Question about 1991 Yamaha FZR 600
Posted by Anonymous on
Hi, Anonymous first perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12.5 volts or better after charging.
3. Check battery terminals for damage or corrosion, check the 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.
4. Hook up battery positive cable, then with your multimeter on the milliamp scale connect one lead to the negative battery post and the other lead to the ground cable. Meter should read 3 milliamps or less, 10 milliamps with a radio, 15 milliamps with radio and CB. If your meter reads higher you need to isolate the circuit by pulling fuses and circuit breakers one at a time and observe meter for a drop in amperage then get out your test light and track down the short in that circuit.
5. Hook up a voltmeter to the battery and start the engine, if meter falls below 9.0 volts while cranking you need to perform a proper load test on the battery and replace if necessary.
6. With the engine running at 3600 RPM, the battery should read 14.3-14.7 volts if not continue tests.
7. Unplug the voltage regulator from the alternator at crankcase by the front of the primary cover.
8. To test voltage regulator go to https://www.youtube.com/watch?v=F8EjV0IjW9Q
9. With ohm meter, one lead grounded, touch alternator pin meter should read infinity, if not replace the stator.
10. With ohm meter, both leads touching alternator pins meter should read 0.1 to 0.2 ohms on 1989 and later models. 0.2 to 0.4 ohms 1988 and earlier models, if not replace the stator.
11. With the voltmeter set on AC scale, both leads touching alternator pins meter should read 16 to 20 volts AC for every 1000 RPM'S 1989 and later and 19 to 26 volts AC for every 1000 RPMS. If not replace the rotor.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below, and for specific information or questions please feel free to contact me at firstname.lastname@example.org. Good luck and have a nice day.
Hey Uncle Paul what do do about this dead battery
CPR for the FZR The FZR Forum
OEM parts for Yamaha
Posted on Mar 24, 2016
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Posted on Jan 02, 2017
I HAD THE SAME ISSUE. CHECK YOUR VOLTAGE OFF O THE MAGNETO, IT SHOULD BE IN THE 25V RANGE. IF THAT CHECKS OUT OK CK THE VOLTAGE IMEDIATLY AFTER THE VOLTAGE REGULATOR, I BET IT IS BELOW 14V. THE FZR IS PRONE TO HAVING THE REGULATOR GO BAD (THE OLDER ONES HAVE NO COOLING FINS AND THEY BURN THEMSELVES UP). THE BEST ONE TO BUY IS THE NEWER VERSION FROM A 1999 FZR, IT HAS COOLING FINS WHICH GREATLY PROLONGS THE LIFE. YOU HAVE TO DO SOME SLIGHT WIRING MODS, BUT NOTHING ANYONE COULDN'T DO. SEARCH FOR FZR REGULATOR UPGRADE AND IT WILL EXPLAIN EVERYTHING! I HOPE THIS HELPS! GOOD LUCK!
Posted on Mar 22, 2009
sounds like an earthing problem,check and clean the earths for the reg, also make sure the unit , and is able to keep cool by one.-ensure it has a good air flow and two-it is mounted correctly,so that any heat will be dissapated through it's mount
Posted on Sep 06, 2009
Ck at the battery with a voltmeter in series onthe Positive cable.A drain is use of the power. chking coils, rectifiers or the stator will not disclose or causeor effect.
Chk your charging rate. it should be between 13.6 and 14.2v Make sure your emergency shutdoqn is not left in off postion when not in use.. Off, meaning kill engine.
Good Luck. Remove the battery and wash it thoroughly with baking soda being sure not to get any inside.
Posted on Nov 14, 2009
is battery more than two years old? if yes replace battery. Battery voltage should be >12.4 volts minimum. if it wont hold this charge its bad. Check all the wiring on your bike to make sure that you dont have a shorted system that is draining down you battery.
Posted on May 04, 2010
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