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Control unit for the fuel pump dead

Started by Dazza57, May 01, 2014, 10:35:58 PM

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Dazza57

Hi all, looking for some advice here. What the parts microfiche on PartShark says is the "CONTROL UNIT ASY  FOR FUEL PUMP
42H-85740-00-00" clicks when I try to start the engine and nothing happens apart from the neutral light going out. I wiggle the unit and the neutral light comes back on. I have checked all the connections and all appears to be OK.
Is this control unit just a relay and is it easily replaced with something else?

Perplexed Dazza
Greatest joke in the world - Two women sitting quietly in a room together, minding their own business :)
Bikes owned
Honda SL125
Suz TS250
Honda XL350
Suz GT550
Yam RD400
Suz TS185
Suz GS550
Suz GS850G
Suz GSX1100
Honda CX500
Honda XLX250R
FJ1200 3CV, current
FJR1300
BMWR1200RT curre

freezer

dazza its just a relay and its a common part on most Yams "viragos 535 and 1100 - most V Maxs- replace it just to be sure

Pat Conlon

Quote from: Dazza57 on May 01, 2014, 10:35:58 PM
Is this control unit just a relay and is it easily replaced with something else?

The answer is out there....http://www.fjowners.com/index.php?topic=5863.0
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

Dazza57

Thanks for that Pat, that is awesome info which will definitely come in handy down the road. I guess when I saw the price of replacing this relay, I was wondering whether anyone did something smart and cheap to get away from using the expensive Yamaha part.

Cheers, Dazza
Greatest joke in the world - Two women sitting quietly in a room together, minding their own business :)
Bikes owned
Honda SL125
Suz TS250
Honda XL350
Suz GT550
Yam RD400
Suz TS185
Suz GS550
Suz GS850G
Suz GSX1100
Honda CX500
Honda XLX250R
FJ1200 3CV, current
FJR1300
BMWR1200RT curre