Question about 1989 Yamaha FZR 600

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1991 yamaha fzr600 overcharging - 1989 Yamaha FZR 600

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  • Yamaha Master
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Hi, Anonymous in order to check out any main system electrical circuit, you have to start with a fully charged battery 12.5 volts or better, and be able to pass a load test if necessary.
1. Check battery terminals for damage or corrosion, check battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
2. Check the voltage drop at the battery when you hit the starter button, anything below 9 volts you might have a faulty battery.
3. Check voltage at the battery with the bike running at 3,600 RPM should be 14.3 to 14.7 volts. If you are not getting these numbers, you might have a faulty voltage regulator.
4. Make sure voltage regulator is "GROUNDED" and functioning properly, watch the video below on how to test a voltage regulator.
5. Unplug the connector to the alternator and hook your multimeter leads to the alternator (pin/socket selection does not matter) set the multimeter to AC volts, at an idle the meter should read 16 to 20 volts AC. at 2,000 RPM 32 to 40 AC volts, 3,000 RPM 48 to 60 AC volts. If you are not getting these numbers, you may have a faulty rotor, follow step 6
6. Set the multimeter to OHM'S, connect one lead to the alternator (any pin/socket) and the other to a ground, the meter should read infinity. Connect both leads to the alternator meter should read 0.1 to 0.2 OHM'S. If you are not getting these numbers, you have a bad stator.
7. Check all wiring in the charging circuit for worn or chaffed spots and all wiring connectors in the circuit for corroded, broken, or loose pins/sockets, which is the # 1 offender.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Charging System Test Questions The FZR Forum
FZR600 generator charging issues
https://www.tradebit.com/filedetail.php/269137237-yamaha-fzr600-1989-1999-factory-service-repair-manual
OEM parts for Yamaha
http://www.fzrarchives.com/fzr600/600_manual/1999fzr600r.pdf

Posted on Mar 24, 2016

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Posted on Jan 02, 2017

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DickCanFixIt
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SOURCE: is there such thing as a 1991 fzr600 and a 1991 fzr600r?

1994-5 were the only two years for that bike according to this page. Keep in mind the model/letter designations are not the same everywhere in the world. On the page they also list several years of "Yamaha FZR 600 (reduced effect)" which someone could call an FZR600R, even if that's not exactly what the factory called it.

Please rate this answer a fixya.

Posted on Apr 12, 2009

tabbycat282
  • 56 Answers

SOURCE: Yamaha FZR600 1991 - Spark plugs fire but bike doesn't start

Question . when you say the spark plugs fired , do you mean that you took them out to check ?? or do you mean that you heard the engine crank over.Either way if your fuel tap is faulty,you have more than likely dumped a hell of a lot of fuel in your donk.Blow compressed air around spark plug holes to remove grit,remove all the plugs,put them back in their caps and ground them to the engine away from the spark plug holes in the cylinder head,Crank it over for a while,not too long,reinstall plugs and crank it over.It should be a goer.All the best luck liesel...Tabby.

Posted on Oct 08, 2009

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