INSTALLATION

STINGRAY XR4 HYDROFOIL

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

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

TOOLS NEEDED:

• Phillips Head Screwdriver

• Drill and 1/4” Drill Bit

• 7/16” Socket and Ratchet

INSTALLATION HARDWARE:

• (2) Nylon Hex Nuts

• (2) 1/4-20 x 1” Stainless Steel Bolts

• (2) 1/4” Flat Stainless Steel Washers

INSTALLATION STEPS:

1. Make sure all installation hardware is included.

2. Slide the StingRay XR4 Hydrofoil onto the cavitation plate as far forward as possible with the colored graphics side facing upwards.

3. Using the Drill and 1/4” Drill Bit, drill through the cavitation plate using the two holes on the top side of the hydrofoil as a guide. Make sure to keep the drill perpendicular to the cavitation plate while drilling.

4. Place the 1/4-20 x 1” Stainless Steel Bolts through the holes on top of the XR4 Hydrofoil, and attach a Flat Washer and Nylon Nut to each Bolt from the underneath side of the hydrofoil. Using the Phillips Head Screwdriver and the 7/16” Socket and Ratchet, secure the Bolts by tightening the Nylon Lock Hex Nuts.

5. BEFORE OPERATING, check for propeller clearance by slowly turning the propeller by hand to make sure there is no interference between the StingRay XR4 Hydrofoil and the propeller.

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.