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Old 09 January 2013, 04:54   #1
Country: UK - Wales
Town: Pembrokeshire
Length: no boat
Join Date: Oct 2012
Posts: 23
2011 Mercury 2.5 Carb Float Height

Hi there,

I have this 2011 Mercury 2.5 hp that's having running issues. I think it has something to do with the float height in the carb.

Does anyone know what the height should be set at?


quietsparrow is offline   Reply With Quote
Old 09 January 2013, 07:08   #2
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
If its 2011 is it still under warranty.? If it is id take it to a Merc dealer....

PeterM is offline   Reply With Quote
Old 09 January 2013, 10:28   #3
Locozodiac's Avatar
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
A dounut float floats and aligns against hinge, float should be parallel to carb squared base, that's on 2 strokes engines, probably same carb building type used on 4 strokes ? Your carb probably needs a good soak in carb clean formula for some hours specially if it's a 2 strokes.

Happy Boating
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Old 14 January 2013, 14:26   #4
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,332
They usually have running problems and its usually mixture problems as they are set very lean from the factory. But as said its under warranty get it fixed by your dealer!!
Black Dog Marine
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