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Old 22 May 2007, 06:57   #1
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Country: UK - England
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Boat name: RIB
Make: Ribcraft
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High resistance to engine cranking. Yamaha 100 HP 4 stroke.

Put the RIB to bed last November, and have come back to it now to find the engine won’t turn over. Massive resistance to cranking the engine (by hand & on starter motor) even with the plugs out.
Anyone any ideas what it might be ?
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Old 22 May 2007, 12:47   #2
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Did you squirt wd40 or similar into the plug holes before turning it over?
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Old 23 May 2007, 06:05   #3
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Make: Ribeye 785
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Give us some clues!

How did you prepare the engine for storage?

Did you fog the engine?

Squirt oil into the bores? What type of oil?

Was the boat stored inside or outside?

Were the plugs replaced for storage?

Was the engine oil changed before storage?
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Old 23 May 2007, 06:11   #4
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I know its obvious, but have you checked to see if its in gear?

Nasher.
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Old 23 May 2007, 13:14   #5
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What everyone else said-and have you checked the lower unit gearcase for water ingress? It could be a semi seized gearbox.
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