0777185 Evinrude Johnson Engine Tuner | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Engine Tuner - Part Number: 0777185

A genuine BRP aerosol engine-cleaning treatment formulated to remove gum, varnish and excessive combustion deposits from petrol-powered two-stroke and four-stroke engines.

Engine Tuner is sprayed through the engine air intake or through the compatible Evinrude and Johnson maintenance-valve adaptor on applicable carburetted two-stroke outboards.

The treatment helps loosen deposits from piston rings, piston crowns, combustion chambers, valves and exhaust or intake ports.

⚙️ Key Features

• Genuine BRP Evinrude Johnson OEM maintenance product
• Correct full part number 0777185
• Common reference 777185
• 13-ounce aerosol container
• Suitable for petrol two-stroke and four-stroke engines
• Removes gum and varnish deposits
• Helps free carbon-stuck piston rings
• Cleans combustion chambers, valves and ports
• Compatible with the optional maintenance-valve hose assembly

🚤 Compatibility

Suitable for maintenance of

• Evinrude two-stroke outboards
• Johnson two-stroke outboards
• Evinrude E-TEC engines where the prescribed service procedure permits
• Carburetted petrol outboards
• Fuel-injected petrol outboards when applied using the correct procedure
• Four-stroke petrol outboards
• OMC marine petrol engines
• Other internal-combustion petrol engines where an intake-applied cleaner is approved

Important use note

• Engine Tuner is not two-stroke oil.
• Engine Tuner is not storage or fogging oil.
• Do not pour or mix the product into the engine oil tank.
• Do not substitute it for fuel conditioner or stabiliser.
• Application through the Schrader-style maintenance valve requires the correct 769014 adaptor.

🔌 Function

Engine Tuner softens and removes carbon, gum and varnish that can accumulate during normal combustion.

Deposits may restrict piston-ring movement, reduce compression sealing, interfere with valves or ports and contribute to rough running.

Common symptoms associated with excessive deposits

• Piston rings stick in their grooves
• Compression becomes uneven
• Engine idles roughly
• Acceleration is hesitant
• Spark plugs foul repeatedly
• Engine produces excessive smoke
• Cold starting becomes difficult
• Power output drops
• Carbon accumulates around exhaust ports
• Engine knocks or runs unevenly under load

Recommended service procedure

• Warm the engine according to the product directions
• Remove the engine cover and identify the correct air-intake or maintenance-valve application point
• Keep the engine cooling system supplied with water during treatment
• Apply the product evenly according to the label instructions
• Avoid uncontrolled overspeed while spraying
• Allow the specified soak period
• Restart the engine and run it long enough to remove the cleaner
• Expect temporary smoke while loosened deposits are expelled
• Inspect or replace heavily fouled spark plugs after treatment
• Do not leave the cleaner inside the engine as a storage preservative
• BRP guidance commonly recommends treatment approximately every 50 operating hours or annually

Safety and handling

• Use outdoors or in a well-ventilated service area
• Keep away from sparks, flames and hot surfaces
• Wear eye and skin protection
• Do not inhale the aerosol mist
• Store the pressurised container away from heat
• Aerosol shipping may be restricted to road transport

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 0777185
• 777185
• 0767024
• 767024
• 0765740
• 765740
• Related bulk engine tuner: 0777189 / 777189
• Related injector valve and hose assembly: 0769014 / 769014
• Earlier injector-hose reference: 0763644 / 763644

Aftermarket / Functional Alternatives

• Quicksilver Power Tune Internal Engine Cleaner: 858080Q03
• Mercury / Quicksilver Power Tune - 12-ounce aerosol
• Other marine combustion-chamber cleaners may be available, but are not direct part-number replacements

Alternative-product note

• Quicksilver Power Tune is a functional decarbonising alternative for compatible petrol engines.
• Application procedure, soak time and post-treatment operation can differ between products.
• Always follow the instructions printed on the selected cleaner.

📦 Condition

• Genuine BRP Evinrude Johnson OEM maintenance product
• Brand new
• 13-ounce aerosol container
• Pressurised and transport-restricted product
• Supplied in genuine or equivalent protective packaging