Yamaha 9.9 HP 4-Stroke Portable Outboard Motor
A 212 cc twin-cylinder portable in 15, 20 or 25 in shaft, with manual or electric start and tiller or remote control.
Get it to
Order in-stock items by Dec 12 for delivery before Christmas.
Owner photos
Available to order.Motor delivery depends on the order and destination. Call 888-978-1503 for a delivery date.
- Yamaha warranty
Claims and service through Yamaha - Four-stroke, 9.9 hp
212 cc two cylinders - Matched to your boat
We talk it through before you order - Family owned since 2012
Real people at 888-978-1503
- The Yamaha F9.9 in the shaft and options you select
Ask us to confirm the propeller, fuel tank and hose, and starting-battery needs for your configuration before you order. Boats are sold separately.
Warranty and service: This motor is covered by the manufacturer's warranty. Warranty claims and service are handled directly by Yamaha, and we are happy to point you to the right contact.
Returns: Motor sales are final. A 7% fee applies if an order paid with a financing plan is cancelled. Returns and refunds
Warranty and service: This motor is covered by the manufacturer's warranty. Warranty claims and service are handled directly by the motor manufacturer, and we're happy to point you to the right contact.
Returns: Motor sales are final. A 7% fee applies if an order paid with a financing plan is cancelled. Returns and Refunds
Yamaha 9.9 HP at POP Board Co
Load the tender. Pack light. Enjoy the quiet.
The Yamaha 9.9 HP four-stroke belongs on the right small boat, doing the kind of boating you enjoy: tender trips, fishing mornings and inflatable-boat outings with a setup matched to your hull and load. On a Rover, it is an all-around match for the 12 ft boats.
Specs at a glance
The Yamaha 9.9 HP in numbers.
Which Rover it fits
Where the Yamaha 9.9 HP sits on a Rover.
The 10 ft boats list a 10 HP maximum, so the 9.9 is a configuration to evaluate there. The 12 ft boats list 20 HP. All list a 15 in transom. None of these is an automatic fit approval: check your exact boat, motor weight, mounting and total load.
10 ft Rover Marine
10 ft Battle Cat or Battle Boat
Just under the 10 hp rating. Same rating on both 10 ft hulls.
$1,799$2,550
Save $751
- Max motor10 hp
- Transom15 in
- People4
- Capacity1,000 lb
12 ft Rover Marine
12 ft Battle Cat or Battle Boat
Below the 20 hp rating. Same rating on both 12 ft hulls.
$1,899$2,799
Save $900
- Max motor20 hp
- Transom15 in
- People4
- Capacity1,200 lb
Keep the boat you love, or build something new
Three checks before you repower.
01. Read the boat rating
Check the horsepower and motor-weight limits on your actual boat and model year. Electric motors still count against the rating, and a battery adds weight on the transom.
02. Match the shaft
Use the shaft length your transom calls for. Rover Marine boats have a 15 in transom and take a short shaft. Do not pick a longer shaft just to get electric start or power tilt.
03. Plan the complete rig
Confirm mounting, steering clearance, propeller, fuel or charging, and any starting-battery needs. Count passengers, motor, fuel or battery and gear in the boat's load.
Lake Forest, California
Why buy from POP.
Family owned, since 2012.
Matched to your boat.
Every motor page shows which Rover sizes sit within its rating, and we will talk through your boat before you order.
Short shaft for Rover.
Rover Marine boats have a 15 in transom, so they take a short-shaft motor.
Manufacturer warranty.
Warranty and service are handled by the motor maker. We will point you to the right contact.
Rover boats too.
We sell and support the Rover Marine Battle Cat and Battle Boat in the US.
Family owned since 2012.
POP Board Co started with paddle boards in 2012. Life is more fun in color.
Real people.
Boat and motor questions. Call 888-978-1503 or email info@popboardco.com.
Yamaha 9.9 HP questions.
Can I pair the Yamaha 9.9 HP with a Rover boat?
All six Rover boats list a 15 in transom. The 10 ft Battle Boat and Battle Cat list 10 hp; the 12 ft Battle Boat and Battle Cat list 20 hp. None of these is an automatic fit approval: check your exact boat, motor weight, mounting and total load.
Is 9.9 HP enough for a 12 ft Rover?
The 12 ft boats 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. Match the choice to your normal load and talk it through with us before you commit.
Can I choose a longer shaft to get electric start?
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 us about the alternatives.
Is the Yamaha F9.9 fuel injected?
No. The F9.9 in Yamaha's specifications uses a carburetor.
Are the boat, fuel tank, battery and rigging included?
No. The Rover boats are separate products. Ask us to confirm the package contents for the configuration you pick, including the propeller, fuel tank and hose, starting-battery needs and any rigging. Do not assume an accessory is included because it shows up in a lifestyle photo.
What speed should I expect?
Speed and planing depend on the hull, load, propeller, installation and conditions. There is no single speed promise for every boat and motor. Tell us your normal crew and use and we will talk it through.
Who handles warranty and service?
Yamaha. Warranty claims and service go directly through Yamaha, and we are happy to point you to the right contact. Use the engine's Primary ID from its serial label or warranty card to find the right Yamaha owner's manual.
Can I return a motor?
Motor sales are final. A 7% fee applies if an order paid with a financing plan is cancelled. Returns and refunds
Yamaha 9.9 HP specs.
- Rated output9.9 HP at 5,500 rpm
- Displacement212 cc
- Engine layoutTwo cylinders, SOHC
- Fuel inductionCarburetor, not EFI
- Full-throttle range5,000 to 6,000 rpm
- Gear ratio2.08:1
- Gear selectionForward, neutral, reverse
- IgnitionCDI Microcomputer
- Shaft15, 20 or 25 in
- Starting and tiltManual or electric start, manual or power tilt, tiller or remote, by configuration
- WarrantyYamaha manufacturer's warranty
What's included
- The Yamaha F9.9 in the configuration you select
Starting equipment, tilt hardware and engine weight vary by configuration. Confirm the exact model and supplied equipment before planning installation.
Yamaha 9.9 HP.
$3,100 USD
Room to run on the 12 ft Rovers.