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Along with the tractor came a set of problems. Dad had pored engine oil down the breather hole so oil has now accumulated in the cylinders so I have been trying to get the oil out and am now turning the engine by hand. Why turn by hand you ask? When he tried to start the engine, the electrical system went dead. I have replaced the 3 fuses but it is still dead. The battery has an output of 12.38 volts so it is good. Any recommendations for remedies for both my problems? This tractor has been his baby for years and it is killing him about what has happened and is beside himself,
 

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Print these two diagrams: https://partstore.agriculture.newholland.com/us/parts-search.html#epc::mr65672ar676517 https://partstore.agriculture.newholland.com/us/parts-search.html#epc::mr65672ar677185

The 15 amp fuse is the main supply, make sure it is good. Check the other three five amp fuses. Be sure the battery ground us clean and contacting on both ends with no rust under the flat connector bold end. Check the battery positive cable to be sure it is clean and tight, and the other end is tight to the solenoid terminal.

Then begin at the starter by jumping the solenoid to see if the starter will engage and crank the engine over, be sure it is in neutral first.

If the starter engages and cranks the engine, move on to the safety switch and be sure it is functioning properly. Once that is done, trace power with the key on and in the heat position to be sure the glow plugs are working (do this quickly).

Then keep working through the circuits until you know they are all good and functioning.

The oil in the cylinders is a concern, but if you can manually turn the engine over it will not hydro-lock. If everything checks, heat the glow plugs and attempt to start.

It should turn over, but may not start but puff black or heavy grey smoke. If that occurs, put it in high gear and get a slow tow then let out the clutch. If the throttle is in the run position, it will start. Be quick on the clutch to disengage the transmission and put it in neutral and let it cough and gasp the heavy oil out of the cylinders. It will eventually smooth out an run solely on diesel, assuming the filters and pump are in good shape. Let it warm to operating temperature before you shut it down.

Should be ready to go at that point.
 
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