FZR 600 electrical issue

[smokeymatt]

Just bought a 91 fzr600, charged the batt and it ran fine, went out for ride tonite and suspected the battery was not charging as the light did no brighten up with the revs, so i got down the road until the lights went out and with it all the bike. THanks to the godfather and his bro for the escort and push home. got the side covers off and found a melted out regulator rectifier. Is this a common problem? the unit looks grossly inadequated and the heat sink pissy, do i replace with genuine of wire something else up? I used a hona unit on an old suzi gs once and that worked geat. Any input greatly appreciated as i have really only ever owned suzuki's

[Sean'o]

Wouldnt say its a common problem on a fizzer, it is a common problem on just about all 90's model honda road bikes, dont use one of those. you shouldnt have a drama if you wire one up off just about anything thats over 600cc, get one off a big bike if you can, usually they are 35amp, less likely to give you grief, having said that, have wired one off a 250 into a 900 before without any dramas

[Sprint]

Go 3rd party for the replacement, cheaper than OEM and dissipates heat more efficiently.

1989 - 1998 Yamaha FZR600 Regulator Rectifier REGULATOR RECTIFIER



S.

[smokeymatt]

thanks for the reply to my problem on my bike, have wired in an old unit from my old gxs550 and it seemes to be running fine (in the shed anyhow) is see the fzr unit does no have a reference wire like the suzuki model do you know anything about this?

[druu]

Regulator Rectifier 12volt 35amp 6 Wire New Motorbikes - eBay Other Makes, Bikes, Motorcycle Parts, Cars, Bikes, Boats. (end time 26-Nov-07 19:58:39 AEDST)

Regulator Rectifier 12v 35amp 5 Wire New Motorbikes - eBay, Other Accessories, Motorcycle Accessories, Cars, Bikes, Boats. (end time 01-Dec-07 13:07:40 AEDST)

I have one of these on my CBR250RR and runs very well, cheap too.

[Mockery]

I had a good diagnostic diagram which helps you check all components of your charging system, can't seem to find it though.
It is probably on my work computer, in which case I will upload it tomorrow...

[Jonchilds]

Reference wire will be internal most likely.
They're needed most where there are log/lots of wires or a high current draw (twin headlight?).

Had the one on the VFR shorted to the +ve output, which is effectively the same thing as not having one.

[Sean'o]

Reference wire worried me a bit a while ago, hunted till i found a live feed wire and connected into that. after talking to a few auto sparkies, including bike ones, just join your positive out to your ref out.

[smokeymatt]

thanks for the advice bike seemes to be running OK now at least until i buy a better reg/rect.

[Mockery]

Ok found the diagnostic if anyone's still interested. It's too large to attach, but here's the link:

http://www.electrosport.com/Images/fault_finding.pdf

[smokeymatt]

Cheers for the atatchment Mockery ill print that out and keep it in the workshop file