AT's 650 FUEL PUMP ANATOMY

[mytilini]

Africa Twin Club :: Log in
The most common problem of our beloved XRV-650/750RD04 is the fuel pump's usual malfancture.This happens due to its obsolete "philosophy" i.e. solenoids...!!! suffering from close-circuits (my God...).Unfortunately-if you are lucky- you can only replace the upper part.If the inner part is close-circuited, then... you have to pay a lot to buy a new one.Alternative solution? Buying a depression fuel pump from "AfricanQueens.de".Some guys use auto pumps (from old Mazda models) but I don't know whether it deserves the pain.

[mytilini]

I know, the text is "too greek" for you. I posted it for photo use purposes

[Lutin]

No use without the log-in.

[mytilini]

Without the rubber cover



the upper part.It is covered by the black plastric.Extremely sensible to humitidy, dirt and close circuits of course



Stare at the wiring:it suffers from static electricity and sometimes it is cut







the elastic membran cup














if this part is dry, forget it...you can't replace it

Hope to be helpfull

[GSPD750]

This is where most of Honda's OEM (also known as Mitsubishi fuel pumps) end up. That's where I put mine.






Breaker points/contacts is old technology now. Time to move on.
Many many threads here at xrv.org on repairing and modifying those old pumps and many work....and now Wemoto will sell you new contacts but for the price of new contacts or the pain of installing a zenor diode many here will just opt for a solid state Facet pump.

cheers.

[dennism]

This is a little off the thread, sorry, but what is the series number of the Keihin carbs on the RD07a?

I tried the search function....no luck there. DennisM