Husqvarna Rider ProFlex 21 AWD Operator's Manual page 68

Replacing the engine oil
The engine oil should be changed the first time after
8 hours running time. It should then be changed after
every 100 hours of running time.
WARNING!
Engine oil can be very hot if it is drained
directly after stopping the engine. Allow
the engine to cool somewhat first.
1. Open the engine cover.
2. Place a container underneath the engine's left oil
drain plug.
3. Remove the dipstick. Remove the drain plug from
the engine's left side.
4. Let the oil run out into the container.
IMPORTANT INFORMATION
Used engine oil is a health hazard and must not
be disposed of on the ground or in nature; it
should always be disposed of at a workshop or
appropriate disposal location.
Avoid skin contact; wash with soap and water in
case of spills.
5. Then replace the oil drain plug and tighten it.
6. Replace the oil filter if necessary. See "11. Oil
Filter, Change" on page 69.
7. Fill up to the "FULL" mark on the dipstick. Use
engine oil as set out above.
8. Run the engine warm, then check that there is no
leakage from the oil plug or oil filter.
9. Check the oil level, top up if necessary.
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LUBRICATION
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