99Yamaha fuel pump

[robert graham]

Well, I broke down and bought a new fuel pump for my 1999 Yamaha 90HP 2 stroke. My old pump is still working fine but my question is this: go ahead and put new pump on and keep old pump for a spare or wait for old pump to die? You guys got any ideas on the life of these pumps? Thanks for any thoughts on this!

 

[99yam40]

Re: 99Yamaha fuel pump

Since you already have it, It just depends on whether you would prefer to change it out on the water or on the trailer at home. A little preventive maintenance at home is a lot easier and less disturbing than interrupting a fishing trip in the middle of nowhere.
The old one could last another 10 years. but not likely.
With the new fuels, I have no idea how long they will last, but you can roll the dice and see how long yours will.

 

[robert graham]

Re: 99Yamaha fuel pump

99yam40,thanks for your thoughts on this, think I'll go ahead and put the new one on and save the old one for a spare. The idea of doing motor repairs in the middle of the river not too appealing. I still wonder what the average, normal life is on one of these diaphragm pumps, or is it like a light bulb, just goes out one day when it gets ready? Thanks again!

 

[cousinabe]

Re: 99Yamaha fuel pump

you can buy a rebuild kit for a couple bucks to keep as a spare.
http://www.iboats.com/Fuel-Pump-Dia...5553324--**********.642670371--view_id.172524

 

[99yam40]

Re: 99Yamaha fuel pump

99yam40,thanks for your thoughts on this, think I'll go ahead and put the new one on and save the old one for a spare. The idea of doing motor repairs in the middle of the river not too appealing. I still wonder what the average, normal life is on one of these diaphragm pumps, or is it like a light bulb, just goes out one day when it gets ready? Thanks again!

I really think most of them are replaced when trying to diagnose a motor problem and there is nothing wrong with them. If the proper testing is done then that could be eliminated. My 1999 C40 still has the one that I bought it with ( of coarse I am the 3rd owner so I do not know if it has been replaced before) and so does my 1985 35 Johnson. But like I said with the new fuels who knows if the diaphragms will hold up. I have read that the larger motors tend to need them replaced more often

 

[robert graham]

Re: 99Yamaha fuel pump

Well, I put the new one on today, kept the old one for a spare. No harm done for a little peace of mind on the river. I guess 11 years is O.K. for the pump.