Adjusting Spray Distance on a Toro ProStream Rotor

Locate the Radius Reduction Screw

On top of the ProStream rotor, just above the nozzle, there's a small radius-reduction screw. It may be partially hidden under the rubber cover, but a slot in the cover allows tool access.

How to Adjust

1. Insert a small flat-blade screwdriver or ⅛″ Allen wrench into the slot.
2. Turn clockwise (to the right) to reduce throw distance.
3. Turn counter-clockwise to increase distance (up to the nozzle's maximum).

Tips

• Adjust while the head is running for immediate feedback.
• Don't force the screw; it bottoms out gently.
• If the screw is stripped or missing, replace the nozzle turret assembly.

This screw controls the diffuser pin that breaks up the stream, shortening the radius without changing the nozzle.