Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Puzzled]

Don't disconnect or reconnect the stator plug when the bike is running, it can (and will) fry the stator.

To check stator rotor output:
1) disconnect the stator plug
2) start bike
3) set multi-meter to VAC
4) read across the stator plug (one probe in each hole)
5) have someone rev the bike up to 2000-3000 RPM
6) stator/rotor output should be 16-20 VAC per 1000 RPM

To check for a shorted or grounded stator:
1) set multi-meter to "ohms"
2) read across the stator plug
3) resistance should be 0.2-0.3 ohms
4) now check each stator pin to ground
5) should have no continuity
6) kill engine
7) reconnect stator plug

To check voltage regulator function:
1) set multi-meter to VDC
2) check battery voltage...12.5-13.0 VDC
(if the battery isn't fully charged, this test is useless)
3) start bike
4) hold the red lead of the multi-meter to the positive post of the battery and the black lead to the negative post.
5) increase engine RPM to at least 2000 RPM
6) multi-meter will show regulator charging rate which should be 14.2-14.6 VDC. A brand new fully charged battery will sometimes only indicate 14.0 VDC; anything above 14.6 VDC is cooking the battery.

Did the stator go bad first or the regulator?
A bad stator will take out a regulator and a dead short will ruin both.
A bad or intermittent ground on the regulator is never a good idea either.

[roadrunner]

Don't disconnect or reconnect the stator plug when the bike is running, it can (and will) fry the stator.

To check stator rotor output:
1) disconnect the stator plug
2) start bike
3) set multi-meter to VAC
4) read across the stator plug (one probe in each hole)
5) have someone rev the bike up to 2000-3000 RPM
6) stator/rotor output should be 16-20 VAC per 1000 RPM

To check for a shorted or grounded stator:
1) set multi-meter to "ohms"
2) read across the stator plug
3) resistance should be 0.2-0.3 ohms
4) now check each stator pin to ground
5) should have no continuity
6) kill engine
7) reconnect stator plug

To check voltage regulator function:
1) set multi-meter to VDC
2) check battery voltage...12.5-13.0 VDC
(if the battery isn't fully charged, this test is useless)
3) start bike
4) hold the red lead of the multi-meter to the positive post of the battery and the black lead to the negative post.
5) increase engine RPM to at least 2000 RPM
6) multi-meter will show regulator charging rate which should be 14.2-14.6 VDC. A brand new fully charged battery will sometimes only indicate 14.0 VDC; anything above 14.6 VDC is cooking the battery.

Did the stator go bad first or the regulator?
A bad stator will take out a regulator and a dead short will ruin both.
A bad or intermittent ground on the regulator is never a good idea either.

Didn't test the stator or rotor, dealer replaced rotor with 45amp and tested charging system back in April, I didnt ask them to check the voltage regulator (thought that would be part of the charging system check).

Tested the regulator per above (battery is almost 2 yo) regulator charging rate never gets above 14 volts. Regulator is original time to replace (maybe related to radio clipping). Dealer have any better way of testing?

Thanks!

[AXIL]

puzzled, i think you oops on #6 of shorted or grounded stator test. I am sure you know, but for those that don't the engine must be off when doing an ohm's test. any current will blow a fuse or fry your meter.   axil