John Deere 4020 GAS generator issues

   / John Deere 4020 GAS generator issues #1  

mjp9348

New member
Joined
Mar 2, 2018
Messages
2
Location
morris illinois
Tractor
john Deere 4020 GAS
Hi everyone, I am posting just to get some ideas on where to start the diagnosis on this generator issue . This was my grandfathers tractor , it sold at auction , and today I found it and purchased it back . The guy who owned it told me , he replaced the battery , the points to electronic ignition , new battery cables . Now a year ago this tractor never had a genny issue , you would start it up and at idle the genny light would be on until you gave it gas then it would go off and stay off . The guy I bought it from said during the last 9 , 10 months he has had it and doing the work he did , he said sometimes it wont shut off and sometimes it works like it should , but when it wont shut off , he jumps the genny to excite it to charge . Now I watched him do it , but the light would come back on a minute later . I think it maybe time to clean , maybe rebuild the genny , but I am unsure , if anyone has any ideas or suggestions I would love to hear them on how to address this issue . 12V system
 
   / John Deere 4020 GAS generator issues #2  
Since you state it has been converted to electronic ign. has the battery been converted to negative ground?
 
   / John Deere 4020 GAS generator issues #3  
Check clean and adjust the voltage regulator
 

Marketplace Items

2025 MMS MS36C (A53317)
2025 MMS MS36C...
2025 JMR 36in Bucket Mini Skid Steer Attachment (A59228)
2025 JMR 36in...
HYDRAULIC WINCH RACK (A58214)
HYDRAULIC WINCH...
John Deere 652R 52in Stand-On Commercial Mower (A56857)
John Deere 652R...
3ft Metal 5-Point Star Art (A55853)
3ft Metal 5-Point...
2019 KENWORTH T680 TANDEM AXLE SLEEPER (A59904)
2019 KENWORTH T680...
 
Top