HTC Z4220BF, Z4824, Z5426, Z4619, Z4219  = Described in this manual = Not described in this manual

maintenance

	Daily		Weekly	At	Maintenance interval
				least	in hours
				once
Maintenance	Before	After		each
				year	25	50	100	300
Check/adjust throttle and choke cables							
Check the condition of belts, belt pulleys, etc.							
Change the engine oil 1)						
Replace the engine oil filter							
Clean/replace the spark plugs							
Replace the fuel filter							
Replace the air filter (paper filter) 2)							
Check the caster wheels (every 200 hours)							
Clean the cooling fins 2)				u			u
Replace the air cleaner’s pre-filter 2) (foam)
								
Check/adjust the mower deck								
Check the engine valve clearance 3)				u				u
Perform the 300-hour service 3)				u				u
Lubricate according to Lubrication Schedule								

1)First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours. 2) In dusty conditions, cleaning and replacement are required more often. 3) Performed by authorized service workshop.

= Described in this manual

u = Not described in this manual

WARNING!

Before performing any service or adjustment checklist:

• Engage the parking brake.

•Place the Blade-switch in the disengaged position.

•Turn the ignition switch to “OFF” position and remove the key.

•Make sure the blades and all moving parts have completely stopped.

•Disconnect the spark plug wire from all spark plugs and place the wire where it cannot come in contact with the plug.

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