Husqvarna EZ4220 Operator's Manual page 37

Maintenance
Check/adjust throttle and choke cables
Check the condition of belts, belt pulleys, etc.
Change the engine oil
Replace the engine oil filter
Clean/replace the spark plugs
Replace the fuel filter
Replace the air filter (paper filter)
Check the caster wheels (every 200 hours)
Clean the cooling fins 2)
Replace the air cleaner's pre-filter
Check/adjust the mower deck
Check the engine valve clearance
Perform the 300-hour service
Lubricate according to Lubrication Schedule
Check transaxle oil at reservoir
Change transaxle oil & filter (200 hours)
1)
First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
conditions, cleaning and replacement are required more often.
authorized service workshop.
l
= Described in this manual
m
= 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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MAINTENANCE
1)
2)
2)
(foam)
4)
4)
Daily
maintenance
Page Before After
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3)
For daily use, the machine should be lubricated twice weekly.
Weekly At Maintenance interval
mainte- least in hours
nance once
each
year 25 50
l
l l
l
l
l
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m
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m
l l l
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100 300
l
l
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m
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m
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l l
2)
In dusty
4)
Performed by