INSTALLATION

STINGRAY AIRO

WARNING: WITH ALL ENGINE INSTALLATIONS, ENSURE BOAT ENGINE IS OFF,

KILL SWITCH IS DISENGAGED, AND GEAR SHIFT IS IN NEUTRAL POSITION.

TOOLS NEEDED:

  • Electric Drill and 1/4” Drill Bit

  • Phillips Head Screwdriver

  • Pencil

INSTALLATION HARDWARE:

  • (4) Nylon Lock Hex Nuts

  • (4) 1/4-20 x 1” Stainless Steel Bolts

INSTALLATION STEPS:

1. Slide the left hydrofoil wing onto the left side of the cavitation plate. Slide it as far forward as possible. Using a pencil, mark the cavitation plate through each of the two holes in the hydrofoil’s wing. Remove the left hydrofoil wing, and repeat this step with the right hydrofoil wing on the right side of the cavitation plate.

2. Using an Electric Drill and 1/4” Drill Bit, drill perpendicularly through the cavitation plate using the four pencil marks on the top side of the cavitation plate as a drill guide. Make sure to keep the drill perpendicular to the cavitation plate while drilling.

3. After drilling, slide the left hydrofoil wing onto the left side of the cavitation plate so that the holes in the hydrofoil’s wings line up with the holes that were drilled in STEP #2.

4. Place a Nylon Hex Nut into each of the hex pockets that surround the holes on the top side of the hydrofoil wing. Make sure the smaller openings on each of the Nylon Hex Nuts are facing upwards and the larger openings on the Nylon Hex Nuts are facing downwards towards the cavitation plate.

5. Insert the ¼-20 x 1” Stainless Steel Bolts from the bottom of the cavitation plate so they travel up through the clearance holes on the bottom side of the hydrofoil wing, into the hole in the cavitation plate drilled in STEP #2, and into the Nylon Hex Nuts.

PRO TIP: Place a finger on top of the Nylon Hex Nuts to keep them in place while inserting the Stainless Steel Bolts from the bottom side.

5. Tighten the Stainless Steel Bolts with a Phillips Head Screwdriver until the hydrofoil wing is securely installed.

6. Repeat STEPS #3-5 using the right hydrofoil wing.

7. Check for propeller clearance by slowly turning the propeller by hand making sure that there is no interference between the StingRay AIRO Hydrofoil and the propeller before operating!

NOTICE: This product should make an immediate performance improvement in your boat/motor…if for ANY REASON it does not, then remove this product and utilize the Customer Contact Form on our website (www.StingRayHydrofoil.com) for assistance.

Any surface “flow marks” around holes that appear to be cracks are not cracks, but they are a normal part of the molding process and do not affect the part strength or performance.