THE PRIMER BULB WILL NOT PUMP UP HARD FOR MY 1983 50HP MERCURY OUTBOARD MOTOR?

SOURCE: engine won't run unless primer bulb is being pumped

I have the same problem and may have a solution. I looked at the primer pump and it was cracked letting air into the system. When I pumped it my finger was over the crack and it worked fine. When I stopped the crack was able to **** air again. Take a look.

SOURCE: 1999 Mercury Mariner 9.9hp outboard motor

should be on the side with a lever but could you give me more info please

SOURCE: 6hp Johnson outboard stalls & quits

go to an auto parts store and get a can of gasoline additive called seafoam. Read the label so you know how much to add to your 6 gallon tank. This stuff works wonders on outboard motors.

SOURCE: gas flow to outboard

THE NEEDLE VALVE ON THE CARBURRETOR IS WORN THE NEEDLE NEEDS REPLACING

SOURCE: 1984 suzuki DT60 outboard set up for 5 yrs cleaned carbs got it running. wont stay running unless you pump the primer bulb. does it need a fuel pump?

yes. OR you have an air leak in the fuel system. Easy way to tell is with a clear fuel line between the fuel pump and the carb. If you see bubbles, you are looking at a new fuel line connector or aire leak at the fuel pump. If you pump up pressure with out the motor running A fault may leak gas.