Re: Basic Tractor Wiring - Question

Posted by Gerald J. on July 15, 2007 at 08:59:59 from (67.0.103.85):

In Reply to: Basic Tractor Wiring - Question posted by Billy NY on July 15, 2007 at 07:19:46:

The engine won't run without a good fuel shutoff solenoid. With power applied, it opens fuel flow to the main jet. The screw at the middle of the end near where the lug was is grounded, its the main jet adjustment. Grounding that wire shorts ignition power.

You could have a fried resistor which may be in the ignition switch. At least my 4020 uses a 6 volt coil with a series resistor in the ignition switch or an iron wire in the wiring. That resistor is shorted by an auxliary contact on the starter solenoid to get better ignition while cranking.

You need a wiring diagram for the tractor to be sure and it may be in the parts book which you may be able to locate at JD Parts on line.

Many tractors have been made to run (probably a bit on the rich side) by cutting off the needle from the inside end of the shut off solenoid. There is a chance they will diesel when shut down hot or with the throttle open.

With knowing about the resistor and starter soleniod contact and that fuel shut off solenoid which has to have proper power for the engine to run, I don't know of anything else unique about the 2020 ignition system.

My neighbor's 2020 got hard to start in the winter and one day I went over and choked it really hard and it ran for me. The next summer I had borrowed it (and the neighbor) to use the loader as a work platform for some tree pruning and it got so it would only run at an idle and then only for a few seconds. Checking for fuel, I found none in the float bowl, but a good flow from the line when disconnected from the carburet inlet fitting. I removed that fitting and found a screen that was essentially plugged solid. I had 60 psi in my air tank and couldn't detect air flow through the screen. Deere didn't have a replacement so they drilled a hole in the screen, then after reassembly, the tractor ran fine.

Gerald J.

Replies:

• Re: Basic Tractor Wiring - Question Billy NY 13:37:29 07/15/07 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]