Tennant Scrubber--Sweeper M20

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine

Disconnect the vacuum hose from the rear squeegee assembly

Remove both mounting knobs from the rear squeegee assembly

Turn on the machine, raise the scrub head, and turn off the machine

Remove the rear squeegee assembly from the machine

Loosen the rear retaining band tension latch and open the retaining band

Install the new rear squeegee blade or rotate the existing blade to the new edge. Be sure all the holes in the squeegee blade are hooked onto the tabs

NOTE: Replace FaST System Filter

Remove both flush hoses from the storage bag located behind the operator seat

Lock the operator seat cover open

Disconnect the ec--H2O system intake hose from the solution supply hose and connect the intake flush hose (gray connector) to the ec--H2O system intake hose

Disconnect the ec--H2O system outlet hose from the hose to the scrub head and connect the outlet flush hose (black connector) to the ec--H2O system outlet hose

Place the ec--H2O system intake hose into a container containing 5 gallons (19 liters) of white or rice vinegar. Place the outlet hose into an empty bucket

Turn the key to the on position without starting the engine

Press and release the ec--H2O module flush switch to start the flush cycle

NOTE: The module will automatically shut off when the flush cycle is complete (approx. 7 minutes). The module must run the full 7 minute cycle in order to reset the system indicator light and alarm

- ADJUSTING THE MAIN BRUSH TAPER

1. Loosen the four mounting bolts on the brush drive housing

2. Move the brush drive housing up to decrease the pattern width on that side of the scrub head or down to increase the pattern width on that side of the scrub head

4. Recheck the pattern. Readjust if necessary

- ADJUSTING THE MAIN BRUSH WIDTH

1. Adjust the length of the drag links on both sides of the scrub head. Lengthen the drag links to increase the rear brush pattern width. Shorten the drag links to increase the front brush pattern. Always adjust the nut on each drag link an equal number of turns

NOTE: Two full turns of the drag link adjustment bolt will change the brush pattern approximately 25 mm (1 in)

2. Recheck the pattern. Readjust if necessary;

Replace Hydraulic reservoir filler cap

Check hydraulic hoses for wear and damage

Flush the radiator and the cooling system

Torque shaft nut of the propeller motor

Clean and tighten battery cable connections

Sign off on the 800 Hourly Scrubber-Sweeper Maintenance

Check fluid level in Hydraulic fluid reservoir

Check tank cover seals for damage or wear

Check main brushes for damage and wear

Shake Hopper dust filter to clean

Check Side Squeegee Blades for damage and wear

Clean hopper, debris screen, and hose