Scag Power Equipment STT-28CAT manual Engine Oil, Engine Fuel System

Section 7 R

C. Changing Hydraulic Oil Filter Element

The hydraulic oil filter should be changed after every 500 hours of operation or annually, whichever occurs first.

1.Remove the oil filter element (Figure 7-3) and properly discard it. Fill the new filter with clean oil and install the filter. Hand tighten only.

2.Run the engine at idle speed with the speed control lever in neutral for five minutes.

3.Check the oil level in the hydraulic tank. It must be 3" inches from the top of the filler neck. If necessary, add SAE 20W50 motor oil.

7.4 Engine Oil

Engine Oil

Filter

Figure 7-4. Engine Oil Filter

A. Checking Engine Crankcase Oil Level

The engine oil level should be checked after every 8 hours of operation or daily as instructed in the Engine Operator’s Manual furnished with this mower.

B. Changing Engine Crankcase Oil

After the first 20 hours of operation, change the engine crankcase oil and replace the oil filter. Thereafter, change the engine crankcase oil after every 100 hours of operation or bi-weekly, whichever occurs first. Refer to the Engine Operator’s Manual furnished with this mower for instructions.

C. Changing Engine Oil Filter

After the first 20 hours of operation, replace the engine oil filter. Thereafter, replace the oil filter after every 200 hours of operation or every month, whichever occurs first. Refer to Engine Operator’s Manual for instructions (See

Figure 7-4).

7.5 Engine Fuel System

DANGER

To avoid injury from burns, allow the mower to cool before removing the fuel tank cap and refueling.

Engine Fuel

Filter

Fuel Shutoff Valve

2008 STT-CAT EFF

Figure 7-5. Fuel Filter

A. Filling the Fuel Tank

Fill the fuel tank at the beginning of each operating day to within one inch below the filler neck. Do not overfill. Use clean, fresh diesel fuel with a minimum cetane rating of 40.

33