Water Cooling

[nova68]

I have two Lehner motors with water cooling jackets that have bin in boats and I want to swap them around.Can I do that with out hurting the O rings?

[ED66677]

put some silicone oil inside the cooling jacket!

[sailr]

sometimes water will work also or some thin oil like sewing machine oil, 3-in-1 oil, etc. Start by trying to twist/turn the jacket. When it rotates easily, pull it off while turning. Reinstall it the same way. Don't use WD40. It will eventually eat up the rubber o-ring.