The OMC 0777185 Engine Tuner & Fuel System Cleaner is a genuine OEM aerosol treatment designed to restore performance in Johnson and Evinrude outboard engines. Applied directly through the air intake, this 13 oz spray effectively dissolves gum, varnish, and excessive carbon deposits from rings, pistons, valves, ports, and combustion chambers — without disassembly.
Key Features:
- Removes harmful carbon deposits, gum, and varnish from internal engine components
- Compatible with both 2-cycle and 4-cycle marine engines
- Cleans rings, pistons, valves, ports, and combustion chambers
- Restores power, efficiency, and smooth engine operation
- Genuine OEM BRP/OMC product — not aftermarket
- Also suitable for use on power tools and snowmobiles
- 13 oz aerosol spray can with standard cap
- Not to be mixed with oil
Recommended Use: Remove the propeller and run the motor to normal operating temperature with cooling water supplied. Set the motor to fast idle (approximately 1,200 RPM) and spray the full contents into the carburetor throat(s). Allow to soak for 3 to 16 hours, then restart and run at fast idle (1,500 RPM) for at least 15 minutes. For best results, use every 50 hours of operation or once annually as part of routine engine maintenance.
Note: If injecting through the service valve, companion injection hose part number 0769014 may be required. This product is classified as hazardous material and must ship via ground service only — it cannot be shipped by air.
Supersedes OEM Part Numbers: 0765740, 174996, 771297, 771299, 775625, 775627, 777188
