CountryRock 199 #1 Posted October 1, 2018 (edited) Are there any diagrams or schematics of the charging system on the GT2500? I want to go through and make sure everything is good and working properly. Only showing 12-12.5v at the battery when running wide open. Edited October 1, 2018 by CountryRock Share this post Link to post Share on other sites
953 nut 58,136 #2 Posted October 1, 2018 (edited) This manual should get you headed in the right direction. Edited October 1, 2018 by 953 nut 1 Share this post Link to post Share on other sites
CountryRock 199 #3 Posted October 1, 2018 I have that, but I'm not quite sure what goes to what. Share this post Link to post Share on other sites
953 nut 58,136 #4 Posted October 1, 2018 There is no external regulator on the B&S engines, just a diode on the output. I don't own any of these so not too sure what it looks like. May want to do another post to attract the attention of folks who have B&S charging system experience. 2 Share this post Link to post Share on other sites
pfrederi 18,366 #5 Posted October 1, 2018 Sounds just like 3 amp unregulated system used on Kohlers and some Techys. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,267 #6 Posted October 1, 2018 May help Garry 2 Share this post Link to post Share on other sites
CountryRock 199 #7 Posted October 1, 2018 I cleaned up the main ground and the positive connection at the solenoid. Alternator connection seems ok. Getting 12.5-12.6v at battery while wide open. What should it read? Share this post Link to post Share on other sites
CountryRock 199 #8 Posted October 1, 2018 Checked DC voltage at alternator connector, reads 14.4v, so alternator is good. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,267 #9 Posted October 1, 2018 Bump the starter a couple of times without allowing the engine to start to remove any surface charge in the battery. Check the battery voltage without the motor running. Start motor and see if the voltage increases above the not running voltage. If it increases there is charge current available and I would just go with it. The condition of the battery can affect the charge rate. Have another known good battery to try? Garry 1 Share this post Link to post Share on other sites
CountryRock 199 #10 Posted October 1, 2018 I swapped for a good battery too. Motor off is 12.2v Share this post Link to post Share on other sites
CountryRock 199 #11 Posted October 1, 2018 I'm used to my other newer horse putting out 14.4 on a Briggs twin. I know, different system. Share this post Link to post Share on other sites
CountryRock 199 #12 Posted June 8, 2019 Would it make a difference that I switched this tractor from points to magneto? Would that mean I need a different ignition switch to get it to charge properly? Share this post Link to post Share on other sites
pfrederi 18,366 #13 Posted June 8, 2019 If you change to a Magneto engine you must change your ignition switch or you will fry your magneto. Battery points system the ignition switch feeds power through the "I" terminal to the coil to make engine run. A mag system the ignition switch grounds the magneto through the "M" terminal when you turn it off. Share this post Link to post Share on other sites
CountryRock 199 #14 Posted June 8, 2019 I changed to the magnetron ignition last year on that engine. I was bored last night and was looking at schematics and doing a little research and saw where someone with a different tractor went from magneto to points and was told about the ignition switch so I wasn't sure if that would make a difference on my tractor. Share this post Link to post Share on other sites
