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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.
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
THOM : 1999 Outrage 18, 2012 E-TEC 150, 2012 EZ Loader trailer
