Husqvarna ProFlex 21 Operator's Manual page 87

Action
50-Hour Service
1. Clean/change the air cleaner's pre-filter (Oil-foam element).
(shorter intervals in dusty operating conditions)
2. Clean the engine's cooling air intake and the transmission's air
intake.
3. Clean the fuel pump's air filter.
4. Clean the fuel pump's air filter.
5. Check/adjust the cutting height.
6. Check/adjust the parking brake.
7. Inspect the flame arrester/spark extinguisher (extra equipment).
This field is intended for keeping a journal
SERVICE JOURNAL
Date, mileage reading, stamp,
signature
Notes
85
English-