John Deere — Starting the Engine
Operation · Engine starting system
From a John Deere operator's manual covering: 4039, 4045, 6059, 6068, RG4697. Check it applies to your exact model before use.
Applies to: John Deere 4039, John Deere 4045, John Deere 6059, John Deere 6068
Before you start
- Before starting engine in a confined building, install proper outlet exhaust ventilation equipment
- Do not operate the starter for more than 30 seconds at a time; if engine does not start the first time, wait at least 2 minutes before trying again
- If the key switch is released before the engine starts, wait until the starter and the engine stop turning before trying again
Procedure
- Perform all prestarting checks outlined in previous section.
- Open the fuel supply shut-off valve, if equipped.
- If equipped with PTO clutch, pull lever rearward (away from engine) to disengage PTO clutch.
- Pull hand throttle 1/3 of the way out. Turn the handle in either direction to lock it in place.
- If equipped, depress and hold reset button while starting.
- Turn the key switch clockwise to crank the engine. When the engine starts, release the key so that it returns to the "ON" position.
- After the engine starts, continue to hold the reset button in until the oil pressure gauge reads at least 103 kPa (1.03 bar) (15 psi).
- Check all gauges for normal engine operation. If operation is not normal, stop the engine and determine the cause.
Specs & values
- Minimum oil pressure after start: 103 kPa (1.03 bar) (15 psi)
Full service-parts list: John Deere 4039 →, John Deere 4045 →, John Deere 6068 →
Source: John Deere operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.