Quick question: Fuel hose size? 5/8 or 1/4

CaptOchs

Petty Officer 1st Class
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Jul 3, 2007
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230
I have a 1968 Johnson 100 HP. It currently has a 5/8 diameter fuel hose on it. Will the engine run OK with a 1/4" hose or do I need a 5/8" hose?
 

ezeke

Supreme Mariner
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Sep 19, 2003
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12,532
Re: Quick question: Fuel hose size? 5/8 or 1/4

5/16" was stock. Part number 772564.
 

CaptOchs

Petty Officer 1st Class
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Jul 3, 2007
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230
Re: Quick question: Fuel hose size? 5/8 or 1/4

5/16" was stock. Part number 772564.

Walmart has 1/4" and 5/7". Can I use the 1/4"? This fuel line would connect to my fuel filter/water separator to engine. I'm pretty sure my primer bulb is shot and possibly leaking air.
 

Gary H NC

Fleet Admiral
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Dec 1, 2005
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8,972
Re: Quick question: Fuel hose size? 5/8 or 1/4

Go with the original size all the way to the connection on the motor...5/16th
 

CaptOchs

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Jul 3, 2007
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230
Re: Quick question: Fuel hose size? 5/8 or 1/4

Will do. Thanks.
 
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