Jhawkins 43 #1 Posted August 19, 2019 I have acquired a 655. I got the points, condenser and coil redone and it runs great. However, the previous owner rewired everything and it’s missing the regulator/rectifier. Where can I buy an aftermarket one to keep my battery charged? Share this post Link to post Share on other sites
ebinmaine 67,274 #2 Posted August 19, 2019 Those don't have a regulator/rectifier. There should be a small plastic square mount on the side if the engine that looks like it has two resistors or fuses. They are diodes if I remember correctly. They each allow 1.5 amps to get to the battery. That is your voltage regulatory system. 1 Share this post Link to post Share on other sites
wallfish 16,985 #3 Posted August 19, 2019 Post some pics of your engine. Most likely the engine has been changed but it's possible it could be original. 1 Share this post Link to post Share on other sites
Jhawkins 43 #4 Posted August 19, 2019 Its definitely been changed Share this post Link to post Share on other sites
wallfish 16,985 #6 Posted August 19, 2019 It may have never had a charging system. You would have seen the charging coils when you did the points and condenser which are all located under the flywheel. Hard to tell from the pics but the throttle linkage looks like it's from a snowblower which wouldn't have the charging coils Share this post Link to post Share on other sites
ebinmaine 67,274 #7 Posted August 19, 2019 Oh wow. You've got a great base there but that wiring needs a re-do. I agree with @wallfish. Was there only 2 magnets in the flywheel or a pile of 'em all the way around? 1 Share this post Link to post Share on other sites
Jhawkins 43 #8 Posted August 20, 2019 There are two coils on each side of the ignition coil module. There are also two wires , one green and a red one with a diode on it that are coming from the coils that are not hooked up Share this post Link to post Share on other sites
Jhawkins 43 #9 Posted August 20, 2019 There is a pile of them all around the flywheel 1 Share this post Link to post Share on other sites
Jhawkins 43 #10 Posted August 20, 2019 I’m redoing all the wiring and that’s why I’m looking for the charging set up so I can do it right 1 Share this post Link to post Share on other sites
ebinmaine 67,274 #11 Posted August 20, 2019 Sounds like it should be able to charge a battery if wired right. @pfrederi might be able to help out a bit here too. Perhaps the right schematic would do you wonders. @953 nut or @gwest_ca may lead us to that. Does it look sorta like this? 1 Share this post Link to post Share on other sites
wallfish 16,985 #12 Posted August 20, 2019 With the diodes connected (they are directional) the system is a 3 amp system. You should test everything with a meter. The wires can go directly to the battery if it's charging at 3 amps. Some of the older engines were like that and the bulletin states if you run the tractor for very long periods of time it could over charge the battery because there's no regulator. Removing one of the diodes was the solution. Nothing to really worry about if you're using the tractor for regular use but it's something to keep an eye on 1 Share this post Link to post Share on other sites
pfrederi 17,665 #13 Posted August 20, 2019 if under your flywheel looks like the top you can have a charging system. if not put in a battery and starter motor recharge it every 2-3 months and you will have electric start with out a charging system..Like my L107 Share this post Link to post Share on other sites
Jhawkins 43 #14 Posted August 20, 2019 Ok it looks slot like your pic ( just not as clean) I just need to know where the two wire hook up at. If I understand right, if I put my meter on it and it’s 3 amps I can just hook it directly to the battery? Share this post Link to post Share on other sites
wallfish 16,985 #15 Posted August 20, 2019 The wire with the diode is the charging wire, is the other the kill wire? Yes, a 3 amp charge can go directly to the battery or it can go to the switch which then goes back to the battery. 1 Share this post Link to post Share on other sites
wallfish 16,985 #16 Posted August 20, 2019 Don not send voltage through the kill wire to the ignition coil. it will ruin the coil 1 Share this post Link to post Share on other sites
Jhawkins 43 #17 Posted August 20, 2019 I’ll test it all tomorrow. Thanks! You guys have been a big help. Was a little sceptical about the Tecumseh motor ( as all my others have Kohler's) but I’m gaining a little confidence now. Share this post Link to post Share on other sites
ebinmaine 67,274 #18 Posted August 20, 2019 14 minutes ago, Jhawkins said: I’ll test it all tomorrow. Thanks! You guys have been a big help. Was a little sceptical about the Tecumseh motor ( as all my others have Kohler's) but I’m gaining a little confidence now. Tecchys are well known to be a bit finicky because they can be a challenge to get timed right. When you have one that runs well they're a great engine with plenty of power given the size. 1 Share this post Link to post Share on other sites
Jhawkins 43 #19 Posted August 20, 2019 ok I just tested it and the one wire with a diode puts out3 amps and the other is a kill wire. Thanks again everyone! 1 Share this post Link to post Share on other sites