Description
Mercury 854256 Carburetor Repair Kit for 25-40 HP Outboard Engines
The Mercury 854256 Carburetor Repair Kit is designed for servicing and rebuilding compatible Mercury outboard carburetors. Built for select 25-40 HP Mercury outboard engine applications, this repair kit helps restore proper fuel delivery, idle quality, throttle response, and dependable carburetor operation.
Key Features
- Designed for carburetor repair and fuel-system service on compatible Mercury outboards
- Fits select Mercury 25-40 HP outboard engine applications
- Supports proper carburetor sealing, fuel metering, and internal component service
- Useful for maintenance, rebuilds, and repair of worn carburetor components
- Helps address common carburetor issues such as hard starting, rough idle, poor throttle response, and fuel leakage when caused by serviceable carburetor wear
- Engineered for marine outboard fuel-system environments
Fitment / Product Details
- Brand: Mercury
- Part Number: 854256
- Product Type: Carburetor Repair Kit
- Application: Select Mercury outboard carburetor repair applications
- Engine Types: Mercury carbureted outboard engines; select FourStroke applications where specified by service chart
- HP Range: 25-40 HP
- Serial Ranges: Select 30 HP FourStroke 3-cylinder applications include USA serial range 0G760300-0T178499 for 854256 and USA 0T178500 and above / BEL 0P153500 and above for 854256 1
- UPC: Not provided
- Country of Origin: Not provided
- Package Dimensions: Not provided
- Package Weight: Not provided
- Prop 65: Not provided
- Supersedes / Replaces: Not provided
- Fitment Note: Match by part number, model, horsepower, carburetor type, serial number, and service manual before ordering or installation.
What’s Included
- Carburetor repair kit components for compatible Mercury carburetor service
- Only components included by the manufacturer for part number 854256 are included
Expanded Fitment
- Select Mercury 25 HP outboard carburetor applications
- Select Mercury 30 HP outboard carburetor applications
- Select Mercury 40 HP outboard carburetor applications
- 30 HP FourStroke 3-cylinder applications using repair kit 854256
- 30 HP FourStroke 3-cylinder applications using repair kit 854256 1 where specified by serial range
- Fuel-system service applications where the Mercury parts chart calls for carburetor repair kit 854256
Why You Should Buy
- Ideal for restoring carburetor performance during outboard fuel-system service
- Helps support smoother idle, cleaner fuel delivery, and more reliable engine operation
- Useful for technicians, boat owners, and maintenance shops servicing compatible Mercury outboards
- Part-number-specific listing helps reduce ordering mistakes for carburetor repair work
- Designed for marine use where correct carburetor sealing and fuel metering are critical
Common Applications
- Mercury 25 HP carbureted outboard carburetor service
- Mercury 30 HP carbureted and select FourStroke outboard carburetor service
- Mercury 40 HP carbureted outboard fuel-system maintenance
- Carburetor rebuilds after storage-related fuel varnish, worn seals, or serviceable carburetor wear
- Routine outboard fuel-system restoration and maintenance
FAQ
- What is Mercury 854256 used for? It is a carburetor repair kit used to service compatible Mercury outboard carburetors.
- What horsepower engines does this fit? This listing is for select Mercury 25-40 HP outboard engine applications. Confirm fitment by part number, model, serial number, and service manual.
- Does this fit all Mercury 25-40 HP outboards? No. Fitment can vary by model year, carburetor type, engine configuration, and serial number.
- Is this for a 2-stroke or 4-stroke engine? The supplied application is for Mercury 25-40 HP outboards, and chart data includes select 30 HP FourStroke 3-cylinder applications. Always verify by serial number.
- Can this kit fix rough idle or hard starting? It may help when those issues are caused by serviceable carburetor wear, clogged passages, failed gaskets, or fuel-metering issues. Other ignition, compression, or fuel-supply problems should also be checked.
- Should I use a service manual? Yes. Carburetor repair should be completed using the correct Mercury service manual procedures and specifications.
- How do I confirm this is the right kit? Match part number 854256 to your engine model, horsepower, carburetor application, serial number, and service manual before ordering.