Honda F501 Owner's Manual page 17

6. Engine oil
Running the engine with insufficient oil can cause serious engine
damage.
1. Place the tiller on the level surface and hold the tiller level by placing
wooden blocks under the front wheel (if equipped) and drag bar as
shown.
2. Remove the oil filler cap and wipe the dipstick clean.
3. Insert the dipstick into the oil filler neck, but do not screw it in.
OIL FILLER CAP/DIPSTICK
14
OIL FILLER NECK
UPPER LIMIT