Kawasaki FH580 Charging problems

RLeabo

Forum Newbie
Joined
Sep 15, 2021
Threads
1
Messages
2
I have a DR with a Kawasaki FH580V 17hp. Battery not charging, fuse blowing. Expect the voltage regulator output to be Positive 13.5VDC but it reads negative 21VDC. Meter is hooked up correctly. Installed a new voltage regulator and it reads the same. Input is 23-33VAC. Was blowing the fuse with the old regulator, but not with the new one.
 

mechanic mark

Lawn Pro
Joined
Jul 15, 2013
Threads
175
Messages
7,414
Check 2 wires at alternator plug engine running, should read 20-30 volts. Check all wiring by hand making sure all connections are tight secure, especially ground wires & straps.
 
Last edited:

slomo

Lawn Addict
Joined
Jul 14, 2019
Threads
76
Messages
4,709
Voltage reg have a good CLEAN ground?

Negative battery cable in good shape with clean bare metal connections?

Does the voltage reg output read 14vdc connected to the battery? Wires flipped when you get a - reading? And - 21vdc not connected to anything?
 

RLeabo

Forum Newbie
Joined
Sep 15, 2021
Threads
1
Messages
2
Voltage reg have a good CLEAN ground?

Negative battery cable in good shape with clean bare metal connections?

Does the voltage reg output read 14vdc connected to the battery? Wires flipped when you get a - reading? And - 21vdc not connected to anything?
Good continuity between battery neg. and voltage regulator case. Checked and cleaned all grounds and connections anyway. Reads -21vdc on output of regulator whether output wire to battery is connected or not. AC voltage input to regulator from stator is good, but don't have a meter that will read Amps.
 

hlw49

Lawn Addict
Joined
Jul 11, 2021
Threads
36
Messages
1,392
R U hooking the volt meter with the negative lead to the regulator out put and the red positive lead to the positive battery post?
 

VRR.DYNDNS>BIZ

Well-Known Member
Joined
Jul 17, 2016
Threads
1
Messages
189
Are you testing the DC output with a good battery connected?
simple test: read battery voltage sitting quiet: "Static " voltage. Run and read again. If within tolerance of max 15v I would say all is good. You early said ok after new regulator, but then reading where curious but not really identified what readings.
 

slomo

Lawn Addict
Joined
Jul 14, 2019
Threads
76
Messages
4,709
This is about to be a 13 page saga. Another sad day......
 
Last edited:
Top