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K&B 3.5 Help

Old 08-08-2007, 06:42 PM
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baxternick
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Default K&B 3.5 Help

I just was given a K&B 3.5 and a tunnel hull for it. What is the high speed needle set to on these things for break in?
Old 08-08-2007, 06:57 PM
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Hydro Junkie
 
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Default RE: K&B 3.5 Help

Depends on the engine. Do you know which engine you have, besides being a K&B 3.5? Is it an SS, for example
Old 08-08-2007, 08:20 PM
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ob nut
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Default RE: K&B 3.5 Help

13mm water cooled (non-SX) ran around 3 1/2 turns out. My SS motor runs fast around 5 turns out.
Old 08-08-2007, 10:08 PM
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Oh Yeah!!
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Default RE: K&B 3.5 Help

Hey Nick,

According to the instruction sheet and the K&B outboard motor that I have... a 8906. K&B recommends 4 to 4 1/2 turns out at sea level. This is a starting point.
Old 08-08-2007, 11:57 PM
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Ron Olson
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Default RE: K&B 3.5 Help

I'm only a couple of hundred feet above sea level and at 4-1/2 turns out it was way too rich. Listen to Mark, 3-1/2 turns is a good place to start with it.
Old 08-09-2007, 01:27 AM
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ob nut
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Default RE: K&B 3.5 Help

Not certain how above sea level I am, can check later when I get home with the GPS.. When I first started running the SS, it started out around 4 +/- turns out. It then started to always die at bouy 4.. It took a few more runs to determine that the motor was way too hot. I do believe the last time I checked the needle, it was 5 1/4 out.. Sounds rich, but that motor loves fuel..

Last item, what % of fuel are you using? This can make a difference. I'm always running 65% in my boats.

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