Coleman 15HP Short Tiller – 4S (M15773)

£995.00

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Coleman 15HP Short Tiller – 4S (M15773)

Coleman 15HP Short Tiller – 4-Stroke outboard motor is a robust and efficient engine, designed to deliver reliable performance for small boats and light-duty applications. Known for its affordability and simplicity, it’s a great choice for recreational boaters, anglers, and utility craft operators. Below is a detailed description: Coleman 15HP Short Tiller – 4S (M15773)

General Information

  • Brand: Coleman
  • Horsepower: 15 HP
  • Engine Type: 4-Stroke
  • Control Type: Tiller Handle
  • Shaft Length: Short (15 inches)
  • Fuel Delivery: Carbureted

Key Features

  • Fuel Efficiency: The 4-stroke engine design delivers excellent fuel economy compared to 2-stroke models.
  • Tiller Handle Control: Integrated throttle and gear shift provide precise and easy handling.
  • Manual Start (Optional Electric Start): Dependable pull-start system, with electric start options available on some models.
  • Lightweight Design: Typically weighing around 110–120 pounds, making it portable and easy to install.
  • Low Emissions: Meets EPA standards for reduced environmental impact.

Fuel and Oil

  • Fuel Type: Unleaded gasoline (87 octane minimum).
  • Oil Type: SAE 10W-30 or 10W-40 (certified for marine use).
  • Fuel Tank: External fuel tank, typically 3–6 gallons in capacity.

Performance and Applications

  • Speed Potential: Capable of propelling small boats at speeds of 15–25 mph, depending on the boat size and load.

Applications:

  • Fishing boats
  • Dinghies or tenders
  • Utility boats

Maintenance Tips

Fuel System Maintenance

  • Inspect fuel lines, primer bulbs, and connections regularly for wear or leaks.
  • Replace the inline fuel filter annually or as needed.
  • Use a fuel stabilizer to prevent carburetor issues during off-season storage.

Oil Changes

  • Change the engine oil every 50–100 hours or at least once per season.
  • Replace the oil filter during each oil change for optimal performance.

Cooling System Care

  • Check and replace the water pump impeller every 2–3 years to ensure proper cooling.
  • Flush the cooling system with fresh water after saltwater use to prevent corrosion.

Spark Plug Replacement

  • Recommended Spark Plug: NGK DPR6EA-9 or equivalent.
  • Replace spark plugs annually or every 100 hours of use. Check and set the gap to 0.030 inches.

 Carburetor Cleaning

  • Clean the carburetor if the engine idles roughly or exhibits power loss. Use a carburetor cleaner or rebuild kit.

Common Issues and Troubleshooting

Starting Problems

  • Cause: Stale fuel, weak spark, or clogged carburetor.
  • Solution: Replace old fuel, clean or rebuild the carburetor, and inspect spark plugs.

Overheating

  • Cause: Worn or damaged impeller, or debris in the cooling water intake.
  • Solution: Replace the impeller and clean the intake screens.

Loss of Power

  • Cause: Fouled spark plugs, dirty carburetor, or restricted fuel flow.
  • Solution: Replace spark plugs, clean the carburetor, and inspect the fuel lines and filter.

Parts and Accessories

OEM Parts

Aftermarket Parts

  • Sierra Marine: Offers reliable aftermarket components, including filters and impellers.
  • Mallory Marine: Known for high-quality ignition and carburetor components.

Used Parts

  • eBay: Search for “Coleman 15HP 4-stroke parts” for used or reconditioned options.
  • Local Salvage Yards: An affordable source for rare or discontinued parts.

Performance Enhancements

Propeller Upgrade:

  • Aluminum propellers are standard; upgrading to stainless steel can improve durability and performance.
  • Choose a propeller pitch that suits your boat’s size and intended use.

Fuel Efficiency Tips:

  • Use ethanol-free gasoline to minimize carburetor issues.
  • Add a fuel stabilizer like Sta-Bil to keep fuel fresh during storage.

Engine Tune-Up:

  • Periodically decarbonize the engine to maintain peak performance and extend its lifespan.

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