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post #1 of Old 01-09-2020 Thread Starter
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Nissan/Tohatsu M3.5A (3 hp) removing Prop problem

I have two friends. Each have motors that look similar. They seem to both be Tohatsu M3.5A outboards. One is branded Mercury and is pretty new, about 2005. The other is a Nissan older perhaps 1998.

They both had leaking gas tanks which I replaced. They both started and ran, but would not drive the boat. They both have plastic props.

I worked on the Mercury first. I pulled the cotter pin holding the prop, and I spun the prop right off. The shear pin was sheared and buried in the plastic internally. I replaced the shear pin, put the prop right back on. The motor started, ran and drove the 14 foot boat along at a good clip.

On the Nissan, I can't seem to get the prop off. I pulled the cotter pin, but when I spin the prop it doesn't seem to unscrew, but just spins on the shaft. Any ideas on how I can get it off with out cutting it off?

Thanks for your help. Regards Captain Tom
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