Take dependable, portable power to the lake, cabin, or hunting spot with the Yamaha 9.9hp outboard motor. This lightweight 9.9 HP outboard uses a compact two-cylinder, single-overhead-camshaft design and is built for small boats, fishing, cruising, and auxiliary propulsion.
A practical portable outboard for boaters who want flexible configuration choices and easy transport without giving up useful mid-powered performance.
Yamaha F9.9 at POP Board Co
The Yamaha 9.9 HP four-stroke belongs on the right small boat, doing the kind of boating you enjoy. Think tender trips, fishing mornings, and inflatable-boat outings with a setup matched to your hull and load.
Replacing a motor on a boat you love? Start with the fit checks below. Ready to replace the dinghy too? Meet the Rover Marine boats we carry.
Consider the F9.9 for a compatible tender that carries you, your passengers, and your gear between the boat and shore.
Yamaha's portable lineup is built for lightweight craft, including small fishing boats. Match the engine to your boat's rating and usual load.
Compare the motor and the boat together. Your hull, transom, controls, and storage plans all deserve a place in the decision.
Know your Yamaha
The F9.9 uses a 212 cc, twin-cylinder four-stroke engine with a single carburetor. Here are the core engine figures from Yamaha's 9.9 HP specifications.
Starting equipment, tilt hardware, and engine weight vary by configuration. Confirm the exact model and supplied equipment before planning installation.
Thinking beyond the engine?
If the boat is part of the upgrade, POP carries Rover Marine Battle Boats and Battle Cats in 10- and 12-foot sizes. The Battle Boat is the traditional single-hull dinghy, laid out for tender runs and easy maneuvering. The Battle Cat is the twin-pontoon catamaran, with a wider stance built for stability.
All four seat four people and list a 15-inch transom. The 10-foot models top out at 10 HP; the 12-foot models top out at 20 HP.
Traditional dinghy layout
The classic tender shape for ship-to-shore runs, harbor cruising, and family days. Two bench seats and a 1,000 lb capacity, with the deck layout to compare against the dinghy you use now.
The 9.9 HP sits at this model's listed horsepower ceiling. Confirm shaft length, motor weight, and mounting before pairing.
Open-bow catamaran layout
The twin-pontoon layout and open bow trade a little simplicity for stability: a wider, flatter deck for fishing, swim stops, and moving around with gear aboard.
The 9.9 HP sits at this model's listed horsepower ceiling. Confirm shaft length, motor weight, and mounting before pairing.
Traditional dinghy layout
More deck, more capacity, more ceiling. The 12-footer carries 1,200 lb and lists a 20 HP maximum, for crews that want room for gear and longer runs.
The 9.9 HP sits below this model's listed 20 HP ceiling. Confirm shaft length, motor weight, and mounting before pairing.
Open-bow catamaran layout
The largest Battle Cat pairs the twin-pontoon stance with a 1,200 lb capacity and a 20 HP ceiling, for the most deck space and the most headroom on power.
The 9.9 HP sits below this model's listed 20 HP ceiling. Confirm shaft length, motor weight, and mounting before pairing.
Boat photos illustrate Rover layouts, not a tested Yamaha F9.9 package. The linked product pages carry the specifications for each model. Boats and motors are sold separately unless a listing expressly includes both.
The 9.9 HP Yamaha is a great all-around match for our 12 ft boats, with plenty of power for family rides and fishing trips. See it on the Battle Boat 12 ft and Battle Cat 12 ft, from the launch ramp to full cruise.
Keep the boat you love, or build something new
A horsepower match is only the beginning. Use your exact boat's capacity plate and installation instructions to confirm the complete setup.
Check the horsepower and motor-weight limits for your actual boat and model year. The rating for a 10-foot Rover does not apply to every Rover model.
Use the shaft length specified for the transom. Do not choose a 20-inch shaft just to get electric start or power tilt on a boat that calls for a short shaft.
Confirm mounting, steering clearance, propeller, fuel system, and any starting-battery requirements. Include passengers, motor, fuel, battery, and gear in the boat's load calculation.
Not sure what to send? Start with your boat's make, model, year, and the specifications on its capacity plate. POP can help identify the questions to resolve before you order.
Family-run. California roots. Since 2012.
POP Board Co started with paddle boards and grew around the days people wanted to spend outside. Today the lineup also includes inflatable docks, chairs, Rover Marine boats, and motors.
Here is what owners say about the Rover boats above.
“Really nice, well made products that we enjoyed all throughout the summer and fall with family and friends.”
“The craftsmanship and design are top-notch, this boat truly stands out from anything else on the water.”
These are boat-owner reviews of Rover Marine boats, not Yamaha motor reviews.
Before the first launch
Use the documentation for your exact engine, and review the order details before installation.
Use the engine's Primary ID from its serial label or warranty card to find the correct Yamaha manual for mounting, break-in, operation, and maintenance.
Motor delivery depends on the order and destination. Review return eligibility before installing or using the engine, and obtain authorization before any return shipment.
Yamaha motor coverage is separate from POP board and dock coverage. Confirm the terms, registration, region, and intended use that apply to your purchase.
Yamaha 9.9 HP questions
The 10' Battle Boat and 10' Battle Cat both list a 10 HP maximum and a 15-inch transom, which makes the 9.9 a configuration to evaluate. The 12' Battle Boat and 12' Battle Cat list a 20 HP maximum with the same 15-inch transom, placing the 9.9 below the ceiling. None of these is an automatic fit approval: check your exact boat, motor weight, mounting, and total load.
The 12-foot models are rated up to 20 HP, so the 9.9 sits below the ceiling with headroom to spare. Real-world performance depends on crew, gear, propeller, and water conditions. Buyers who want the most speed the hull allows tend to look higher in the range; buyers who prefer a smaller, simpler setup evaluate the 9.9. Match the choice to your normal load and talk it through with POP before you commit.
Do not choose shaft length around a starting feature. Match the shaft to the boat's required installation first. If the starting option you want is not offered in the shaft your boat needs, ask POP about the available alternatives.
No. The F9.9 described in Yamaha's linked specifications uses a carburetor. Do not apply the EFI specifications of a different Yamaha horsepower model to this motor.
The Rover boats shown here are separate products. Ask POP to confirm the selected motor's package contents, including the propeller, fuel tank and hose, starting-battery requirements, and any rigging needed. Do not assume an accessory is included because it appears in a lifestyle image.
Speed and planing performance depend on the hull, load, propeller, installation, and conditions. There is no single speed promise for every boat-and-motor combination. Describe your normal crew and use when discussing a setup with POP.
Motor today. More possibilities tomorrow.
Choose the engine for your current hull, or compare a new boat and motor together. POP can help you work through the product questions before you commit.
