1. Personal Watercraft Parts Products
  2. sku: 11610535334848793
  3. YAMAHA F9.9SK

YAMAHA F9.9SK Piston Rings Set Cylinder Outboard Motor

fits make: Yamaha. year: 1985–1989.

F9.9sk Yamaha 1985-1989 Piston And Rings Set 4 Stroke 2 Cylinder Outboard Motor

( Manufacturer Part Number: F9.9SK ), ( Part Type: Ring Piston Cylinder Motor ), ( Warranty: 1 Year )

Review YAMAHA Piston And Rings Set Stroke Cylinder Outboard Motor fits F9 1985–1989

Yamaha F9.9SK 1985-1989 Piston Rings Set for Cylinder Outboard Motor

Description:

This Yamaha F9.9SK Piston Rings Set is specifically designed for the cylinder of the Yamaha F9.9SK outboard motor models produced between 1985 and 1989. These piston rings are essential components for maintaining the optimal performance and longevity of your outboard motor.

The set includes four piston rings: two compression rings, one oil control ring, and one skirt or groove-type ring. The compression rings are responsible for sealing the combustion chamber and transmitting the engine force to the crankshaft. The oil control ring prevents oil from leaking past the piston and ensures proper lubrication. The skirt or groove-type ring provides additional sealing at the bottom of the piston.

The piston rings are manufactured from high-quality materials to ensure a precise fit and excellent durability. They are designed to withstand the high temperatures and pressures generated during engine operation. These rings are also coated with a special material to reduce friction and wear, ensuring a smooth engine operation and minimal power loss.

Installing these piston rings requires some level of mechanical expertise and the proper installation tools. It is highly recommended to consult your outboard motor's user manual or consult with a professional mechanic for proper installation procedures.

By using this genuine Yamaha piston rings set, you can ensure the continued excellent performance of your F9.9SK outboard motor and prevent potential engine damage caused by worn or improperly functioning piston rings.

Buying a piston rings set for a Yamaha F9.9SK outboard motor produced between 1985 and 1989 involves considering several factors to help you make an informed decision. Here are some potential pros and cons.

Pros:

1. Wear and Tear: Over time, piston rings can wear out, leading to engine issues such as poor compression, oil leaks, and decreased performance. Replacing the piston rings can help restore the engine to its optimal condition.

2. Improved Performance: New piston rings can seal the cylinders more effectively, allowing for better compression and increased engine performance.

3. Cost-Effective: In some cases, replacing the piston rings may be a more cost-effective solution compared to other major engine repairs.

Cons:

1. Labor Costs: Installing the new piston rings may require professional assistance, resulting in additional labor costs.

2. Availability: Finding a piston rings set that is compatible with your specific Yamaha F9.9SK engine model and year may be challenging, especially if the engine is no longer in production.

3. Risk of Damage: Removing the cylinder head to replace the piston rings involves disassembling the engine, increasing the risk of damaging other components if not done properly.

Ending Conclusion:

Weighing the pros and cons, replacing the piston rings on a Yamaha F9.9SK outboard motor can help improve engine performance, prevent potential issues, and save costs compared to other major engine repairs. However, it's essential to consider the availability of compatible parts, labor costs, and the risk of damaging other engine components during the installation process.

Recommendation:

If you decide to proceed with replacing the piston rings, ensure you purchase a compatible set from a reputable supplier. Consider seeking professional assistance to minimize the risk of damaging other engine components during the installation process. Regular engine maintenance can help prevent the need for major repairs, making it a worthwhile investment for your outboard motor.

Details:

Taken from a motor that lost oil pressure. The piston and rod have no Knocks or scratches had all the hardware to install.

part #: f99sk prices

  • $50.00-$225.00

specifications perwatercraft:

  • for makes: Yamaha
  • for years: 1985-1989
  • mpn: F9.9sk
  • part type: Ring Piston Cylinder Motor
  • warranty: 1 Year

offer perwatercraft:

  • sold: 0
  • best offers: True
  • quantity: 1
  • options: Ship-to-home
  • started: April 16, 2026
  • availability: In Stock

shipping perwatercraft:

  • class: Standard
  • service: USPS Ground Advantage
  • carrier: USPS
  • transit: 5-11 Days
  • type: Calculated
  • cost: $0.00

general perwatercraft:

  • condition: Used
  • Parts Accessories > Personal Watercraft Parts > Other Parts

seller perwatercraft:

  • # reviews: 10
  • rating: 100.0%
  • city: Maquoketa, Iowa

returns perwatercraft:

  • policy: No Returns

payments perwatercraft:

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  • credit card: Diners-club
for makes: yamaha, for years: 1985-1989, part type: ring piston cylinder motor, warranty: 1 year,
category: watercraft parts > parts, sku: 11610535334848793,

Yamaha F9.9SK Is Similar To:

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3 offers $50.00–$225.00 USD
  • Offer #1: $50.00 price + $0.00 shipping estimate = $50.00* total. The piston and rod have no Knicks or scratches and had all the hardware to install. Taken from a motor that lost oil pressure.FREE SHIPPING
  • Offer #2: $225.00 price + $11.03 shipping estimate = $236.03* total. Has all of the hardware including valve cover. Came off a motor that had lost oil pressure everything appears to be in working condition and moves as should.+$11.03 shipping
  • Offer #3: $50.00 price + $7.90 shipping estimate = $57.90* total. Has the bolts to mount it Was taken off motor that was running but had water in cylinders.+$7.90 shipping

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