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Old 21 December 2005, 04:49   #1
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Country: UK - England
Town: Warwick
Make: Avon - Searider
Length: 5m +
Engine: 75hp mariner
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Oil system on Mariner 75 clamshell

I have an early 90's mariner 75hp with auto oil feed - I recall reading on the forum that it can be a good idea to disconnect such systems on older 2 strokes and use premix - would that make sense on this particular design? Thank you and seasons greetings!
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Old 21 December 2005, 05:22   #2
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Country: UK - Wales
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Boat name: DynaMoHumm/ SRV/deja
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Another solution is to put a weak (40% of normal)mix of oil in with the fuel that way if your oiler packs up your engine gets some lubrication
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Old 26 December 2005, 17:37   #3
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Personally, they either work or they dont. The crank runs the oil pump, i dont think from memory i have ever seen an oil pump fail on the 75 Clam shell. Some of the MoD engines are clocking up way over 8000 hours with no problems. I would leave it alone!
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Old 06 January 2006, 15:45   #4
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Thanks a lot guys - sorry for the late reply have been away over christmas - did manage to launch on new years day and decided to follow both your advice and run premix whilst checking if the oil level was dropping!

It does seem a solid engine - despite being stored clearly with fuel in the carbs started and ran - i found out later that 2 float valves were stuck open! hopefully get a carb kit soonest...
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