Zetor Proxima 6421 / 6441 / 7421 / 7441 / 8421 / 8441 service schedule

1. Park level, lower the linkage, stop the engine and take the key out.
2. Check the engine oil on the dipstick between the marks, and look for leaks round the lubrication connections.
3. Check the coolant level and look over the cooling hoses, the fuel tank and fuel lines for leaks.
4. Check the hydrostatic steering tank dipstick, the clutch fluid and the brake fluid levels.
5. Check the tyre pressures and the condition of the hitches and trailer coupling.
6. Look at the air cleaner clogging indicator and service the filter if it shows red.

Tools: Rag

1. Open the drain valve on the air tank until no water comes out, then close it.

Tools: Rag

1. Grease each nipple on the handbook's lubrication chart until fresh grease shows, wiping the nipples first.
2. Check the oil level in the gearbox, portals, front axle housing, reduction gears and front PTO, and top up if low.
3. Blow out the radiator fins with air, working from the engine side.
4. Check the engine belt deflection (7.5 mm under 25 N), the clutch and brake pedal free travel, and the parking and service brakes.
5. Check the battery electrolyte, clean the terminals and coat them with grease.
6. Clean the fuel sedimenter and check the hydrostatic steering clearances and the driver's seat moving parts.

Tools: Grease gun, Spanners, Compressed air (low pressure), Rag

1. Warm the engine, park level, lower everything, stop the engine and take the key out.
2. Hot oil burns, so wear gloves. Remove the sump plug and drain the oil.
3. Remove the oil filter, clean the sealing surface, coat the new seal with fresh oil and fit the filter by hand; the handbook then tightens it a further 3/4 to 1 1/4 turns once the seal seats.
4. Refit the plug and fill with about 10 L through the filler.
5. Run the engine at 750 to 800 rpm for 2 to 3 minutes, stop it, let the level settle and check the dipstick. Check the filter and plug for leaks.

Tools: Drain tray (15 L), Filter wrench, Spanner for sump plug, Funnel, Rags, Gloves

1. Change it with the oil cold. Have the new cartridge ready and a clean 10 L container under the filter.
2. Clean round the filter housing, remove the old cartridge and fit the new one.
3. Pour the spilt oil back into the gearbox if it is clean, run the engine and check for leaks.
4. Check the gearbox dipstick: the level should reach the flat part of the dipstick.

Tools: Clean container (10 L), Filter wrench, Rags

1. Drain the oil warm, from the gearbox drain plug and each portal.
2. Refit the plugs, fill through the filler to the flat part of the dipstick and add the extra litres the handbook gives for hill work or outside hydraulics if you use them.
3. Change the transmission filter if due, run the engine and recheck the level.

Tools: Large drain tray (70 L), Spanners, Funnel or pump

1. Replace the cartridge and bleed the fuel system as the handbook shows.
2. Have the dealer check injector opening pressure and the injection pump at the chart's longer intervals.

Tools: Filter wrench, Container for diesel, Rags

1. Book it with a Zetor dealer, or have a competent mechanic do it on a cold engine. Check your service book for the repeat interval.

Tools: Torque wrench, Feeler gauges

1. Fill the tank, change the oil and filters before storing, charge and remove the battery.
2. Start and run the engine for a few minutes once every three months while the tractor is stored.

Tools: Blocks

1. Turn the hubs so the drain plugs are at the bottom and drain the housing and the two reduction gears.
2. Refill to the level plugs and refit them.
3. Do the front PTO housing at the same time if the tractor has one, then check for leaks.

Tools: Drain tray, Spanners, Oil pump

1. Bleed the brakes with fresh fluid following the handbook's bleeding order.
2. Drain the cooling system when below boiling, flush it and refill with the antifreeze mix, then run the engine up to temperature and top up.

Tools: Brake bleeding kit, Drain tray, Funnel