Evinrude 2-Stroke 50HP Outboard Marine Engine Parts

(49 products)

This page is tailored for Evinrude 2‑Stroke 50HP outboard engines. Use it to find compatible parts, routine service information, maintenance tips, common replacement items, and troubleshooting guidance. You can also browse our main Evinrude/Johnson collection. Scroll to the bottom of the page to start browsing parts for this engine, and on the collection page use the Filter & Sort controls to narrow results by horsepower, year range, and part category.

Browse All Evinrude Parts

How to Identify Your 50HP Model

Find the identification plate on the transom bracket or swivel bracket. It lists model, serial number, and sometimes a code that indicates year and configuration.
Model code basics: the letters typically indicate brand/family and features; suffixes often denote shaft length (S/L/XL), steering/control type (tiller/remote), and revision year.
2‑Stroke variants: older carbureted 50HP models have carburetors and a separate oil tank or premix; later E‑TEC direct‑injection models have E‑TEC branding and an under‑cowl oil tank with an injector system.
If unsure, record the full model and serial numbers from the plate and the cowl decal; these help verify exact parts fitment.

Engine/Platform Overview

Legacy Carbureted 2‑Stroke (50HP)

Feature	Description
Configuration	Twin‑cylinder, loop‑charged carbureted 2‑Stroke outboard
Common Models	50HP 2‑Stroke carbureted variants with short/long shaft and remote/tiller options
Advantages	Light weight, strong holeshot, simple mechanical systems
Notes	Use quality 2‑Stroke oil; keep carbs and fuel filters clean; many models require 50:1 premix unless equipped with oil injection—follow your cowl decal or service manual.

E‑TEC Direct Injection 2‑Stroke (50HP)

Feature	Description
Configuration	Twin‑cylinder E‑TEC direct‑injection 2‑Stroke with under‑cowl oil tank
Common Models	50HP E‑TEC variants across multiple years and shaft lengths
Advantages	Clean burn, improved fuel/oil economy, quick starts, reduced smoke
Notes	Use approved Evinrude/Johnson 2‑Stroke oil; keep the oil tank, lines, and filters clean; follow E‑TEC service procedures for oiling and winter storage.

Routine Maintenance & Service Parts

Intervals below are typical guidelines for 2‑Stroke outboards. Always follow the official service manual for your exact model and operating conditions.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Change more often if water intrusion is suspected; inspect magnetic drain plug.	Service & Maintenance Kits
Spark plugs	Inspect every 50 hours; replace 100–200 hours	Use correct heat range and gap; replace sooner if fouling occurs.	Spark Plugs
Fuel filter / inline filter	Every 100 hours or annually	Replace more often with ethanol fuel or contaminated fuel supply.	Fuel Filters
Water pump impeller / kit	Every 2 seasons (or 200 hours); inspect annually	Critical for cooling; replace sooner if tell‑tale weak or overheating occurs.	Water Pump Repair Kits (Johnson/Evinrude)
Anodes (corrosion protection)	Inspect every 50 hours; replace when 50% consumed	Use zinc for salt water, aluminum for brackish/salt, magnesium for fresh where applicable.	Anodes (Johnson/Evinrude)
2‑Stroke oil supply (injection or premix)	Check every outing	Keep the oil tank filled with approved oil; inspect oil lines, primer bulb, and filters. For premix, follow the specified ratio (many carb models use 50:1; confirm for your engine).	Oil/Fuel Hoses (Johnson/Evinrude)

Frequently Used Parts Categories

Routine Service: Johnson/Evinrude Outboard Parts
Cooling System: Water Pump Repair Kits
Fuel System: Fuel Filters
Ignition / Electrical: Electrical Items
Propulsion: Propellers (Johnson/Evinrude)
Gearcase & Seals: Lower Unit Seal Kits
Corrosion Protection: Anodes

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale or overheat alarm	Inspect water intake screens for debris; evaluate impeller condition; verify thermostat operation.	Water pump kit, intake screen, thermostat
Poor acceleration or power loss	Check propeller for damage/cavitation; replace fuel filter; inspect spark plugs; confirm throttle/carb synchronization on carb models.	Propeller, fuel filter, spark plugs, carburetor rebuild kit
Hard starting / rough idle	Prime fuel system; inspect fuel lines and connectors for air leaks; clean or rebuild carb(s) on carb models; check plug gap/condition.	Fuel line/connector, inline filter, spark plugs, carb kit
Excessive smoke (2‑Stroke)	Verify correct oil ratio or injection setting; ensure thermostat closes properly (engine reaching temp); replace fouled plugs.	Spark plugs, thermostat, oil lines
Gearcase noise or metal in gear oil	Inspect gear oil for water/metal; check prop shaft for fishing line; pressure test gearcase for seal leaks.	Lower unit seal kit, bearings, gear oil

FAQs

Are parts interchangeable between different years or platforms?

Some components interchange across years, but ignition, fuel, and cooling parts often differ between carbureted and E‑TEC models and even within year ranges. Always confirm with your full model and serial number before ordering.

When should the impeller be replaced?

Inspect annually and replace every two seasons or sooner if the tell‑tale is weak, you ingest sand/debris, or the engine overheats. Impellers harden and take a set over time even if hours are low.

How often should gear oil be changed?

Change the lower unit gear oil at least once per year or every 100 hours. If the oil appears milky (water intrusion) or metallic, service the gearcase and replace seals before further use.

What information do you need to confirm part compatibility?

Provide the full model code, serial number, shaft length, control type (tiller/remote), and whether the engine is carbureted or E‑TEC. Photos of the nameplate and the part to be replaced are also helpful.

Ready to find parts for your Evinrude 2‑Stroke 50HP? Browse the main Evinrude/Johnson collection by horsepower, year, and model.

Shop Evinrude Parts

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