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Old 26 July 2018, 10:42   #1
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This could be a dumb question!

I've got a 5hp Johnson 2 stroke with an internal tank but have just bought an external tank.

I'm having real problems starting it though as it seems to flood when I prime the engine,.

Should I have the switch on 'internal tank' setting (effectively 'off') when I prime the fuel line, and then switch it back to external tank before starting?

Apologies if this is a basic question but I have no manual with the old engine and only recently got the external tank!
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Old 26 July 2018, 10:56   #2
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I'd suggest you're probably overcoming the float needle and flooding it when you prime it.

Would I be right in thinking it's an older engine?
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Old 26 July 2018, 11:03   #3
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Yes, it's a 2000 model, just been serviced and had a new carburettor fitted, but it feels like you can keep squeezing the primer bulb, which is why I thought maybe the internal tank switch should be shut off to prime?
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Old 26 July 2018, 11:18   #4
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Quote:
Originally Posted by Speedo View Post
I thought maybe the internal tank switch should be shut off to prime?
Not as old as I thought then

If you leave the internal tank 'on' you're probably filling the internal tank with the primer bulb. Turn it off and see if the bulb goes hard.
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