Operation Manual

Owner’s Manual

CORE 50 Sweeper Scrubber Page 35

PowerBoss

The Power of Clean

SERVICE INSTRUCTIONS (CONTINUED)

COOLANT SYSTEM

BLOWING OUT RADIATOR FINS

REVERSE FLOW FLUSHING

1. At the engine, disconnect the hoses.

2. Make sure the radiator cap is on tight.

3. Using a hose clamp, clamp a flushing gun onto the lower hose.

4. Turn on the water and fill the radiator.

5. To keep from damaging the radiator, apply air pressure slowly and

carefully.

6. Shut off the air pressure, refill the radiator with water, and reapply the air

pressure. You will need to repeat these steps until water flushed from the

radiator runs out clear.

7. Inspect and clean the radiator cap.

8. Inspect and reconnect the hoses.

9. Refill the radiator with coolant.

NOTE

Make sure radiator is cool before blowing out the

radiator fins with compressed air. Be careful that the

radiator fins are not bent by the compressed air. Any

fins that are bent should be straightened.

In GM engines, use only long life engine coolant that meets

GM specification number GM6277M or equivalent. This

coolant is orange in color and is readily available under

various trade names such as Dexcool™.

ATTENTION!

Never add green colored ethylene glycol coolant in a

cooling system that uses orange colored coolant.

Engine damage may occur. These two coolants are not

compatible.