Wont start..blinking oil light

[mattsoltesz 0]

Hello everyone! I am new to the site...I never had a problem with my Wheel Horse 520-H untill now. WHen I go to start it....nada. No clicking, turning nothing. THe oil light just blinks and the other indicator lights come on as usual. ANy suggestions? THere is oil and its clean.

[oldandred 16]

have you checked the low oil switch ?? :thumbs2:

[mattsoltesz 0]

Where is that located??

[nylyon-(Admin) 8,567]

If the 520 is like my 416, the oil light is supposed to blink until the engine starts. You may try to wiggle the motion control lever to see if that helps.

[TT-(Moderator) 1,169]

Make sure the PTO is completely disengaged too.

[Save Old Iron 1,573]

If your troubleshooting brings you down to the wiring or safety switches, you might fing this useful. I "enhanced" the operators manual wiring diagram to reflect the colors called out on the schematic. HOWEVER, some wiring, such as the 9 pin connector to the engine harness - at least on my 1988 520-H are black. I have taken the liberty of coloring the diagram to reflect the actual "function" of these black wires for readability sake.

Enjoy.

[pfrederi 19,293]

If your troubleshooting brings you down to the wiring or safety switches, you might fing this useful. I "enhanced" the operators manual wiring diagram to reflect the colors called out on the schematic. HOWEVER, some wiring, such as the 9 pin connector to the engine harness - at least on my 1988 520-H are black. I have taken the liberty of coloring the diagram to reflect the actual "function" of these black wires for readability sake.

Enjoy.

That is a nice job on the wiring diagram!! (Sometimes I think WH must have hired teh handicapped e.g. color blind as the wires n the tractor are not always the color in the published diagrams.)

Looking at the chart you have provided I really appreciate my L-107...1 wire no safety switches and 42 years no electrical problems

[92Pony 1]

If the 520 is like my 416, the oil light is supposed to blink until the engine starts. You may try to wiggle the motion control lever to see if that helps.

This was my first thought - motion control lever. Mine gets me about one out of every 5 starts - lol! Also, there's a fuse in the fuse block that could be blown - had that happen once too.

[mattsoltesz 0]

Ok Im stumped now....I checked the motion control swithch, the seat switch, the drive switch. I dont know how to test the three relays. There is power to the solenoid, when I turn the key no power to starter. All the lights are on, on the dash and the oil light blinks. Would it really not start from the oil pressure switch? Is there an easy way to get it....I figure that the fly wheel would have to come off. Any suggestions? :thumbs2:

[kpinnc 16,234]

Ok Im stumped now....I checked the motion control swithch, the seat switch, the drive switch. I dont know how to test the three relays. There is power to the solenoid, when I turn the key no power to starter.

Sounds like you've found the problem. If you're getting 12 volts to the small wire of the solenoid, then the solenoid is the problem, and may need to be replaced. One thing before though- Make sure the solenoid body is properly grounded. Sometimes rust will develop between the solenoid body and the tractor frame, which will open the circuit between the hot wire and ground.

Kevin

[porkchop 1]

I had the exact same problem on mine when I turned the key nothing but the headlights would go dim if on when I tryed it. It was the neutral switch that had rusty terminals where the wires plugged in. There are also 3 fuses to check and make sure they or their plug in,s are not rusty.I could jump accross the solenoid and it would start.You can jump accross the safety switch or mower switch with a wire by making the circuit as per the wiring diagram. This helped me solve the problem. mine is an 1988.

[mattsoltesz 0]

So I jumped the two large terminals on the starter and Viola....it turns over. SO that means the solenoid is bad right?

Now...when it turns over the flywheel spins and wont turn the motor over...... :scratchead:

[Duvall 0]

So I jumped the two large terminals on the starter and Viola....it turns over. SO that means the solenoid is bad right?

Now...when it turns over the flywheel spins and wont turn the motor over......

Not necessarily.

You need to jump from the small terminal on the solenoid to the large connection where the battery wire attaches. Then if it does not crank the engine, you have a bad solenoid.

The flywheel spins but the engine does not spin, or the engine will not start?

[mattsoltesz 0]

You mean the small terminal where the light blue wire is attached??

When i first jumped the two large ones teh whole engine turned over. After a few times just the fly wheel was spinning...the locking pin is still in but it just spins around the crank bolt.....ill have to pull it off and see whats going on.