upstate yank 219 #1 Posted February 6, 2018 well guys i have been off here for a few days as i am still trying to get the old 73 to run; i have changed coils and they both do work even the plug wire i have changed but i still am not able to get a spark off the plug ;the condenser has been replaced to a new one attached 'what bothers me is the way the previous owner wired the positive side as most can see in the picture that the wires off the positive side of the coil are connected to the wires off the seat switch which is not right as the switch does not work ; ;so now looking at the other picture where it does show a wire coming off that one post of the solenoid it looks as a ground ;it seems i will have to start from the key switch and trace each wire but even the switch for the electric clutch has been tapped off ;i am sure it will need both safety switches for the pedal and even the pto but on this tractor either are there to even trace ;this is what some would call a plumbers nightmare but i sure would like to hear it run than move on to the other parts it needs 'so come on guys rack your heads together and try to tell me where to go 'sure his boys drove it around but really how did they get it to start .but we all know people will tell you anything to pass something off ;sorry i have to look myself in the mirror each day and have a good night's sleep 'but still for the 100 in time it will work out Share this post Link to post Share on other sites
moe1965 751 #2 Posted February 6, 2018 (edited) I'm not that good trying to figure out electrical issues but I would check the gap in the points Edited February 6, 2018 by moe1965 Share this post Link to post Share on other sites
953 nut 57,402 #3 Posted February 6, 2018 For the purpose of testing you can remove the wire to the coil"+" and replace it with a jumper to the battery "+", that should get you a spark if the points are working. 4 Share this post Link to post Share on other sites
ol550 830 #4 Posted February 6, 2018 (edited) or just see if you have battery voltage to the coil + terminal when cranking. If you have a test light you can check the point operation by the - terminal. Light on points open light off points closed. I like to check for a steady blinking light when cranking. Random blink dirty or corroded contacts. Edited February 6, 2018 by ol550 1 Share this post Link to post Share on other sites
BOB ELLISON 2,981 #5 Posted February 6, 2018 I don't know if you have a wiring diagram or not. But this diagram is of my C160 . The wires may be a different color then yours but trace a wire and it should be routed just like this. 5 Share this post Link to post Share on other sites
upstate yank 219 #6 Posted February 6, 2018 thanks everyone for the feedback and yep once it gets a little warmer outside i will run a jumper from the plus side of the coil to the battery 'the points are clean and open as they should plus the gap is correct 'and thanks for the wiring diagram that sure will help ' 3 Share this post Link to post Share on other sites