Yamaha Stripped Lower Unit Drain

D

DonVincenzo

Recruit
Joined
Sep 9, 2009
Messages
3
Ok so I stripped the lower drain, not the screw, for my 2004 Yamaha 90hp 4 stroke. I have looked at heli coil and time sert and I am not sure which one to use. does anyone have any expirence with either of these and any spicifics would be greatly appreciated. The outboard is used in salt water only.

thanks in advance

Vince
 
R

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Yamaha Stripped Lower Unit Drain

use the 8mm helicoil and shorten the heli coil insert by 4 threads.
the standard heli coil is to long and must be shortened.
I get several a year that do it yourselfers strip.
 
D

DonVincenzo

Recruit
Joined
Sep 9, 2009
Messages
3
Re: Yamaha Stripped Lower Unit Drain

Thanks for the quick reply. Have you seen any instances where the heli coil fails in this application.

Thanks

Vince
 
R

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Yamaha Stripped Lower Unit Drain

if installed properly, no failures.
 
R

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Yamaha Stripped Lower Unit Drain

best I remember its 8mmX1mm but use a thread pitch guage on the plug to make sure.
 
You must log in or register to reply here.
Top