"Speaking of 85 Forces, I'
"Speaking of 85 Forces, I've had one for 15 years. Model 856Y8B, 1988 year. Can't say I've had much trouble. . .a choke solenoid, one new impeller, and a relay for the tilt n trim. Plus several props. But my luck may be changing. While winterizing, I noticed water on the lower spark plug, plus it was cleaner than the other two. Noticed the same earlier this summer when I changed plugs, as well as a slight loss of rpm's/power. My understanding is that this probably means a blown head gasket or exhaust cover gasket. If I'm right, can such things still be found, and how much shop time would a replacement run."