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December 1st, 2014, 07:05 AM   #11
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I Ride: FE390
just took the right radiator off, so i can have a better view and access of the spark plug hole. PITA anyway, my fear for thread damage confirmed. Two thirds of the spark plug is going in really easy, after that it gets tight and screws in angle. I have to talk with my mechanic to assess the thread damage and do a thread repair. I will keep you posted with pics and the rest of the story.

Last edited by toulioss; December 1st, 2014 at 11:42 AM.
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December 1st, 2014, 05:25 PM   #12
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That sux!
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December 1st, 2014, 07:14 PM   #13
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I Ride: 2010 FE450, 2010 FE450S, 2010 FX450, 2011 FE570SM
Motion Pro makes a spark plug socket for KTM's that works perfectly on the 70 Husabergs

Spark Plug Socket, 14mm | Motion Pro
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December 4th, 2014, 10:49 AM   #14
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Originally Posted by toulioss View Post
just took the right radiator off, so i can have a better view and access of the spark plug hole. PITA anyway, my fear for thread damage confirmed. Two thirds of the spark plug is going in really easy, after that it gets tight and screws in angle. I have to talk with my mechanic to assess the thread damage and do a thread repair. I will keep you posted with pics and the rest of the story.
I wish i had the specific tool you mentioned, unfortunately i did not, so i had to improvise. The reason for the thread damage might be 1. the previous owner had over tightened the spark plug. 2. I might stressed the over tight situation by not using the specific tool.

I used a thread repair chase, size M12x1.25mm, to clean and repair the damaged thread.
I positioned the piston as high as possible by setting the bike in 5th gear.
Used a lot of grease on the chase to collect thread debris.
Compressed air in cylinder head to remove any remaining particles.

Anyway my advise on a successful & relaxed spark plug removal is:
-remove the radiator & hoses
-use a long stable spark plug tool
-use extra caution when unscrewing the spark plug, try to take it off in a straight way
-reposition spark plug using anti-seize??? NGK suggest that is not needed, due to its special thread material
-do NOT over tight
Thanks from tourist

Last edited by toulioss; December 4th, 2014 at 10:57 AM.
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