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#1
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location of fuel filter/seperator
Being I'm going to get the carbs rebuilt soon I am adding a fuel filter/water separator. Should I put the filter after the primer bulb, before, or does it not matter?
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1986 V-20 1986 Yamaha 150 HP 
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#2
03-20-2009, 06:14 PM
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Quote:
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'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#3
03-20-2009, 06:16 PM
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quite certain it should go in this order, fuel tank to filter/h2o sep. to primer bulb to motor....and I heard installing the primer bulb close to the motor, and if possible having the bulb hang in a more vertical position, is best.
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#4
03-21-2009, 01:05 PM
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i like mine before so i can prime my fuel filter after replacing to ensure no air inthe filter to get you later under way. doesn't matter.
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 1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
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#5
03-21-2009, 08:35 PM
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mine fuel tank, water sepperator. primer bulb engine
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love to fish
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#6
03-23-2009, 12:46 PM
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Thanks for the info....of course that order makes it more work as my primer bulb was mounted inside the aft hatch so it now needs to be relocated outside into the splash well...
I am trying not to buy 3 times as many parts that I need for this as I usually do before I get it right....This is what I have and need to do. If anybody cant point me to a source for the parts I need it would be appreciated. Existing set up.....hose from fuel tank appears to be 5/16" ID x 11/16" od. this went straight into the yamaha primer bulb. out of the bulb the hose changes to 1/4" id (a hair bigger actually) x 7/16" od. from there it went right into the fitting that attached to the engine. Now I basically need to go from the hose from the tank (5/16" ID) to the Racor fuel separator which has 1/4-18 NPTF threaded connection, out of the racor (another 1/4-18 NPTF) connection to the primer bulb and then to the engine . I know this is way too much to read but if anyone has recently installed new fuel lines I figured they might have it all sourced out.
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1986 V-20 1986 Yamaha 150 HP
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#7
03-23-2009, 07:02 PM
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if you are going to replace the primer bulb( which is recomended if it has any age on it) use a mercury bulb that has teh yellow fittings on the end(some just have a yellow ring), most primer bulbs are one step above junk right out of the box, teh mercury's seem to work better than most. I see a lot of new boats rigged for Yamaha's and Suzuki's that come with mercury bulbs, even if they don't offer mercury's
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