macallis180 296 Posted February 4, 2016 May look at a B-112 that owner says has a bad starter button - sometimes works, sometimes not. Owner has answered my questions, but I want to know if I can start it by jumper to check it out further. Owner lives 3 hrs. away, so don't want to go there without a way to hear it run and drive. Thanks. Share this post Link to post Share on other sites
PhanDad 3,617 Posted February 4, 2016 You can use a jumper cable between the + battery post and the "A" terminal (where the heavy cable attaches) of the S/G. I'd hook the S/G end up first. Also be sure to turn the ignition switch on so the magneto isn't grounded. Share this post Link to post Share on other sites
macallis180 296 Posted February 4, 2016 Thanks Bill. I thought I could do it that way, but wasn't sure. Having never had to start a unit that way, I didn't want to take a chance on doing it wrong. (or burning it up!) Share this post Link to post Share on other sites
Shankman 0 Posted March 2, 2016 Hello what is magnetolook like on my allies Chalmers b112? Share this post Link to post Share on other sites
Shankman 0 Posted March 2, 2016 My tractor runs but can't shut off. Diagram shows wire from ignition switch to mag not connected anybody know where to connect to stop motor, allis-Chalmers b112. Thanks Share this post Link to post Share on other sites
edlincoln 0 Posted March 2, 2016 Should connect were the wire from the points and the mag connect together. all three wires connect together. Share this post Link to post Share on other sites
Shankman 0 Posted March 3, 2016 quote:Originally posted by edlincolnShould connect were the wire from the points and the mag connect together. all three wires connect together. id="quote">id="quote">y Share this post Link to post Share on other sites
Shankman 0 Posted March 3, 2016 What three wires?at the points? Thanks Share this post Link to post Share on other sites
Shankman 0 Posted March 3, 2016 Is the wire from switch suppose to go under engine shroud? There are two black wires from engine, do i connect wire from ig. Switch to both of them? Thats wire diagram shows to mag. Thanks Share this post Link to post Share on other sites
BLT 718 Posted March 3, 2016 On the points and condenser cover, as standard built, there is a rectangular piece of cambric fastened to the top hole of the cover. Above it there is another hole to connect three wires, the condenser and magneto grounding wire from Briggs. You can see a fine single strand wire disappear in to blower shroud for the magneto. And lastly the key switch grounding wire comes out from the instrument area . It is also a fine single strand wire. Share this post Link to post Share on other sites
Shankman 0 Posted March 3, 2016 Is the wire from switch suppose to go under engine shroud? There are two black wires from engine, do i connect wire from ig. Switch to both of them? Thats wire diagram shows to mag. Thanks Share this post Link to post Share on other sites
Shankman 0 Posted March 3, 2016 Thank you . I will try that. Should I get a reading one way or another when ohm test the ignition switch terminal wire that go to mag. Same when turn on or off? Where's can get a switch? What is extra terminal for? Share this post Link to post Share on other sites
BLT 718 Posted March 4, 2016 Switches of that era were one wire case grounded. So with an ohm meter, it should show open "on" and zero or close to it "off". Share this post Link to post Share on other sites
Shankman 0 Posted March 4, 2016 My switch has 5 terminals and has a key Share this post Link to post Share on other sites
Shankman 0 Posted March 4, 2016 Sorry 4 terminals and one is not connected Share this post Link to post Share on other sites
BLT 718 Posted March 4, 2016 OK let's start over. Do you have A - C or Simplicity? Share this post Link to post Share on other sites
BLT 718 Posted March 5, 2016 Do you have push button or or key start. Share this post Link to post Share on other sites
Shankman 0 Posted March 5, 2016 Briggs and Stratton 300421-0127-01-6811041 on engine. Tractor-model B-112. Ser.# 020898. Kevin Share this post Link to post Share on other sites
BLT 718 Posted March 5, 2016 Without a A-C product number this should be the sister version for the Simplicity. http://bsintek.basco.com/BriggsDocumentDisplay/heCBEN8arFZrE3CNj5kbp796Dq.pdf If you look at the wiring section, you'll see a white wire going from the harness down along the carb to the points box. Sorry, I assumed you had the same push button start, they have a blsck mag wire. Share this post Link to post Share on other sites
Shankman 0 Posted March 5, 2016 On page 33 that white wire is the one we are talking about. I will connect all three under points cover. That same page is switch that get no reading on . Stay same on terminal of white wire? Share this post Link to post Share on other sites
BLT 718 Posted March 5, 2016 quote:Originally posted by ShankmanOn page 33 that white wire is the one we are talking about. I will connect all three under points cover. That same page is switch that get no reading on . Stay same on terminal of white wire? id="quote">id="quote">If you have the 4-way plug on the harness , it will go on only one way if memory serves me right. So the terminal the white wire slides over should ignition terminal. Meter reading in ohms should show open with "on", short with "off". Now being your machine almost ready to collect Social Security checks, , the terminals on key switch and plug might need some contact spray to clean them off. Share this post Link to post Share on other sites
Shankman 0 Posted March 6, 2016 HelloBob, thanks for having patience with me. Glad to say my tractor is starting and stopping as it should be. This tractor is example of what USA used to make, and proud people that made them. Seems like everything is junk from China , and doesn't last 5 yrs. Thanks again Share this post Link to post Share on other sites