MERCURY 71660 Shaft Rod 4HP 4.5HP 7.5HP 9.8HP

( Part Type: 5hp Shaft Rod ), ( Warranty: 30 Days ), ( Manufacturer Part Number: 71660 ), ( Country Of Origin: United States )

Review MERCURY 4hp 4.5hp 7.5hp 9.8hp Shift Shaft Rod Oem Nla fits 1974–1986

The Mercury 71660 outboard motor series was manufactured by Mercury Marine between the years 1974 and 1986. These engines came in four different horsepower options: 4hp, 4.5hp, 7.5hp, and 9.8hp. The 71660 models were known for their durability, reliability, and efficient performance.

The 4hp and 4.5hp engines were ideal for small inflatable boats, dinghies, and other lightweight watercraft. They weighed approximately 55-60 lbs and featured a single-cylinder, two-stroke design with a displacement of 49.5 cubic inches. The engine's bore and stroke measurements were 2.6 inches by 3.1 inches, respectively. The 4hp model produced a peak horsepower of 4.1 at 5,600 RPM, while the 4.5hp model generated 4.5 horsepower at 5,800 RPM.

The 7.5hp and 9.8hp engines were more powerful options designed for larger boats and heavier loads. The 7.5hp engine weighed around 115 lbs, while the 9.8hp engine weighed approximately 125 lbs. These engines boasted a twin-cylinder, two-stroke design with a displacement of 133 cubic inches. The bore and stroke measurements for these engines were 2.6 inches by 3.1 inches for the first cylinder and 2.6 inches by 3.4 inches for the second cylinder. The 7.5hp engine produced 7.5 horsepower at 5,600 RPM, while the 9.8hp model generated 9.8 horsepower at 5,800 RPM.

All Mercury 71660 engines featured a manual recoil starting system and a standard gear ratio of 2.11:1. They were also equipped with a water-cooled, single-unit design that ensured efficient heat dissipation and prolonged engine life. The engines came with a standard 10-inch shaft length, making them suitable for a wide range of transom heights.

These Mercury 71660 engines were renowned for their robustness and dependability, making them a popular choice among boaters during that era. With their impressive power output and versatile applications, these engines provided excellent performance and reliability for various watercraft and boating activities.

Mercury 71660 outboard motors are known for their durability and reliability, especially for boats used in freshwater environments. These motors were produced between 1974 and 1986 and come in various horsepower options: 4hp, 4.5hp, 7.5hp, and 9.8hp. Here are some potential pros and cons of buying a used Mercury 71660 outboard motor.

1. Durability and Reliability: Mercury outboard motors have a reputation for being long-lasting and dependable. The 71660 series was no exception.

2. Wide Range of Horsepower Options: With options ranging from 4hp to 9.8hp, there is a Mercury 71660 motor suitable for a wide range of small boats.

3. Affordability: Compared to newer outboard motors, used Mercury 71660 motors can be more affordable.

1. Age and Wear: These motors are older, which means they may have worn parts that need to be replaced. Regular maintenance and inspections are necessary to keep them running smoothly.

2. Fuel Efficiency: Older outboard motors are generally less fuel-efficient than newer models.

3. Availability of Spare Parts: Some parts for older Mercury outboard motors may be harder to find and more expensive.

Buying a used Mercury 71660 outboard motor can be a good choice for those on a budget or for those who want a reliable and durable motor for their small freshwater boat. However, it's important to keep in mind that these motors are older and may require more maintenance and the availability of some spare parts could be a challenge. Prospective buyers should thoroughly inspect the motor before purchasing and budget for potential repairs or parts replacements.

For those considering purchasing a used Mercury 71660 outboard motor, it's recommended to work with a trusted marine dealer or mechanic. They can help assess the motor's condition, provide an estimate for any necessary repairs, and offer advice on the best model and horsepower for the buyer's specific needs. Additionally, potential buyers should research the market to ensure they are getting a fair price for the motor.

Details:

Condition: Used OEM. Genuine OEM Mercury linkage components remain increasingly difficult to source due widespread discontinuation of vintage small-horsepower outboard drive train parts. Material: Hardened Steel. Production Range: 1974-1986.

This OEM component is in good usable condition and should be inspected against your original linkage configuration prior to installation. Commonly used on short-shaft outboard configurations. Please verify fitment and linkage configuration prior to purchase. Mercury utilized multiple shift shaft revisions depending on production year, length , and lower unit assembly version.

Application: Outboard Shift Shaft / Rod Assembly. Brand: Genuine Mercury Marine OEM. Vintage Mercury outboard shift linkage systems often varied depending on shaft length , serial range, and lower unit revision. Horsepower Compatibility: 4HP / 4.5HP 7.5HP 9.8HP.

This is an original genuine Mercury Marine outboard shift shaft / rod assembly Part Number 71660 for select 4HP, 4.5HP, 7.5HP, and 9.8HP motor applications produced from 1974-1986. Manufactured to original Mercury Marine specifications, this hardened steel shift shaft is engineered maintain accurate forward-neutral-reverse engagement and dependable operation under demanding marine operating conditions. Function: Transfers shift movement through lower unit drive train linkage assemblies.

part #: 71660 prices

• $17.55-$65.00

specifications vesselveep:

• for makes: Mercury
• for years: 1974-1986
• part type: 5hp Shaft Rod
• warranty: 30 Days
• manufacturer part number: 71660
• country of origin: United States

seller vesselveep:

• rating: 99.8%
• # reviews: 13022
• city: Wetmore, Michigan

general vesselveep:

• Parts Accessories > Boat Parts > Other
• condition: Used

payments vesselveep:

• other
• wallet: Apple-pay
• cash
• credit card: Visa

shipping vesselveep:

• type: Fixed
• class: Expedited
• transit: 5-10 Days
• service: Expedited
• cost: $0.00

offer vesselveep:

• best offers: True
• quantity: 1
• started: May 22, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

returns vesselveep:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

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