search pulls up a bunch of those threads if you want to look.

 

[netty2424]

Book is wrong!!! Those specs are incorrect! It's happened to many people here on the forum. I lost a couple threads as well, but luckily realized it was too deep and caught it in time before too much damage was done. I just use a little extra lock-tite.

 

[RT Performance]

Just thread sert it. Specs wrong only need half that.
If u happen to still be under warranty you might be able to get it coverd.

 

[anrkizm95]

install a time sert or a over sized piggyback plug

 

[kuterba]

Yup, had the same, but with the fuel drain plug, not only was the thread messed up, also the actual bolt...

luckily I had the bolt remover (best purchase so far!

http://www.screwfix.com/p/irwin-5-p...ive-_-Irwin 5 Piece Bolt Grip Nut Remover Set

 

[pnl]

Thanks for all the replies
It helps alot to understand the problem.
I will let the mechanics fix this lateron and i will bring the book with me to point out the errors in it.