Evinrude 4HP 2-Stroke Outboard Marine Engine Parts

(16 products)

This page is dedicated to Evinrude 2‑Stroke 4 HP outboard engines. Use it to find compatible parts and practical service information, including maintenance tips, commonly replaced items, and troubleshooting guidance. You can also browse our main Johnson/Evinrude/OMC collection. Scroll to the bottom of this 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/section.

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How to Identify Your 4 HP Model

Nameplate location: look on the transom bracket or swivel bracket for the model and serial plate.
Model code basics: older 2‑Stroke 4 HP engines may use codes like 4006E; suffix letters often indicate features such as shaft length (S/L), starting method, or production run.
2‑Stroke identifiers: premix fuel/oil requirement and a carburetor with reed valves indicate the 2‑Stroke platform.
Record details: model number, serial number, shaft length, and start type will help confirm exact parts compatibility.

Engine Overview

Evinrude 4 HP 2‑Stroke Platform

Feature	Description
Configuration	Compact, carbureted 2‑Stroke single with reed‑valve induction, magneto ignition, rope start; water‑cooled via impeller.
Common Models	Examples include model codes such as 4006E (circa 1970) and similar 4 HP variants; Johnson equivalents from the same era often share many components.
Advantages	Lightweight, portable, simple to service, good reliability for dinghies and small craft.
Notes	Many wear items (impellers, anodes, seals, spark plugs) are widely available aftermarket. Always verify with the exact model/serial as some parts differ by year and shaft length.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small Evinrude 2‑Stroke outboards. Always follow your engine’s official service manual and local operating conditions.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hrs or annually	Check for water intrusion (milky oil). Replace seals if contamination is found.	Service & Maintenance Kits
Spark plugs	Inspect 50 hrs; replace yearly or as needed	Verify correct heat range and gap; replace if fouled or worn.	Spark Plugs
Fuel filter / inline screen	Inspect 50 hrs; replace 100 hrs or yearly	Use fresh fuel; replace if restricted or contaminated.	Fuel Filters
Water pump impeller/kit	Every 2–3 seasons or 200 hrs	Critical for cooling on low‑hp engines; replace sooner if stream is weak.	J/E/OMC Water Pump Kits
Anodes (zincs)	Inspect each 50 hrs; replace when 50% worn	Choose alloy for your water (salt, brackish, fresh).	J/E/OMC Anodes
Fuel/oil premix (TC‑W3)	Each fill‑up (typical 50:1 unless specified otherwise)	Use fresh gasoline and quality marine 2‑Stroke oil; verify exact ratio in your manual.	Evinrude Parts
Propeller & hardware inspection	Each trip; replace as needed	Check for dings, bent blades, and secure cotter pin/nut.	J/E/OMC Propellers
Lower unit seals (inspect)	Check if water found in gear oil	Reseal gearcase if milky oil or leaks are present.	J/E/OMC Lower Unit Seal Kits

Frequently Used Parts Categories

Routine Service — J/E/OMC Service & Maintenance Kits
Cooling System — Water Pump Repair Kits
Fuel System — Fuel Filters
Ignition / Electrical — Electrical Items
Gearcase & Seals — Lower Unit Seal Kits
Propellers & Hardware — J/E/OMC Propellers
Gaskets & Powerhead — J/E/OMC Gaskets

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream or overheat	Inspect intake screen for blockage; verify impeller condition and housing wear.	Water pump kit, intake screen, thermostat (if fitted).
Hard starting / rough idle	Check choke operation, plug gap/condition, and for air leaks in fuel line/connector.	Spark plugs, fuel filter, carburetor kit, fuel pump diaphragm.
Poor acceleration / power loss	Inspect prop for damage; verify fresh fuel and correct premix; check for clogged jets.	Propeller, spark plugs, carburetor kit, reed (leaf) valves.
Excessive smoke	Confirm oil ratio; drain stale fuel; verify plug heat range and mixture settings.	Correct TC‑W3 oil ratio, fresh fuel, spark plugs.
Gearcase noise or metal in oil	Check gear oil for glitter/milkiness; inspect prop shaft seal and water intrusion.	Gear oil, lower unit seal kit, bearings.

FAQs

Are parts interchangeable between different years or Johnson/Evinrude variants?

Many service items interchange across Evinrude and Johnson 4 HP 2‑Stroke models of similar years, but not all. Use the exact model and serial to verify before ordering.

When should the water pump impeller be replaced?

As a precaution, replace every 2–3 seasons or about 200 hours, or immediately if the tell‑tale stream weakens or you overheat.

How often should I change the lower unit gear oil?

At least once per season or every 100 hours. If you find milky oil or metal, reseal and service the gearcase before further use.

What information helps confirm part compatibility?

Provide the model and serial numbers, shaft length (S/L), starting method, and photos of the nameplate and the part area. This ensures we match the correct components.

Ready to shop? Browse our main Johnson/Evinrude/OMC collection by horsepower, year, and model to find parts for your Evinrude 4 HP 2‑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.