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  #11  
Old 10-26-2008
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Find a two stroke

Hey OP I just replaced my nissan 3.5 2 stroke with a new 6hp for my sailboat the difference is huge for the boat because I also went from a 20" to 25" shaft and now have forward and reverse. But, the 3.5 is 30lbs and my 6 is 60ish. There is no way that I would want to try and mount that on a dinghy unless I was going to leave it on for a long time. Try and find a 2000-2005 2 stroke Tohatsu, Nissan, Mercury as they are the same and 15lbs lighter than the new 4 strokes. Also you will save money.

30lbs isn't a huge diff in the big scheme of things but it does tie up your other hand when carrying/mounting. .02
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Old 10-26-2008
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I have the 3.5 for my dinghy, and while it is light, reliable and starts easily, it certainly not overpowered. My biggest downside is that it has a miniscule fuel tank, and cannot be connected to an external tank. The result is that I have to refill it far more often than I would like, and often while bouncing around in somewhat tricky conditions. As much as the other characteristics of the engine are good, the tiny fuel would make me think long and hard if I had to make the decision again.
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  #13  
Old 10-26-2008
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Tweitz-

There's a mod for the 3.5 HP where you can use a modified fuel cap to attach an external fuel tank. You do have to pump fuel from the external tank to the internal about once an hour or so...but it is supposed to work pretty well.
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  #14  
Old 10-26-2008
Don Radcliffe
 
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I just bought another Tohatsu 3.5 2 stroke, which is strong enough to plane one person a 10.5 ft RIB, but weighs less than 30 pounds. The old one was still running after 14 years, but got caught under a fixed dock in Tobago with some high surf and the steering arm broke off.

The lighter motors also help when you have to lift the dinghy onto a rocky beach, or even pull it up a sandy one.
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Where can you get that modified fuel cap to fill the internal tank????
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Old 10-26-2008
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You have to make it yourself, AFAIK, no one is selling them commercially. There's a website that details how to make it on one of the WW Potter sites. I'll see if I can find the bookmark and post it here if I do.
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Where can you get that modified fuel cap to fill the internal tank????
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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