trucker198
New member
Hi, i've just bought a speedboat with a Yamaha 175hp v6 outboard (circa 1991), i knew there would be problems with the engine as it had been parked up for 4 yrs. It had however been winterised before being parked up. The problem is when i put a socket on top of the crank and rotate the engine it will only turn thru 180 degrees and stop, all the pistons are moving freely any ideas thoughts would be appreciated.