Maintenance

PTO Safety Switch

Mounted to a tab on the inside left side of the fuel tank support.

1.Stop engine and wait for all moving parts to stop. Engage parking brake. Remove ignition key or spark plug wire(s).

2.With PTO disengaged and the bellcrank touching the rear of the slot in the engine deck, adjust the PTO safety switch (if needed) until the bellcrank arm is 5/16 inch (7.9 mm) from the switch body.

3.Be sure the bellcrank Does Not touch the switch body or damage to the switch could occur.

4.Retighten PTO switch mounting hardware.

Cleaning

Clean Engine and Exhaust System Area

Service Interval: Before each use or daily (May be required more often in dry or dirty conditions.)

CAUTION

Excessive debris around engine cooling air intake and exhaust system area can cause engine, exhaust area, and hydraulic system to overheat which can create a fire hazard.

Clean all debris from engine and exhaust system area.

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Clean all debris from rotating engine air intake screen, around engine shrouding, and exhaust system area.

3.Wipe up any excessive grease or oil around the engine and exhaust system area

Remove Engine Shrouds and Clean Cooling Fins

Service Interval: Every 100 hours

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Remove cooling shrouds from engine and clean cooling fins. Also clean dust, dirt, and oil from external surfaces of engine which can cause improper cooling.

3.Make sure cooling shrouds are properly reinstalled. Operating the engine without cooling shrouds will cause engine damage due to overheating.

37

Page 37
Image 37
Exmark TTS20KAE483 PTO Safety Switch, Clean Engine and Exhaust System Area, Remove Engine Shrouds and Clean Cooling Fins