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Old 26 May 2004, 15:25   #1
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New tender outboard - 2 stroke or 4 stroke?

Looking at buying a new tender with a 5hp engine - should I buy a two stroke engine or a four stroke engine. 4 stroke slightly heavier (10 pounds).
Considering a mercury - anyone with experience of these?
Thank you in advance.
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Old 26 May 2004, 15:40   #2
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If you have to transport the ob with your car, I would choose 2-stroke. With 2-stroke engine you don't have to worry about the oil leaking out or into wrong place inside the engine. As you mentioned 2 stroke is also lighter.

Jari
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Old 26 May 2004, 15:44   #3
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Yes, would be looking at transporting ob in car so oil leaking from 4 stroke would be a problem, Thanks
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Old 26 May 2004, 16:11   #4
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Would recommend a 2-stroke for low weight but there are a few other considerations.

How far do you need to travel in your tender? Does it matter how noisy it is? How far do you have to manhandle the motor from car to water?

I have a small Honda 4-stroke and can't fault it. Never had a problem with oil leaking, but it is important you always put it with the correct side down. Always starts easily and you don't suffer from fouled plugs with a 4-stroke.

I also have a 5hp Mariner 2-stroke which is a new experience to me, and I have to say I'm really quite pleased with it.

Hmmm not very conclusive or helpful really!
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Old 26 May 2004, 17:28   #5
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Oil leakage is no proplem, it says on the engine which side to lie it down on.

Ive only ever had problems with small 2 strokes so id choose a fourstroke every time unless it was too heavy to carry.
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Old 26 May 2004, 17:51   #6
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Thanks for that - the engine is for my father and the salesman is trying to sell a two stroke - I see 4 stroke advantages of economy and no hassle of mixing fuel.
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Old 26 May 2004, 18:14   #7
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Not all the small 4-strokes are quiet or trouble free - I bought a new 4hp Yamaha 4-stroke last year for my 10ft Sniper dory and it's a dog of an engine. Incredibly noisy for its size and due to a design flaw in the positioning of the carburettor (which I finally got Yamaha to own up to at the Boat Show), takes up to 11 pulls of the recoil starter to fire the bitch up.

Yamaha UK told me the way round the problem was to fit an external fuel tank and use the bulb to pump the fuel through, thereby negating the convenience of having a portable engine

Its other little foible occurs when you tilt it up after it's been running. The hot sump oil somehow runs past the piston rings and soaks the spark plug so when you come to start it again, it won't! All in all a vile piece of equipment, and due to Yamaha's initial denial of anything problematical with the engine, led me to disregard them when specifying an engine for my Avon Searider. Furthermore, mine isn't a one off - I know two people with the same engine and both have the same problems.

I would also concur with the above views regarding transporting it in the car - it really is a dreadful bore having to worry which side to lay it down on and in hindsight I would have definitely gone for a 2-stroke.
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Old 27 May 2004, 02:25   #8
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Thanks for that Phil - Will take your advice on that.
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