What Is A Yamaha 9.9HP Outboard 2 Stroke?
Yamaha 9.9 HP Outboard 2 Stroke is a small-horsepower boat motor engine. This kind of 9.9hp 2-stroke outboard engine motor is characterized by light weight and simple structure. It is very suitable for entertainment. A 2-stroke outboard motor 9.9hp is also the first choice for most fishing enthusiasts.
Key Specification Table
| Product Name | Yamaha 9.9 HP Outboard 2 Stroke |
| Product Type | 2- Stroke Outboard Motor |
| Rated Power | 9.9HP |
| Engine Type | In-line 2 |
| Displacement | 246 |
|
Bore x Stroke |
56.0 x 50.0 |
|
Fuel Induction System |
Carburetor |
|
Max. Prop Shaft Output |
7.3 (9.9) @5000 |
| Engine Transom Height | S: 440 & L: 567 |
| Dry Weight | 36-38KG |
| Starting System | Manual Starter |
| Control | Tiller Handle |
| Tilt System | Manual Tilt |
| Lubrication System | Pre-mixed Fuel and Oil |
| Fuel Type | Gasoline |
| Product Quality | 100% Tested |
|
Delivery |
Express & Air Freight & Sea Freight |
| Product Warranty | One Year 12 Months |
| We Support | OEM & ODM Services |
Product Component
● Start Handle:
For starting an outboard motor;
● Silencer:
Reduce forward noise;
● Throttle Operation:
For acceleration/ deceleration;
● Transom Clamping Device:
Securing the outboard motor to the transom;
● Suspension Overall Adjustment Pin:
Used to adjust the boat's sailing attitude;
● Anti-Vortex Plate:
Reduce the vortex generated by the boutboard motor operation;
● Propeller Assembly:
Providing propulsion power to the ship;
Core Advantages
Lightweight And Efficient, Designed For Flexible Sailing
● Small Body, Big Power:
Due to the high ignition frequency of the two-stroke outboard motor, the 9.9 hp outboard motor releases enough torque at startup to quickly overcome water resistance and allow a 3-meter inflatable boat or small aluminum boat to enter a brisk gliding state. Compared to a 9.9 hp four-stroke outboard motor, it is lighter and more flexible.
● Very Portable:
The compact design allows for easy handling and mounting by a single person. There's no need to worry about oil leakage or backflow, or about tipping or placing it on its side. Because it's easy to carry and use, small HP two-stroke outboard motors remain popular.
● High Reliability:
Equipped with an efficient carburetor system and reinforced circulating cooling channels, it performs reliably even in harsh waters with high sand content or extremely high salinity, or in high-salinity, humid environments. Power output remains stable. Even if minor problems occur, they can be quickly resolved.
● Excellent Handling:
Two control modes are available: front and rear control. The control handle integrates gear shifting, throttle, and emergency stop functions. A light twist of the throttle provides quick power output. Even one-handed control is convenient and comfortable.
If you want a lightweight, single-person controllable two-stroke outboard motor, then the 9.9 hp two-stroke boat motor is your best choice. If you are a boat owner who values portability, efficiency, and reliability, choosing the 9.9F Yamaha outboard motor is definitely the right decision.
Applicable Vessel Types
The 9.9F short-shaft outboard motor is the most popular, and the ideal mounting position is on the transom at a height of approximately 38 centimeters. When installing, it's best to ensure the propeller's cavitation plate is level with or slightly below the bottom of the boat for better propulsion efficiency.
● 3.3-Meter To 3.8-Meter Small Inflatable Boats:
The 9.9F Yamaha outboard engine ensures the inflatable boat maintains a stable waterline when stationary, and at the moment of acceleration, utilizes the high torque burst characteristic of a two-stroke engine to easily propel the boat into a smooth planing state. Its powerful performance and lightweight design make it a favorite among small inflatable boat owners.
● 3.5-Meter To 4.2-Meter Lightweight Aluminum Pointed-Bow Boats:
The aluminum hull is rigid and has a small wind resistance area. Combined with the engine's instant response capabilities, it allows for extremely precise control. Whether navigating through shallow waterways with numerous obstacles or performing precise docking in the middle of a lake, the 9.9 hp power reserve ensures excellent cruising speed with one or two people on board. It not only saves space in the boat but, due to its extremely low failure rate, has become the most trusted marine engine for anglers who frequently need to move between remote waterways.
● Small Fishing Boats:
The 9.9F Yamaha boat motor is also suitable for small fishing boats and portable workboats. Whether for coastal operations, lake cruising, or daily transportation, this engine provides reliable and continuous propulsion while maintaining fuel efficiency, meeting the practical needs of frequent use.
Other Horsepower

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Packaging And Delivery
| Packaging Detail | Standard Brand Packing & Neutral Packing & Customized Packing |
| Main Shipping Port | Shanghai Port & Ningbo Zhoushan Port & Shenzhen Port & Qingdao Port & Guangzhou Port |

Lead Time
|
Quantity (Units) |
1 - 1000 |
> 1000 |
|
Lead time (Days) |
25 |
To Be Negotiated |
About KLS Company
KLS Company is a supplier specializing in engine-related products. Our main products include outboard motors, outboard motor accessories, boats, generators, etc. Thanks to high quality, excellent service, and a good reputation, our products enjoy an extremely high market share. For twenty years, we have been consistently committed to producing high-quality products. Our products and services have always been at the forefront. They have been exported to over 80 countries.

Contact Us Now
If you want to know more about our Yamaha 9.9 HP Outboard 2 Stroke, don't hesitate to get in touch with us at email: Inquiry@klsautoparts.com.
FAQ
Q: Do Two-Stroke Outboard Motors Need Oil? What's The Ratio?
A: Two-stroke outboard motors don't have a separate oil pan; oil must be mixed. The ratio is 50:1, meaning 50 liters of gasoline to 1 liter of oil.
Q: Why Does Black Oil Drip From The Exhaust Port Of A Two-Stroke Outboard Engine?
A: This is normal. Unburned oil mixed with water droplets will appear as black oil. If there's a lot of black oil, check if the oil level is too high or if the spark plugs are worn.
Q: Can A Two-Stroke Boat Motor Be Laid Horizontally Anywhere?
A: Yes, a two-stroke boat motor can be laid horizontally. There's no internal oil tank, so there's no need to worry about oil backflow; it can be laid horizontally in any position.
Q: How Often Should The Spark Plugs On A Two-Stroke Boat Engine Be Changed?
A: It's recommended to check or replace them every 100 hours or annually.
Q: Which Is Heavier, A 9.9-Horsepower 2-Stroke or A 4-Stroke Outboard Motor?
A: For the same horsepower, a four-stroke outboard engine is heavier, while a 2 stroke outboard motor is lighter.
