Posted by DaveL on 06/15/15 - 7:45 AM
#1
I have a 2004 Johnson/Suzuki 4 stroke with a little over 300 hours running time. I have always used synthetic 10w-40 oil. It siezed up on me over the winter. Good batteries. Starter tested and is good. I put a wrench on the flywheel and it won't turn. I keep injecting Marvel Mystery Oil into the cylinders every couple of days. Any suggestions would be appreciated.
Posted by whalerman on 06/15/15 - 9:02 AM
#2
Did you leave the motor in the verticle position or was it tilted for the winter? Might be stuck valves. I'ld pull the head and see if the pistons/crankshaft or the valves are the problem.
Edited by whalerman on 06/15/15 - 9:05 AM