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Old 22 April 2005, 00:40   #1
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O/B Vibration ???

Hi there, just happily launched my new SIB with a 25hp Merc 2 stroke.
Everything went well. Just I was a bit concerned by how much the engine was shaking.
Is this due to it being a 2 stroke?
It was the worst at idle then slowly went away as I powered up.
Its no problem just i was wondering if this is normal for a 2 stroke?
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Old 22 April 2005, 03:59   #2
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Oh yes, so don't worry about it.

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Old 22 April 2005, 04:26   #3
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I guess you must still be breaking the engine in. Is it double oiled still?
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Old 22 April 2005, 04:56   #4
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Hi

I think that you will find it is a bit smoother when you are runing on lower oil ratio also you may find that you need to speed up the tickover a little.

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Old 22 April 2005, 05:28   #5
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Yes, im currently running the engine at twice the oil ration for the recommended break in procedure. That could be the cause.
What do you mean by tickover?
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Old 22 April 2005, 05:29   #6
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When the engine is running but not in gear.
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Old 22 April 2005, 05:33   #7
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How do you speed up the tickover? Is that when you turn the primer knob clockwise?
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Old 22 April 2005, 05:49   #8
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Evidently I was talking nonsense!
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Old 22 April 2005, 05:54   #9
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Old 22 April 2005, 05:55   #10
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So come on then Duncan - teach me!
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