Hayter Mowers RZT420H manual Servicing the Engine Oil, Checking the Oil Level

Replace a dirty, bent, or damaged element. Handle new elements carefully; do not use if the rubber seal is damaged.

4. Clean all air cleaner components of any accumulated dirt or foreign material. Prevent any dirt from entering the carburettor.

5. Install the air cleaner element with the pleated side “out” and seat the rubber seal onto the edges of the air cleaner base (Figure 32).

6. Reinstall the air cleaner cover and secure with the two knobs (Figure 32).

Servicing the Engine Oil

Oil Type: Detergent oil (API service SG, SH, SJ, or higher)

Crankcase Capacity: 1.6 qt (1.5 l) when the filter is changed

Viscosity: See the table below.			Figure 34
1.		Oil dipstick	3. Oil level
	2.	Filler tube

Figure 33

Checking the Oil Level

Service Interval: Before each use or daily—Check the engine oil level.

1.Park the machine on a level surface, disengage the blade control switch, stop the engine, and remove the key.

2.Make sure the engine is stopped, level, and is cool so the oil has had time to drain into the sump.

3.To keep dirt, grass clippings, etc., out of the engine, clean the area around the oil fill cap/dipstick before removing it.

4.Pull and remove the oil fill cap/dipstick; wipe oil off. Reinsert the dipstick and push firmly into place (Figure 34).

5.Remove the dipstick and check the oil level. (Figure 34).

The oil level should be up to, but not over, the F mark on the dipstick.

6.If the level is low, add oil of the proper type, up to the F mark on the dipstick. Always check the level with the dipstick before adding more oil.

Note: To prevent extensive engine wear or damage, always maintain the proper oil level in the crankcase. Never operate the engine with the oil level below the “L” mark or over the “F” mark on the dipstick.

Changing the Oil and the Filter

Service Interval: Every 100 hours—Change the engine oil and filter.

Refill with service class SG, SH, SJ or higher oil as specified in the “Viscosity Grades” table.

Change the oil and filter while the engine is still warm. The oil will flow more freely and carry away more impurities. Make sure the engine is level when filling, checking, or changing the oil.

Change the oil and oil filter as follows:

1.Start the engine and let it run until warm. This warms the oil so it drains better.

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