# 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

  

🔄 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.

  

🚤 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

  

📦 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

## Details

- **Price:** 28.25 AUD
- **Vendor:** BRP (Evinrude/Johnson)
- **Tags:** Evinrude Johnson Outboard Parts | BRP Marine Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 28.25 AUD | In stock |

## Images

- 0777185 Evinrude Johnson Engine Tuner | Genuine OEM BRP Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/777185-0777185-engine-tuner)
> Updated: 2026-07-12