Register free!

The Green Industry's Resource Center



Reply
 
Thread Tools   Display Modes
  #1  
Old 07-31-2008, 01:06 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
L/C Kawi alternator starts discharging 10 imnutes after blades are engaged ???

Exmark Lazer Z 22hp L/C Kawi .... As stated above it starts discharging only when the blades have been engaged for a while and it will drain the battery fairly quickly. If I let it run without the blades engaged it will charge back up.
I replaced the battery, and the alternator with a rebuilt one regulator is mounted on it. I checked and changed a few safety switches, which don't appear to have anything to do with this problem.

Any suggestions Is it in the pto switch...clutch.... I'm stumped and this is the one thing I'm terrible at diagnosing electrical problems.

Just to let you know I put ona rebuilt alternator which was $160. a new one from Exmark was $365 I think. The only thing I was unshure of was the regulator it looked identical but did not have any writing on it volts , amps etc
Thanks for any help.
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
  #2  
Old 07-31-2008, 07:52 AM
MowerMedic77's Avatar
MowerMedic77 MowerMedic77 is offline
LawnSite Bronze Member
 
Join Date: Jul 2005
Location: In the shop breaking stuff....
Posts: 1,164
Quote:
Originally Posted by MJB View Post
I'm stumped and this is the one thing I'm terrible at diagnosing electrical problems.
Do you have a DVOM or something to give us some voltage readings so we can have a better idea of were the drop is? Have you checked the simple things, good ground, fuses, burnt/corroded/loose, electrical connections?
__________________
Remember that the quality of your question directly affects the quality of your answer. Read here to learn more http://www.lawnsite.com/showthread.php?t=144040

Life is an unrelenting comedy. Therein lies the tragedy of it.

How can I soar like an eagle, when I'm surrounded by turkeys?
Reply With Quote
  #3  
Old 07-31-2008, 10:38 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
Quote:
Originally Posted by MowerMedic77 View Post
Do you have a DVOM or something to give us some voltage readings so we can have a better idea of were the drop is? Have you checked the simple things, good ground, fuses, burnt/corroded/loose, electrical connections?
I've got a digital multi tester. Will that work?
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
  #4  
Old 07-31-2008, 10:42 AM
sawman65's Avatar
sawman65 sawman65 is offline
LawnSite Senior Member
 
Join Date: Mar 2004
Location: johnson city T.N.
Posts: 751
if i recall corectly the lc kaw's have a external regulator i would replace with what came on it.
__________________
calm like a bomb
Reply With Quote
  #5  
Old 07-31-2008, 10:59 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
Quote:
Originally Posted by sawman65 View Post
if i recall corectly the lc kaw's have a external regulator i would replace with what came on it.
If I could find just the regulator that would be great, but my Exmark dealer told me I had to buy the alternator reg combo for $360 ? If I could just get the regulator I would save a bunch if in fact that is the problem. I'll contact another Exmark dealer to see what they say.
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
  #6  
Old 08-02-2008, 02:27 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
How many volts, or amps should the alternator be putting out and what is the best way to test it?? Here is a pic of it on the mower. I tested the upper red wire on the left side and the small black wire on the right and got over 14 I don't remember exactly, but it seems that it is working. But the battery shows the voltage dropping when the longer the engine runs even without the deck engaged. Need help finding the problem.
Attached Images
 
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
  #7  
Old 08-02-2008, 04:20 PM
kawasaki1 kawasaki1 is offline
LawnSite Member
 
Join Date: May 2008
Location: miami fl.
Posts: 108
if it's a belt drive alternator, is the belt tight?
Reply With Quote
  #8  
Old 08-03-2008, 12:13 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
Quote:
Originally Posted by kawasaki1 View Post
if it's a belt drive alternator, is the belt tight?
The belt is not slipping. I have as tight as I can get it without going to a shorter belt. But I need to know how many volts coming out of the alternator & regulator should it have when it's running. I've noticed a slight discharge when I put the meter on it. So I may have something else wrong between the alternator and the battery. Just not sure where to look.
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
  #9  
Old 08-03-2008, 01:37 AM
kawasaki1 kawasaki1 is offline
LawnSite Member
 
Join Date: May 2008
Location: miami fl.
Posts: 108
i'm pretty sure that alt. has the regulator built into it.

find the wire that shows battery voltage with the key on, engine not running. it's probably the big red one.

if the wire shows voltage start the engine and see if voltage goes up.

if you have no voltage with the key on, look for a bad wire or blown fuse. alternators need some battery voltage going to them to be able to charge.

if you have voltage but it doesn't go up when running, take the alt. to autozone or someplace and have them check it.
Reply With Quote
  #10  
Old 08-03-2008, 02:27 AM
MJB's Avatar
MJB MJB is offline
LawnSite Silver Member
 
Join Date: Aug 2000
Location: Wa
Posts: 2,868
Quote:
Originally Posted by kawasaki1 View Post
i'm pretty sure that alt. has the regulator built into it.

find the wire that shows battery voltage with the key on, engine not running. it's probably the big red one.

if the wire shows voltage start the engine and see if voltage goes up.

if you have no voltage with the key on, look for a bad wire or blown fuse. alternators need some battery voltage going to them to be able to charge.

if you have voltage but it doesn't go up when running, take the alt. to autozone or someplace and have them check it.
Thanks I'll try it tommorrow, the shiny chrome on the back is the regulator. So you are right about that.
__________________
MJB

2013 Exmark Pioneer S 60" Ultracut (Review with pics) http://www.lawnsite.com/showthread.php?t=410996

2010 Badboy Outlaw 6100 31 KAWI

2008 Exmark Lazer Z AS 60" U/C 28 Kawi

2000 Exmark Lazer Z 60" L/C Kawi 4100 + hrs strong
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 11:20 AM.

Page generated in 0.09836 seconds with 10 queries