[zlenart1]

I have a 2014 20hp mercury 4 stroke and was wondering if I need to add a fuel water separator? I've seen some people use them and some people not, so I wasn't sure.

 

[gheenoelotide]

i would, cheap insurance

 

[tomahawk]

Yep, do it, even if you run non ethanol and especially if you dont.

 

[mosquitolaGOON]

Bumping this instead of making a new thread. I have a portable 3 gallon in the rear deck with a 20 Merc. Would it be in my favor to put the filter before or after the priming ball?

 

[SWFLrunner]

Bumping this instead of making a new thread. I have a portable 3 gallon in the rear deck with a 20 Merc. Would it be in my favor to put the filter before or after the priming ball?

Before the ball.
tank-separator/filter-line to the motor with the ball

 

[sjrobin]

I have a filter housing I will ship to you for $20. Compatible with standard size Sierra, Yamaha, etc. screw on filters/separators.