Catfisherman
New member
Hi boaters, I have a 2010 20HP Merc motor that won't start. It started 3 trips this year with no problem. I replaced gas with 93 octane gas, replaced old plugs, cleared vent in gas tank fill cap, checked gas flow thru hose pump up ball, gas lines, filter, to carb. Still won't start. Checked plugs for flooding, no gas on plugs. I think problem is the needle valve in the gas bowl. Anyone have any other suggestion before I take motor to Merc. Mechanic? Thanks for any help.