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MERCURY MARINE 8hp & 9.9hp 4-Stroke Outboards

Mercury Marine’s 4-stroke technology consumes 40% less fuel than 2-stroke models for extraordinary value and savings

Engines surpass California Air Resources Board (CARB) 3-Star Rating, making them some of the cleanest running on the market-with 91% less emissions than traditional 2-stroke outboards!

The inherent 4-stroke characteristics of ultra-quiet, smoke-free operation, plus smooth idling and running make these engines a natural choice whether you’re trolling for fish or out just for fun. Clean running 4-stroke engines from 2.5 to 20hp have a CARB three-star, ultra-low emissions rating. The decompression system and electronic CD ignition design ensure an easy, reliable start. One-stage over-rev protection and low oil pressure warning system provide extra peace of mind. Exclusive multifunction tiller handle on the 8hp and 9.9hp models features shift, steering, throttle, throttle friction, and stop controls for convenient one-hand operation. Available in manual-tilt, gas-assist and power-trim. All models are sold with a propeller.

  • Engine Type: 4-stroke
  • Features: 4-stroke technology-quiet, environmentally friendly, 40% more fuel efficient than comparable 2-stroke engines, smooth running/exceptional idling
  • Exhaust: Thru-hub
  • Start: Manual with decompression system, or Electronic CD Ignition
  • Steering Type: Tiller (2.5-6hp), tiller or remote (8 and higher)
  • Warranty: Five years
  • For U.S. shipment ONLY

8hp & 9.9hp 4-Stroke Outboards

  • The multifunction tiller handle design provides one-hand operation of shifting, stopping, throttle control, tilting and steering
  • A standard manual recoil, even on electricstart models, provides added safety in the event of a drained battery
  • Easy starting and fast idle warm-up are provided by manual choke and primer
  • Only 7 pounds heavier than a comparable two-stroke, it's one of the lightest fourstrokes in its class
  • Gearing: F-N-R, 2.08:1
  • Trim Positions: 5 with auto ratchet + shallow-water drive
  • Tank Type: External
  • Tank Capacity: 3.2gal.

Note: These Mercury outboards have 4-stroke engines and, like virtually all 4-stroke engines, depend on oil in their crankcases for lubrication. To prevent the oil from leaking during transport, the engines are not shipped with oil in their crankcases. You must put the correct amount and grade of oil in the crankcase prior to the first use or you will cause extensive damage to your engine, which is not covered by your engine’s warranty. Please read the owner’s manual for more information.

For U.S. shipment ONLY.

Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
8hp 4-Stroke Outboard, 84lb., 15" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326699 1F08201FK
In stock online.

$1,999.00

8hp 4-Stroke Outboard, 86lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326855 1F08211FK
In stock online.

$2,025.00

8hp 4-Stroke Electric Start Outboard, 15" Shaft Length, 83lb., F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307577 1F08301FK
Delivery within 2 - 3 weeks.

$2,699.99

8hp 4-Stroke Electric Start Outboard, 20" Shaft Length, 95lb., F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307585 1F08311FK
Delivery within 2 - 3 weeks.

$2,699.99

9.9hp 4-Stroke Outboard, 84lb., 15" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326871 1F10201FK
In stock online.

$2,239.00

9.9hp 4-Stroke Outboard, 86lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326905 1F10211FK
In stock online.

$2,259.00

9.9hp ProKicker Electric Start 4-Stroke Outboard, 84lb., 15" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307593 1F10301FK
Delivery within 2 - 3 weeks.

$2,939.99

9.9hp ProKicker Electric Start 4-Stroke Outboard, 84lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307601 1F10311FK
Delivery within 2 - 3 weeks.

$2,959.99

9.9hp ProKicker Electric Start 4-Stroke Outboard, 108lb., 20" Shaft Length, F-N-R, 2.42:1 Gearing, Integral 3.2 Gallon Tank 8249328 1F10451HK
Delivery within 2 - 3 weeks.

$3,129.00

9.9hp Electric Start 4-Stroke Outboard, 108lb., 25" Shaft Length, F-N-R, 2.42:1 Gearing, External 3.2 Gallon Tank 8249344 1F10462EK
Delivery within 2 - 3 weeks.

$3,199.99

Product Description

Mercury Marine’s 4-stroke technology consumes 40% less fuel than 2-stroke models for extraordinary value and savings

Engines surpass California Air Resources Board (CARB) 3-Star Rating, making them some of the cleanest running on the market-with 91% less emissions than traditional 2-stroke outboards!

The inherent 4-stroke characteristics of ultra-quiet, smoke-free operation, plus smooth idling and running make these engines a natural choice whether you’re trolling for fish or out just for fun. Clean running 4-stroke engines from 2.5 to 20hp have a CARB three-star, ultra-low emissions rating. The decompression system and electronic CD ignition design ensure an easy, reliable start. One-stage over-rev protection and low oil pressure warning system provide extra peace of mind. Exclusive multifunction tiller handle on the 8hp and 9.9hp models features shift, steering, throttle, throttle friction, and stop controls for convenient one-hand operation. Available in manual-tilt, gas-assist and power-trim. All models are sold with a propeller.

  • Engine Type: 4-stroke
  • Features: 4-stroke technology-quiet, environmentally friendly, 40% more fuel efficient than comparable 2-stroke engines, smooth running/exceptional idling
  • Exhaust: Thru-hub
  • Start: Manual with decompression system, or Electronic CD Ignition
  • Steering Type: Tiller (2.5-6hp), tiller or remote (8 and higher)
  • Warranty: Five years
  • For U.S. shipment ONLY

8hp & 9.9hp 4-Stroke Outboards

  • The multifunction tiller handle design provides one-hand operation of shifting, stopping, throttle control, tilting and steering
  • A standard manual recoil, even on electricstart models, provides added safety in the event of a drained battery
  • Easy starting and fast idle warm-up are provided by manual choke and primer
  • Only 7 pounds heavier than a comparable two-stroke, it's one of the lightest fourstrokes in its class
  • Gearing: F-N-R, 2.08:1
  • Trim Positions: 5 with auto ratchet + shallow-water drive
  • Tank Type: External
  • Tank Capacity: 3.2gal.

Note: These Mercury outboards have 4-stroke engines and, like virtually all 4-stroke engines, depend on oil in their crankcases for lubrication. To prevent the oil from leaking during transport, the engines are not shipped with oil in their crankcases. You must put the correct amount and grade of oil in the crankcase prior to the first use or you will cause extensive damage to your engine, which is not covered by your engine’s warranty. Please read the owner’s manual for more information.

For U.S. shipment ONLY.

West Advisor

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REVIEW SNAPSHOT®

by PowerReviews
Mercury Marine8hp & 9.9hp 4 Stroke Outboards
 
3.7

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (0)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

67%

of respondents would recommend this to a friend.

Reviewed by 3 customers

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(4 of 5 customers found this review helpful)

 
3.0

Not Bad, But Has Bugs

By Burg's Small Engine

from Southwest Florida

About Me Professional

Verified Reviewer

Pros

  • Compact Design
  • Efficient

Cons

  • Awkward Shiftthrottle
  • Gets Noisy As It Ages

Best Uses

  • Dinghy

Comments about 8hp & 9.9hp 4 Stroke Outboards:

Purchased this motor for use in our marine business. We needed something compact, reliable and fuel efficient to power one of our mobile repair boats- this small vessel puts on alot of miles and often bangs through rough seas. It needs to be there for our customers- we can't be regularly breaking down ourselves and not showing up.
This small Merc is powerful enough and, being so new, is reliable enough...so far. My work partner, used to a separate shift control, finds the Merc's throttle-shifter combo to be awkward. It's difficult to find neutral gear at lower speeds. A duplicate Merc 8 that a friend owns is experiencing similar difficulties and at one point got stuck in reverse gear.
Our Merc 8 is almost three months old and has been nice to use overall, but a factory defect is causing problems; fuel is getting into the oil. As a marine mechanic, I know the cause, but to honor the warranty, I have to find help from the dealer.
Not only do I rely on this motor to earn a living, but it's how I safely get home on a daily basis. (I live along an island chain & have to travel by boat)

Service and delivery comments:

The store had one in stock. Friendly, helpful service, as usual with our local West Marine stores. I'll be seeking help from cust. service soon, but am afraid of how long it will take & will the motor have to be shipped somewhere for who knows how long (when I really need the Merc. to run my business and get home every day!)

(20 of 21 customers found this review helpful)

 
4.0

The Legend Continues

By Lawrence Du Lac

from New York, NY

About Me Casual/ Recreational

Verified Reviewer

Pros

  • Durable
  • Easy Setup
  • Easy Storage
  • Easy To Use

Cons

  • Heavy

Best Uses

  • Boating

Comments about 8hp & 9.9hp 4 Stroke Outboards:

Use it to ferry people and supplies to and from my boat on a mooring. Bought it for the 2011 Boating Season and have found it completely reliable and rugged. Snagged the prop twice on garbage and a stray line- with no damage to the unit. Have more than enough power to deal with a max loaded boat. Whisper quiet!

(27 of 27 customers found this review helpful)

 
4.0

more thrust than honda or yamaha

By Fast Tri

from Key West Fl

About Me Professional

Pros

  • Unreal thrust

Cons

  • Maybe a little loud

Best Uses

  • Sailboat kicker

Comments about 8hp & 9.9hp 4 Stroke Outboards:

I use this on my corsair 31 trimaran. I get 6.5 knots at just over half throttle and only .25-.5 knots more at full throttle. My boat is light and this motor has so much thrust that half throttle is all I need. It is also very handy having forward and reverse in tiller handle no turning around when heading into slip. The only down side is it may be a touch louder than the honda 9.9 high thrust I had before, however I cannot swear to that.

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