MTD w/17.5 HP Tecumseh charging problem

Reply

  #1  
Old 04-23-06, 05:58 PM
Member
Thread Starter
Join Date: Apr 2006
Posts: 4
MTD w/17.5 HP Tecumseh charging problem

I'm having a problem with my MTD Yardmachine tractor. It has a 17.5 HP tecumseh engine. I can get it to start with a fresh battery or a jump. After it is shut down, it seems as though the battery is drained so that it doesnt have the juice to start the tractor again. Jump it, and it starts and runs ok. Am i having charging issues? I hooked up an ammeter to the battery terms while running the tractor and it showed a constant 17.29 vDC the entire time. Im at a loss. How do I access the stator underneath the flywheel, and after i do access it how do I test it? Any help would be greatly appreciated.
 
Sponsored Links
  #2  
Old 04-23-06, 06:12 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
Before you tear anything apart, have the batery tested, if the charging system is able to generate 17 volts, it's O.K. The life of O.P.E. batteries is short. start with that!!
 
  #3  
Old 04-23-06, 06:28 PM
Member
Thread Starter
Join Date: Apr 2006
Posts: 4
This is a brand new battery, and It started the engine a few times on its own. After that, nothing.
 
  #4  
Old 04-23-06, 06:41 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
Take a regular test light (NOT A L.E.D. one the tool guys want to sell). Disconnect one terminal (the neg) of the battery. Put one end of the light on the battery terminal, & the other on the cable you just disconnected. If everything is turned off, the light should be out. If it's on, ya gotta draw on the battery. 17 volts is kinda high, check the voltage drops on your grounds when the engine is running incase of a poor ground
 
  #5  
Old 04-23-06, 06:50 PM
Member
Thread Starter
Join Date: Apr 2006
Posts: 4
Thanks, Ill try it but Im losing patience. I will tell you that with the ammeter on the battery (both terminals hooked up) when you turn the key to start the engine, the voltage drops immediately to 3 or 4 volts then goes back to around 16 or 17 v. Placing the ammeter on the cables (pos and neg) not attached to the battery I get a reading of app. 2 to 3 volts with the engine running. With the ammeter attached to the wires coming from the flywheel (I assume the stator) with the engine running i get approximately 9.5 volts. Ive checked most of the connections, unless Im missing something, and I dont see any burned or damaged wiring.
 
  #6  
Old 04-23-06, 06:57 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
Are you measuring "AMPS" or "VOLTS" You don"t connect an ammeter to both terminals of a battery. If volts, when you put a load on the battery, if it drops to 4 volts, than you need another new battery.
 
  #7  
Old 04-23-06, 06:59 PM
Member
Thread Starter
Join Date: Apr 2006
Posts: 4
Im measuring volts. This is the fifth battery.
 
  #8  
Old 04-23-06, 07:32 PM
hopkinsr2's Avatar
Member
Join Date: Feb 2005
Location: canada
Posts: 1,561
Originally Posted by Drummer75
Thanks, Ill try it but Im losing patience. I will tell you that with the ammeter on the battery (both terminals hooked up) when you turn the key to start the engine, the voltage drops immediately to 3 or 4 volts then goes back to around 16 or 17 v. Placing the ammeter on the cables (pos and neg) not attached to the battery I get a reading of app. 2 to 3 volts with the engine running. With the ammeter attached to the wires coming from the flywheel (I assume the stator) with the engine running i get approximately 9.5 volts. Ive checked most of the connections, unless Im missing something, and I dont see any burned or damaged wiring.
I'm confused here. What kind of meter are you using? There is a diode in the system. Can you check the voltage drop of the grounds, & the starter draw?? Still doesen't sound like a charge system with 17 volts @ the battery Did you check for a drain on the battery with everything off?? 3 or 4 volts @ the battery when cranking indicates a weak battery or excessive starter currant draw
 
Reply

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes