RECMAR 50HP 4-Stroke Outboard Marine Engine Parts

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This page is tailored for RECMAR 4‑Stroke 50 HP outboard engines. Use it to find compatible replacement parts and practical service information. Below you’ll find maintenance tips, common replacement categories, and troubleshooting guidance. You can also browse our main RECMAR parts collection. Scroll to the bottom to start browsing parts for this engine, and remember you can use the “Filter & Sort” controls on the collection page to narrow results by horsepower, year range, and part category.

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How to Identify Your 50 HP Model

Locate the nameplate/serial label on the transom bracket or swivel bracket. Record the full model code and serial number.
Decode the suffixes: shaft length (S/M/L/XL), control type (tiller vs remote), and charging/trim options may be indicated by letters at the end of the code.
For 4‑stroke models, note the oil filter location and cowl decals; these often help distinguish platform generations.
Different 50 HP platforms exist (inline‑3 vs inline‑4). Cylinder count and intake layout help determine which parts fit.

Platform Overview

Inline‑3 EFI 4‑Stroke (common across several manufacturers)

Feature	Description
Configuration	3‑cylinder inline 4‑stroke, EFI; compact, light, smooth at mid‑range.
Common Models	Typical 50 HP EFI 4‑stroke inline‑3 variants from major brands.
Advantages	Good fuel economy, simple service access, strong low‑to‑mid torque.
Notes	Many service parts (plugs, anodes, water pump kits) are platform‑specific—confirm by model code/serial.

Inline‑4 EFI 4‑Stroke (seen on some 50–60 HP families)

Feature	Description
Configuration	4‑cylinder inline 4‑stroke, EFI; often shares components with 60 HP siblings.
Common Models	Typical 50 HP EFI 4‑stroke inline‑4 variants in certain model families.
Advantages	Very smooth at idle, refined top‑end, robust charging on some versions.
Notes	Water pump kits and anodes may match the 60 HP platform; verify by model code and gearcase size.

Routine Maintenance & Service Parts

Intervals below are general guidelines for 4‑stroke outboards; always follow your official service manual and local operating conditions.

Item	Interval*	Remarks	Parts Link
Engine oil + filter	Every 100 hours or annually	Warm engine before draining; replace crush washer; verify capacity.	Oil Filters
Gear oil (lower unit)	Every 100 hours or annually	Inspect for water/milkiness or metal; replace drain plug seals.	Lower Unit Seal Kits
Spark plugs	Inspect 100 hrs; replace 200 hrs	Check gap and color; replace if fouled or worn.	Spark Plugs
Fuel filter / water separator	Inspect 50 hrs; replace 100 hrs	Drain or replace more often with ethanol fuel or contamination.	Fuel Filters
Water pump impeller/kit	200 hours or every 2 seasons	Shorten interval for sandy/silty or high‑temp operation.	Impeller Rebuild Kits
Anodes (internal & external)	Inspect every 50 hrs; replace as needed	Use correct material (aluminum, zinc, or magnesium) for your waters.	Anodes
Drive/alternator belt (where equipped)	Inspect 100 hrs; replace if cracked	Check tension and pulley condition; replace if glazed or frayed.	Belts

Frequently Used Parts Categories

Routine Service: Service & Maintenance Kits
Cooling System: Water Pumps and Impellers
Fuel System: Fuel Filters and Fuel Pumps
Ignition / Electrical: Electrical Items and Starters
Corrosion Protection: Anodes
Propulsion: Propellers
Seals & Gaskets: Gaskets and Oil Seals

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream or overheat alarm	Inspect intake screens for debris; verify impeller age; test thermostat.	Water pump kit, impeller, thermostat, intake screen, anodes.
Hard starting or rough idle	Confirm fresh fuel; check spark plug condition/gap; inspect fuel filter for water.	Spark plugs, fuel filter, injectors, hoses, idle air components.
Poor acceleration or power loss	Check propeller for damage/cavitation; verify fuel delivery and compression.	Propeller, fuel pump, filters, ignition components.
Gearcase noise or metal in gear oil	Drain and inspect oil; check for water intrusion; verify correct oil level.	Lower unit seal kit, bearings, shims, drain plug seals.
Battery not charging	Load‑test battery; inspect belt (if equipped); check rectifier/voltage regulator connections.	Alternator, rectifier/regulator, belt, electrical connectors.

FAQs

Are parts interchangeable between different years or platforms?

Some 50 HP 4‑stroke lines share filters, anodes, and pump kits across multiple years, but platform differences (inline‑3 vs inline‑4, gearcase size, ignition variants) affect compatibility. Always confirm with your exact model code and serial.

When should the impeller be replaced?

As a rule, every 200 hours or two seasons—whichever comes first. Shorten the interval if operating in sandy/silty water, running in weeds, or if the engine overheated.

How often should gear oil be changed?

Change lower unit oil every 100 hours or annually. Inspect immediately if you see milky oil (water intrusion) or metal shavings.

What information helps confirm part compatibility?

Provide the brand, full model code, serial number, approximate year, shaft length, and control type. Photos of the nameplate and the part you’re replacing are extremely helpful.

Ready to find parts? Browse our main RECMAR parts collection and filter by category to zero in on the components you need for your 50 HP 4‑stroke.

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If you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.