Exmark Metro 21 manual Recommended Maintenance Schedule

Maintenance

Note: Determine the left and right sides of the machine from the normal operating position.

Recommended Maintenance Schedule

Maintenance Service	Maintenance Procedure
Interval
	• Check the engine oil level. Refer to Checking the Engine Oil Level on page 15.
	• Check the stopping time of the blade brake. The blade must stop within
	3 seconds of releasing the control bar; if it does not, contact an Authorized
	Service Dealer for repair.
Each Use	• Remove grass clippings and dirt from under the housing. Refer to Cleaning
	under the Housing on page 15.
	• Clean the discharge tunnel and the discharge tunnel plug. Refer to Cleaning the
	Discharge Tunnel and Plug on page 16.
	• Inspect the air cleaner elements. Refer to Servicing the Air Cleaner on page 16.
5 Hours	• Check the blade and the engine mounting fasteners. Tighten loose fasteners.
	• Clean the air cleaner elements; clean them more frequently in dusty operating
25 Hours	conditions. Refer to Servicing the Air Cleaner on page 16.
	• Lubricate the pivot arms (self-propel model only). Refer to Lubricating the Pivot
	Arms on page 19.
	• Change the engine oil.1 Refer to Changing the Engine Oil on page 19.
	• Sharpen or replace the blade; maintain it more frequently if the edge dulls
	quickly in rough or in sandy conditions. Refer to Maintaining the Blade on
50 Hours	page 17.
	• Remove grass clippings and debris from under the belt cover. Refer to Cleaning
	under the Belt Cover on page 18.
	• Have an authorized engine servicing dealer check and adjust the flywheel brake
	pad.
75 Hours	• Adjust the self-propel drive system (self-propel model only). Refer to Adjusting
	the Self-propel Drive on page 19.
	• Inspect, clean, and adjust the spark plug; replace it if necessary. Refer to
	Servicing the Spark Plug on page 20.
	• Lubricate the gear case (self-propel model only). Refer to Lubricating the Gear
	Case on page 20.
100 Hours	• Adjust the blade brake cable. Refer to Adjusting the Blade Brake Cable on
	page 20.
	• Service the wheels. Refer to Servicing the Wheels on page 21.
	• Have an authorized engine servicing dealer check and adjust the idle speed,
	check and adjust the valve clearance, and clean the fuel tank and filter.
	• Replace the air cleaner elements; replace them more frequently in dusty
	operating conditions. Refer to Servicing the Air Cleaner on page 16.
250 Hours	• Replace the spark plug. Refer to Servicing the Spark Plug on page 20.
	• Have an authorized engine servicing dealer check for leaks in the fuel system
	and/or a deteriorating fuel hose. Replace parts if necessary.

1Change the engine oil after the first 5 operating hours.

Important

Refer to your engine owner's manual for additional maintenance procedures.

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