Register free!
Search
 
     

The Green Industry's Resource Center


Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 05-15-2013, 05:03 PM
dfor's Avatar
dfor dfor is offline
LawnSite Senior Member
 
Join Date: Dec 1999
Location: So. New England
Posts: 845
Can you jump start a 12 volt mower battery

I think my charging system on my walk behind mower is on the fritz. Sometimes I will have enough juice to start the mower, but not enough to engage the blades with the pto switch. Is that possible??

Secondly, can you jump start a mower using one of those portable jump starters??

Thanks.
__________________
Mama, whats vacation mean???
____________________________
Reply With Quote
  #2  
Old 05-15-2013, 05:11 PM
knox gsl's Avatar
knox gsl knox gsl is online now
LawnSite Gold Member
 
Join Date: Jun 2010
Location: knoxville, tn
Posts: 3,596
Yes.
Posted via Mobile Device
Reply With Quote
  #3  
Old 05-15-2013, 05:52 PM
Restrorob's Avatar
Restrorob Restrorob is offline
LawnSite Fanatic
 
Join Date: Apr 2005
Location: Show'n my truck off !
Posts: 10,602
As knox said yes, You can jump start the engine..... But engaging the pto afterwards will drain the battery quickly with no charging system, Continued use without the charging system can result in ruining a good battery and burning up a good clutch......

Just for info sake...... NEVER jump start a fuel injected engine, A voltage spike when jumper is removed can smoke the ECU to the tune of $400 bux....
__________________
Quote:
Originally Posted by piston slapper View Post
You never learn anything until you admit you don't know it all...

"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Reply With Quote
  #4  
Old 05-15-2013, 06:49 PM
dfor's Avatar
dfor dfor is offline
LawnSite Senior Member
 
Join Date: Dec 1999
Location: So. New England
Posts: 845
Restrorob, what part usually needs replacing when the charging system fails. It's a 17 hp Kawasaki. Thanks.
__________________
Mama, whats vacation mean???
____________________________
Reply With Quote
  #5  
Old 05-15-2013, 07:04 PM
Restrorob's Avatar
Restrorob Restrorob is offline
LawnSite Fanatic
 
Join Date: Apr 2005
Location: Show'n my truck off !
Posts: 10,602
There's too many things that can fail, That's why it's best to start testing each component until the faulty part is found.

I start at the voltage regulator power supply wire (wire from unit harness to regulator) and make sure there's battery voltage there with key either off or in run position, Could be as simple as a blown fuse.

If voltage is present at the regulator perform a running unregulated stator test, If the stator passes, The voltage regulator is likely the faulty part......
__________________
Quote:
Originally Posted by piston slapper View Post
You never learn anything until you admit you don't know it all...

"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
Reply With Quote
  #6  
Old 05-15-2013, 09:52 PM
knox gsl's Avatar
knox gsl knox gsl is online now
LawnSite Gold Member
 
Join Date: Jun 2010
Location: knoxville, tn
Posts: 3,596
For me its always been best to look at the cables to the battery and ground strap. If that passes then dig deeper. I got all nerdy and spent about 2 hours trying to find a bad connection in the wiring harness or a bad switch to then see that the ground strap was loose.
__________________
I've never been skydiving, but I have zoomed-in on Google Earth really fast.
Reply With Quote
  #7  
Old 06-20-2013, 06:39 PM
dfor's Avatar
dfor dfor is offline
LawnSite Senior Member
 
Join Date: Dec 1999
Location: So. New England
Posts: 845
Update:

The problem ended up being the wiring harness in the middle of the picture. Bad connection in there. Thanks for the help and suggestions.

__________________
Mama, whats vacation mean???
____________________________
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 09:36 PM.

Page generated in 0.07519 seconds with 9 queries