We just had a regulator go bad on our 650. It's not hard to pin out, but if you are not familiar with a voltmeter or can't find the pin assignments for a 750, another way to test the battery would be to try jumping it with a second battery using jumper cables when it is "dead". I'm not familiar with the 750 or how easy it would be to do this but on the 650 all you had to do was pull the side cover. If it starts it's probably the regulator.
On Tuesday, January 18, 2022 at 10:47:55 PM UTC-5 wrench...@gmail.com wrote: > The voltage of a dead battery might go back up a little as it sits > overnight, enough to move the starter. > Eliminate that problem, and YES, do go over the bike and tighten things > like the bolts that secure the coils to the frame. > > Once you have the multimeter, you can test the other parts that could be > failing. > > Your failure is either electrical related or heat/expansion related. > Eliminate electric stuff first. > > > On Wed, Jan 19, 2022 at 11:41 AM Francisco Gomez <cum.g...@gmail.com> > wrote: > >> Drew thanks a lot for your answer, I will test the regulator to check if >> it is ok, more than 14 volts. >> But something strange is, when the engine become cold, the starter motor >> move the engine very well, this is my problem. >> As soon as we get the results, will paste on the forum discussion >> Beste regards >> >> El mar., 18 de enero de 2022 23:28, Greg Holuban <gma...@msn.com> >> escribió: >> >>> Starter solenoid? >>> >>> Sent from my Verizon, Samsung Galaxy smartphone >>> Get Outlook for Android <https://aka.ms/AAb9ysg> >>> ------------------------------ >>> *From:* nighthaw...@googlegroups.com <nighthaw...@googlegroups.com> on >>> behalf of Drew Gormley <wrench...@gmail.com> >>> *Sent:* Tuesday, January 18, 2022 7:13:17 PM >>> *To:* nighthaw...@googlegroups.com <nighthaw...@googlegroups.com> >>> *Subject:* Re: [Nighthawk Lovers] Mystery Problem with my Nighthawk 1998 >>> >>> >>> Battery might get too low if your regulator is failed. >>> >>> You need to check the volts with a mutli-meter when the bike is running >>> below 2k rpms and above. >>> Above it should be putting out 14 v (about that much) >>> >>> If it isn't your regulator is gone and the battery is dying as you ride. >>> Nothing is recharging it. >>> >>> >>> On Wed, Jan 19, 2022 at 10:35 AM Francisco Gomez <cum.g...@gmail.com> >>> wrote: >>> >>> Hello Nighthawk lovers, this is Francisco Gomez, Seven Fifty 750 owner, >>> year1998, Seven Fifty is a Nighthawk European model, it has some >>> performance instead American Night hawk, but basically is the same engine. >>> Now I detected a problem in my Motorcycle which is as follow: When the >>> engine is hot, after some millage done, the engine can not start again,it´s >>> lock like as battery bad, the starter motor can not move the engine, and I >>> already checked the Starter motor, condition of Battery ( was good ) and >>> almost wires and all things related to ignition system, but any problem was >>> found, only when the engine is cold the starter motor function very well. >>> Please, some body of this group has some experience about how to solve >>> this problem. >>> I will appreciated so much your guidance and opinion in this matter >>> Best regards >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nighthawk_love...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/nighthawk_lovers/CAKzf0erzyFOiEaswxwqPHJ8Wi3TR9Z5ZVOvE907cnXbtOQQMng%40mail.gmail.com >>> >>> <https://groups.google.com/d/msgid/nighthawk_lovers/CAKzf0erzyFOiEaswxwqPHJ8Wi3TR9Z5ZVOvE907cnXbtOQQMng%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nighthawk_love...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/nighthawk_lovers/CAJLiyZfbBP8knqkOD9d6h8AhwLMhMJ_wn8Ai6DxKsrQE49CdAg%40mail.gmail.com >>> >>> <https://groups.google.com/d/msgid/nighthawk_lovers/CAJLiyZfbBP8knqkOD9d6h8AhwLMhMJ_wn8Ai6DxKsrQE49CdAg%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nighthawk_love...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/nighthawk_lovers/BL0PR02MB43372E106054931F7DDD556FF2599%40BL0PR02MB4337.namprd02.prod.outlook.com >>> >>> <https://groups.google.com/d/msgid/nighthawk_lovers/BL0PR02MB43372E106054931F7DDD556FF2599%40BL0PR02MB4337.namprd02.prod.outlook.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to nighthawk_love...@googlegroups.com. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/nighthawk_lovers/CAKzf0eqAaoiu6w%2BJPyaBUSH1mS-wUCXYTi%2BSp0SThxcHYqPCFA%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/nighthawk_lovers/CAKzf0eqAaoiu6w%2BJPyaBUSH1mS-wUCXYTi%2BSp0SThxcHYqPCFA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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