Generac 75D Starting Issue Resolved
Ever since I've owned this 2001 National Marlin (4 years), the Generac 7.5KW diesel generator has been hard to crank and occasionally would start. I had tried everything over several years including 3 starters and 2 solenoids. It turns out that by accident I discovered that the spacer for the starter motor was aluminum and was not permanently attached to the flange that held the motor. This spacer had oxidized to such an extent that the ground path from the starter was restricted and the starter drew excessive amps. It was a grounding issue but not where most everyone suspected. I thoroughly cleaned the spacer and flange, etc. and it cranks every time now. Am also using dielectric grease on all electric connections including the spacer.
I hope this will help someone who might have this setup. I cost me a lot of money and hours of effort.
John & Deanie, Corky and Benji (best buddies)
2001 National Marlin 390 DP
"Try to live up to your dog's opinion of you."