Post by anon on Feb 17, 2007 14:57:42 GMT
From: greeeny2 Sent: 15/11/2004 21:33
For pre 1996 600 Divvys
Hi all,
Well here it is the report on Replacing A Vacuum Fuel Pump With An Electric One.
Hope it makes sense and thats its of some help to someone.
Replacing A Vacuum Fuel Pump With An Electric One.
Parts needed:
Fuel pump (I got one from a ’97 divvy), Wire.
Electric Fuel Pump:
Vacuum Fuel Pump:
Pumps are totally different in shape
1 – Remove the fuel tank.
2 – Remove the Vacuum fuel pump, this involves removing the 3
pipes from the pump and undoing 2 nuts on the bottom of the
bracket.
Vacuum fuel pump Removed
(View from over seat area forward):
3 – Then a bracket is needed to hold the new fuel pump in place.
Would need to measure up individually to see where you can put
the holes
This is what I came up with using the original bracket:
Drill 2 holes in original
bracket where old
fuel pump sat.
4 – Fit the pump to the bracket:
5 – Fit to bike:
Fuel line from carbs goes on the little connector of the fuel pump
and fuel line from filter goes on the big connector.
6 – Wiring up, this is just a case of finding a wire in the loom that
becomes live when the ignition is turned on (I used the wire from
the carb heater thermo switch) and connect the blue/black wire to
this via an inline fuse, An alternative would be to use a relay (still
working on this though).
Then find an earthing point (either a wire or a bolt on the frame)
and earth the black from the pump.
7 – Put fuel tank back on.
Turn on the ignition on, pump should be heard running but will get
slower until stopped (recommend putting fuel tap in prime at this
point as the fuel tap needs a vacuum to let fuel through otherwise).
By Peter Green (Greeny)
From: Tour_De_Mark Sent: 16/11/2004 08:46
If it goes into the tech area (it should) it might be worth mentioning that the vacuum pipe that goes to the inlet manifold is redundant and that a 6mm bolt will seal off the inlet manifold. (The standard carb balancing nuts aren't available from Yamaha speperately from the manifold.)
I'm sure people will realize this but it's worth mentioning.
From: Greeny Sent: 16/11/2004 10:52
Yes TDM I hate to admit this but you are correct, Was thinking about this but forgot to add it in will modify the report to mention bloking off the vacuum, is the vacuum for the fuel tap and the pump from different cylinders can't remember as I modifyed mine a while ago to run from the same one?
Peter
From: Tour_De_Mark Sent: 16/11/2004 12:33
" vacuum for the fuel tap and the pump from different cylinders"
I think one pipe has a divider for both.
Excellent article and a mod well worth doing if like me your bike gets left in the garage a lot.
From: IanBlackburn123 Sent: 06/04/2005 20:17
Dave
I am trying open the pdf file.
Has anybody else had problems seeing it?
Ian
From: IanBlackburn123 Sent: 06/04/2005 20:37
Dave
Forget my last post.
My pc playing up!
Got it now.
You're a star!
Thanks
Ian
From: Stalk Sent: 06/05/2006 14:38
Having just got an electric pump from ebay for my 94 600, this is an invaluable bit of info. A big thank you for posting it.
From: ianboydsnr Sent: 06/05/2006 15:21
yes, i have a fuel pump for my 94 model ready to fit, seems easy enough, dont like having to use prime if i have left it for a while
