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Old 07-08-2013
cthoops cthoops is offline
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Tohatsu troubles

We have a 2010 Tohatsu 9.8 hp outboard on our boat. The previous owner said it could be temperamental.

It ran pretty well for the first six weeks or so, but now it either runs very smoothly, or it's very rough and acts like it wants to stall (and occasionally does). When it's running rough, increasing/decreasing the throttle or fiddling with the choke doesn't help it. Yesterday we went to the dock to get water, etc. and it purred right along. On the way back, it stuttered away (made for a stressful return to the mooring).

Before the season we put in a new water/fuel separator filter, we always run it dry, and we use high octane fuel and put stabilizer in it. We top off the tank frequently (it's an external 3+ gallon tank), and it gets used once a week.

At this point we're not comfortable heading out for a sail until we get it straightened out. Any thoughts? Would it be something that we can try to fix ourselves? Mr. Cthoops was an airframes mechanic 30 years ago in the Marines and he can fix any bicycle, but he doesn't consider himself a motor head. I'm really good at cheering him on and handing him things.

Any suggestions would be greatly appreciated. Thanks.
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