John Deere — Daily Prestarting Checks
Maintenance · Engine
From a John Deere owner's manual covering: 4045TF120, 6068HF158, 6068TF120, 6068TF250. Check it applies to your exact model before use.
Applies to: John Deere 4045TF120, John Deere 6068TF120, John Deere 6068TF250
Before you start
- Only remove filler cap when engine is cold or cool enough to touch.
- DO NOT add makeup oil until oil level is BELOW the add mark.
Procedure
- Check engine oil level on dipstick; add as required.
- Check coolant level when engine is cold; level at bottom of filler neck.
- Check single or dual fuel filters for water or debris; drain as needed.
- Squeeze air cleaner dust unloader valve; check restriction indicator.
- Inspect engine compartment for leaks, worn belts, loose connections and trash.
Specs & values
- Maximum air intake restriction is 6.25 kPa (0.06 bar) (1.0 psi) (25 in. H2O)
Full service-parts list: John Deere 6068TF250 →
Source: John Deere owner'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.