FJowners.com

General Category => Maintenance => Topic started by: budgie7622 on August 25, 2022, 07:27:23 AM

Title: Reverting back to fuel pump
Post by: budgie7622 on August 25, 2022, 07:27:23 AM
Hi all i was hoping for some help i have a basket case 88 fj1200 that i bought for pennys was running although quite rough i have sent the carbs out to be cleaned but i want to revert the fueling back to standard as someone had converted it to a gravity feed tank. Ihave already bought a pump petcock fuelfilter and most of the fuel lines but was wondering what size fuel line do i need going from the pump to petcock as you can no longer get it new aslo what size clips for it
Title: Re: Reverting back to fuel pump
Post by: melloncollie on August 25, 2022, 09:27:41 AM
The fuel pump models have a smaller needle and seat, you will need to replace those with the correct sets for the fuel pump model.  The Yamaha part number listed is 3CF-14107-15-00 but you should be able to find them cheaper elsewhere such as http://www.rpmracingca.com/proddetail.asp?prod=3CF-14107-15 (http://www.rpmracingca.com/proddetail.asp?prod=3CF-14107-15)

I recently added a fuel pump to my 89 and I used 5/16 (~8mm) fuel line because its what I had laying around and it seems to work just fine.

Out of curiosity, what fuel pump did you go with?
Title: Re: Reverting back to fuel pump
Post by: budgie7622 on August 25, 2022, 12:20:44 PM
Thanks for the reply melloncollie i have bought a used fj1200 pump from ebay only because it came with the mounting bracket what size clamps do i need for 5/16
Title: Re: Reverting back to fuel pump
Post by: FJmonkey on August 25, 2022, 12:40:57 PM
5/16?

The bike is metric. Gravity fuel lines are 10mm and pumped (I think) is 6mm. That is internal diameter. The line(s) may have a different wall thickness.  So pick a clamp that will compress the line you have.
Title: Re: Reverting back to fuel pump
Post by: Waiex191 on August 25, 2022, 12:58:58 PM
I used all 1/4" lines on my '89.
Title: Re: Reverting back to fuel pump
Post by: FJmonkey on August 25, 2022, 01:45:57 PM
1/4 inch X 25.4 = 6.35mm. Seems legit...
Title: Re: Reverting back to fuel pump
Post by: Pat Conlon on August 25, 2022, 02:28:41 PM
Don't forget to check your float needles: https://fjowners.com/index.php?topic=9836.0
Title: Re: Reverting back to fuel pump
Post by: budgie7622 on August 25, 2022, 03:51:20 PM
I had not realised the needle and seat would be different thank's for that in advance
Title: Re: Reverting back to fuel pump
Post by: racerrad8 on August 25, 2022, 10:36:26 PM
Don't forget, RPM is the only place you can still get the genuine Yamaha fuel pump.

Once these are gone, there are no more...

http://rpmracingca.com/proddetail.asp?prod=YamFPump (http://rpmracingca.com/proddetail.asp?prod=YamFPump)

Randy - RPM