Maintenance Instructions

CLEANING

10.Install the cover with the word “DOWN” properly oriented to the bottom of the canister. Twist the OptiAir™ cover to the right and put into the "closed" position.

Mono Latch

Twist Lock™

2 3

DOWN

Orient to Bottom

of Canister

Dust Ejection

Valve

Proper Orientation of Air Cleaner Cover

11.Check the air intake hose for cuts, nicks, cracks, etc., and the hose clamps for tightness.

12.Reset the air restriction indicator (press button on the end of indicator).

Engine Cooling System

Air Intake System

To prevent engine overheating and possible engine damage, clean grass clippings, chaff, and dirt from the rotating engine air intake screen after every 8 hours of operation. In certain mowing conditions (dry grass, leaves, tree “cotton”, etc.), it may be necessary to check and clean the screen several times each day to prevent engine overheating.

CAUTION

Operating the engine with a blocked air intake screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage from overheating.

Rotating Engine Screen

Keep Engine Screen Clean

Cylinder Head Cooling Fins

It is essential for performance and longevity of the air-cooled engine to keep the cylinder head cooling fins clean and free of obstruction. After every 8 hours of operation, check the performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder head, and feeling the cooling airflow. If there is little or no airflow, clean the cooling fins as described on the next page.

DANGER

Make sure to keep hands clear of exhaust pipe, muffler, and moving parts when checking airflow.

Check Airflow

with Hand

Cooling System Airflow

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