Husqvarna EZ4220 Operator's Manual page 57

LUBRICATION
Checking the Oil Level
Check the oil level in the engine when the machine is
standing level and the engine is stopped.
Remove the dipstick, wipe it clean, and then replace it.
The dipstick should be screwed into place.
Take the dipstick out again and read the oil level.
8011-500
Remove the dipstick
The oil level should lie between the markings on the
dipstick. If the level is approaching the "ADD" mark, fill
the oil to the "FULL" mark on the dipstick.
Never fill to above the "FULL" mark.
The oil is filled through the hole for the dipstick.
8009-159
The dipstick markings
API class SF, SG, SH, SJ or higher must be used.
Syntetic oil SAE 5W-30 or 10W-30 is recommended at
all temperatures. Mineral oil SAE 5W-30, 10W-30 can
be used between -18 °C/0 °F and +5 °C/40 °F. At
temperature above +5 °C/40 °F single grade SAE 30
must be used.
The engine holds 0.88 qt (1.0 liters) of oil excluding
the filter, including filter 2 qt
(1.9 liters).
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English