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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)
  • 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.

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 1F08201KK
In stock online.

$1,999.00

Find in Store Add to My List
8hp 4-Stroke Outboard, 86lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326855 1F08211KK
In stock online.

$2,029.00

Find in Store Add to My List
8hp 4-Stroke Electric Start Outboard, 15" Shaft Length, 83lb., F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307577 1F08301FK
Ships from vendor

$2,449.00

Add to My List
8hp 4-Stroke Electric Start Outboard, 20" Shaft Length, 95lb., F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307585 1F08311KK
Ships from vendor

$2,439.00

Add to My List
9.9hp 4-Stroke Outboard, 84lb., 15" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326871 1F10201KK
In stock online.

$2,269.00

Find in Store Add to My List
9.9hp 4-Stroke Outboard, 86lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 5326905 1F10211KK
In stock online.

$2,289.00

Find in Store Add to My List
9.9hp Electric Start 4-Stroke Outboard, 84lb., 15" Shaft Length, F-N-R, 2.08:1 Gearing, External 3.2 Gallon Tank 10307593 1F10301KK
Ships when available.

$2,659.00

Find in Store Add to My List
9.9hp Electric Start 4-Stroke Outboard, 84lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, Multi-Function Tiller Shift, External 3.2 Gallon Tank 10307601 1F10311KK
Ships from vendor

$2,679.00

Add to My List
9.9hp Electric Start 4-Stroke Outboard, 84lb., 20" Shaft Length, F-N-R, 2.08:1 Gearing, Remote Shift, External 3.2 Gallon Tank 10307619 1F10312KK
Ships from vendor

$2,659.00

Add to My List
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 1F10451KK
In stock online.

$3,119.00

Find in Store Add to My List
9.9hp ProKicker Electric Start 4-Stroke Outboard, 108lb., 25" Shaft Length, F-N-R, 2.42:1 Gearing, External 3.2 Gallon Tank 8249344 1F10462BK
Ships from vendor

$3,199.00

Add to My List

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)
  • 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.

Specs

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REVIEW SNAPSHOT®

by PowerReviews
Mercury Marine8hp & 9.9hp 4-Stroke Outboards
 
3.9

(based on 8 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

71%

of respondents would recommend this to a friend.

Pros

  • Easy to use (4)

Cons

No Cons

Best Uses

  • Boating / sailing (4)
    • Reviewer Profile:
    • Casual/ recreational (4)
    • Was this a gift?:
    • No (5)

Reviewed by 8 customers

Displaying reviews 1-8

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5.0

Great Motor!

By Austen

from Vancouver wa

About Me Casual/ Recreational

Verified Buyer

Pros

  • Easy To Use

Cons

    Best Uses

    • Boating

    Comments about 8hp & 9.9hp 4-Stroke Outboards:

    I use this as a kicker motor, I like the shifting in the tiller handle. The only thing I do not like about this motor is the tilt options, it seems to me Mercury is overthinking it on the tilt, it took me awhile to figure it out.

    • Was this a gift?:
    • No
     
    4.0

    No Problems in ordering and delivery

    By Rick

    from Sheboygan, Wi

    About Me Advanced

    Verified Buyer

    Pros

    • Compact Design
    • Easy Storage

    Cons

      Best Uses

      • Boating

      Comments about 8hp & 9.9hp 4-Stroke Outboards:

      Mercury motors have good reputation-will use this on a 14 ft John Boat

      • Was this a gift?:
      • No

      (3 of 5 customers found this review helpful)

       
      5.0

      Great motor

      By FJ

      from Orlando

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy To Use

      Cons

        Best Uses

          Comments about 8hp & 9.9hp 4-Stroke Outboards:

          Great motor when warm starts with single pull. Cold start three pulls. Perfect for Jon boat and getting to fishing holes quickly.

          • Was this a gift?:
          • No

          (1 of 2 customers found this review helpful)

           
          5.0

          Great motor

          By FJ

          from Orlando

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Easy To Use

          Cons

            Best Uses

              Comments about 8hp & 9.9hp 4-Stroke Outboards:

              Great motor when warm starts with single pull. Cold start three pulls. Perfect for Jon boat and getting to fishing holes quickly.

              • Was this a gift?:
              • No

              (12 of 13 customers found this review helpful)

               
              1.0

              No Service

              By Coromell

              from Kemah Texas

              About Me Advanced

              Pros

                Cons

                • Unreliable

                Best Uses

                • Boating

                Comments about 8hp & 9.9hp 4-Stroke Outboards:

                This is the worst purchase I have ever made. Picked up on Thursday motor ran good. Friday hard to start. Saturday won't start at all, not even a sputter. Used it less than 2 hours and it has been at Mercury dealer for a week. When I called West Marine on Saturday they said "oh you will need to take it to a service dealer, we can't do anything". West Marine does not stand behind any of their products. If you need a motor go to a service providing dealer. This really has ruined a great customer, West Marine is now my last choice.

                • Was this a gift?:
                • No

                (15 of 16 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!)

                (25 of 27 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!

                (33 of 33 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.

                Displaying reviews 1-8

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