John Deere Tractor 4250

Avoid unnecessary engine idling

Check engine oil level (A) and coolant level (B) more frequently. Watch for any sign of leaks.

If engine oil must be added during break-in, use seasonal viscosity grade oil, meeting specifications given in Fuels and Lubricants section.

Check engine air intake system hoses and hose clamps (A) for tightness.

Check and adjust drive belt tensions (A). Do not pry on alternator cover. Pry only on mounting brackets. (See Adjusting Belts in Service section.)

Check and retighten wheel-to-rim (A) and axle (B) bolts after first 3 and 10 hours of operation. Torque specifications are given in Wheels, Tires, and Treads section.

Sign off on the 100 Hourly Maintenance

Follow the steps below for the 2 Yearly Maintenance.

Drain, flush, and refill cooling system as instructed in Service section.

Upload a photo of the cleaned radiator and oil-cleaner-condenser with straightened fins.

Upload a photo of the replaced thermostats.

Sign off on the 2 Yearly Maintenance

1. CHANGE ENGINE OIL AND FILTER.

Run engine to warm oil. Stop engine. Remove crankcase drain plug (A) and filter drain plug (B). Replace plugs after oil drains out.

Replace engine oil filer (C) and packing. Remove old packing and clean filter mounting pad. Oil new packing and install new element. Hand tighten only. Crankcase capacity with filter is 18 qt. (17.0 L).

Refill crankcase with seasonal viscosity grade oil recommended in the Fuels and Lubricants section.

Start engine and check for leaks.

Stop engine. Recheck oil level.

2. CHECK MFWD DRIVE AXLE HOUSING AND WHEEL HUB OIL LEVEL.

Place vehicle on level ground. Turn wheel hubs until the words ""OIL LEVEL"" are horizontal. Remove plug (A). Oil level should be just below plug hole. If low, add Gear Lubricant through plug hole (B).

Check axle housing oil level (C). Oil level should be just below plug hole. If low add through same hole. Use lubricant specified under Gear Lubricant in Fuel and Lubricant section.

With tractor parked on level ground, remove dipstick (A) and check oil level. Oil level should be between two marks on dipstick. If needed, add oil recommended in Fuels and Lubricants section in filler hole (B).

Remove radiator cap (A) and check coolant level. Coolant level should be approximately 3-3/4 in. (95 mm) below top of filler neck.

If coolant level is low, check for any signs of leakage and repair if necessary. Check all hose clamps for tightness.

Add 50 per cent soft water ethylene glycol type, antifreeze mixture specified in Service section.

3. CHECK TRANSMISSION-HYDRAULIC OIL LEVEL.

With tractor on level ground, remove dipstick (A). If oil level is below the ""safe"" zone, remove filler cap (B) and add hydraulic oil under Transmission-Hydraulic Oils specified in Fuels and Lubricants section.

1. REPLACE TRANSMISSION AND HYDRAULIC FILTER ELEMENTS.

Replace transmission filter elements at least once a year, even if indicator lamp has not come on, (Refer to 600 Hour Service in this section).

Replace hydraulic filter if not recently replaced during a 600 hour service.

2. REPLACE PRIMARY (A) AND SECONDARY (B) AIR CLEANER ELEMENTS at least once a year. (See Service section.);