The Buckshot Racing #77 1-1/16" Marine Propeller Wrench is a lightweight, non-corrosive tool designed for removing and installing marine propeller nuts measuring 1-1/16 inches.
Made in the USA, it is an excellent tool for racers, fishermen, recreational boaters, and marine technicians who want a dedicated prop wrench that can stay onboard without the corrosion problems associated with conventional steel tools.
The wrench is resistant to fuel, sunlight, salt water, and common marine chemicals, making it especially useful for storage in boats, race trailers, and marine toolboxes. Available in Blue, Black, or Yellow, it is easy to identify when a propeller needs to be changed at the dock, ramp, or on the water.
1-1/16" Propeller Nut Fitment
The wrench is designed around the common 1-1/16" propeller nut size used on many outboard and sterndrive applications. Because propeller hardware can vary even within the same engine family, fitment should always be confirmed by measuring the actual propeller nut rather than relying only on horsepower or engine brand.
Compatible applications can include selected Mercury, Mercury Racing, Mariner, MerCruiser, Force, Yamaha, OMC, Johnson, Evinrude, Suzuki, and Tohatsu installations using a 1-1/16" propeller nut.
For Mercury performance applications, this wrench is particularly useful on compatible FleetMaster, SportMaster, and CLE lower units. It can also be useful around specialized racing gearcases where the installed propeller hardware uses the same nut size.
Built-In 9/16" Garboard Drain Plug Socket
The opposite end of the wrench includes a 9/16" socket for compatible square-head garboard and boat drain plugs.
This turns the tool into a practical two-in-one marine accessory. One wrench can handle common propeller service as well as many drain-plug installations, reducing the number of tools that need to remain onboard.
For racers and boaters who already carry spare propellers, prop nuts, washers and hub hardware, keeping the correct prop wrench in the same kit makes an emergency propeller change significantly easier.
Better Suited to Onboard Propeller Service
Using a manual prop wrench provides controlled leverage when removing a propeller nut and avoids the repeated shock loading associated with an impact gun.
A firm pull or controlled strike on the wrench can help loosen a properly serviced prop nut while maintaining better control over the propeller shaft and gearcase. Severely seized or heavily corroded nuts should be serviced with appropriate shop equipment rather than exceeding the intended use of an onboard propeller wrench.
This tool is best suited for emergency prop changes, routine maintenance, and normal propeller installation or removal, rather than continuous heavy-duty commercial shop use.
Useful for High-Performance Mercury Gearcases
Clearance between the propeller nut and anti-ventilation plate can be limited on some performance lower units. The compact wrench design works particularly well around many Mercury SportMaster, CLE, and FleetMaster applications using a 1-1/16" nut.
The wrench can also be shortened when necessary for a specialized installation where additional clearance is required. If modified, remove only the amount necessary because shortening the handle reduces leverage.
This can be useful on tightly packaged race applications involving Mercury Racing, Formula, S3000, SST, and other high-performance gearcases, provided the actual propeller nut is 1-1/16".
Corrosion Resistant and Easy to Store
A dedicated onboard prop wrench spends much of its life in an environment that is hard on conventional hand tools. Moisture, salt spray, and fuel exposure can quickly damage untreated metal tools.
The Buckshot Racing #77 wrench is designed specifically for marine use, so it will not develop the surface rust commonly found on steel wrenches stored in damp compartments.
Its lightweight construction also makes it easy to keep permanently onboard without adding unnecessary weight to the boat's tool kit.
Buckshot Racing #77 Tech Tip
When servicing a propeller, inspect the complete hardware stack rather than only the nut. Check the propeller shaft splines, thrust washer, hub components, propeller washer, locking hardware, and propeller nut for damage or excessive wear.
Mercury gearcases may use different locking systems, including tab washers or other retaining hardware, depending on the propeller and hub configuration.
The wrench is intended for removal and installation, but final tightening should follow the propeller or engine manufacturer's specified procedure. Where an exact torque value is required, use the proper calibrated torque wrench for final assembly.
Product Details
The Buckshot Racing #77 wrench fits compatible 1-1/16" propeller nuts and incorporates a 9/16" garboard drain plug socket on the opposite end. It is manufactured in the USA, offered in Blue, Black, or Yellow, and designed for corrosion-resistant marine service.
Common search and service references for similar 1-1/16" marine propeller wrench applications include Mercury / Quicksilver 91-859046Q4, T-H Marine PMW-1, Attwood, West Marine, 90065, 90066, 89001A, 11370-7 and 92562M. Verify the nut size and tool configuration before using these numbers as interchange references.
The Buckshot Racing #77 1-1/16" Propeller Wrench is a simple tool worth keeping aboard before it is needed—compact, corrosion-resistant, easy to use, and built for common marine propeller and drain-plug service.
For technical support, contact Mike Hill at +1-714-697-1716.