Johnson 5.5HP 2-Stroke Outboard Engine Parts

(6 products)

This page is dedicated to Johnson 2-Stroke 5.5HP outboard engines. Use it to find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Johnson/Evinrude collection, and at the bottom of this page you’ll find a prompt to start browsing parts for this engine. 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 5.5HP Model

Find the model/serial plate on the transom bracket or swivel bracket. Some older units also have an aluminum core plug with the model stamped.
Read the full model code and suffix: these typically indicate shaft length (short/long), tiller vs. remote controls, and production year or revision.
Most 5.5HP Johnson units are carbureted 2‑stroke twins with rope start. Note whether your ignition uses points/magneto or a later CDI module—this affects ignition parts selection.
Confirm if your engine uses pre-mix fuel (most small 2‑strokes). Always follow the mix ratio shown on the cowling decal or in the service manual.

Engine Overview

Johnson 5.5HP 2‑Stroke Platform

Feature	Description
Configuration	Small-displacement twin-cylinder, carbureted 2‑stroke; typically rope-start, tiller-steer; magneto/points or CDI ignition depending on year.
Common Models	Classic Johnson 5.5HP 2‑stroke outboards in short and long shaft variants (various year revisions).
Advantages	Lightweight, simple to service, good low-speed thrust for small boats and tenders.
Notes	Verify parts by full model/serial. Water pump and lower unit seals are routine service items. Propellers and ignition parts vary by year and shaft specification.

Routine Maintenance & Service Parts

Intervals below are general guidelines for small 2‑stroke outboards. Always follow the procedures and schedules in your official service manual.

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Check for water intrusion (milky oil) or metal. Replace seals if contamination is found.	Service & Maintenance Kits
Spark plugs	100 hours or yearly	Use the correct heat range; gap per manual. Fouling often indicates rich mix or excessive idling.	Spark Plugs
Fuel filter / in-line strainer	100 hours or every season	Replace clogged elements; use ethanol-safe hose and clamps.	Fuel Filters
Water pump impeller/kit	Inspect annually; replace every 2–3 seasons	Critical for cooling; replace sooner if tell‑tale is weak or after sand/debris ingestion.	Johnson/Evinrude/OMC Water Pump Repair Kits
Anodes	Inspect every 50 hours; replace at ~50% loss	Choose zinc (salt), aluminum (brackish/salt), or magnesium (fresh) as appropriate.	Johnson/Evinrude/OMC Anodes
Fuel/oil pre‑mix (2‑stroke)	Every fill‑up	Mix fresh gasoline with TC‑W3 oil at the ratio specified on your cowling or in your manual.	Johnson/Evinrude Collection
Lower unit seal kit (as needed)	When gear oil shows water/milkiness	Replace prop shaft and drive shaft seals; pressure/vacuum test after service.	Johnson/Evinrude/OMC Lower Unit Seal Kits
Propeller & hardware check	Seasonally	Inspect for dings, bent blades, or hub slippage; verify nut and cotter pin condition.	Johnson/Evinrude/OMC Propellers

Frequently Used Parts Categories

Routine Service: Johnson/Evinrude/OMC Service & Maintenance Kits
Cooling System: Water Pump Repair Kits
Fuel System: Fuel Filters
Ignition / Electrical: Electrical Items and Spark Plugs
Propulsion: Propellers
Corrosion Protection: Anodes
Sealing & Driveline: Lower Unit Seal Kits and Bearings

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale or overheat	Inspect intake screen for debris; verify water pump impeller condition; confirm thermostat operation.	Water pump kit, thermostat, intake screen
Hard starting / rough idle	Check spark strength and plug gap; replace stale fuel; verify choke/enrichment function and idle mixture.	Spark plugs, carburetor kit, fuel filter
Poor acceleration / power loss	Inspect propeller for damage or wrong pitch; check for fouled plugs and restricted fuel flow.	Propeller, spark plugs, fuel filter
Excessive smoke / plug fouling	Confirm correct fuel/oil mix; ensure choke fully opens; verify thermostat isn’t stuck open (cold running).	Spark plugs, carburetor needle/seat, thermostat
Gearcase noise or milky gear oil	Drain and inspect oil; check prop shaft seal and drive shaft seal; pressure/vacuum test gearcase.	Lower unit seal kit, bearings, prop shaft seals

FAQs

Are 5.5HP Johnson parts interchangeable across different years?

Many fasteners and wear items are shared, but ignition, carburetor, and some gearcase components can vary by year, shaft length, and ignition type. Always confirm with the full model code and serial number before ordering.

When should I replace the impeller?

Inspect annually and replace every 2–3 seasons under normal use. Replace immediately if the tell‑tale is weak, you overheated the motor, or you operated in sand/muddy water.

How often should I change the lower unit gear oil?

At least once per season or every 100 hours. If water or metal is present, service the gearcase and consider replacing seals before returning to service.

What information do you need to confirm part compatibility?

Please provide the model and serial numbers from the nameplate, shaft length (short/long), control type (tiller/remote), and any known year. Photos of the nameplate and the part being replaced are very helpful.

Ready to find the right parts? Browse the main Johnson/Evinrude collection by horsepower, year, and model to zero in on compatible components for your 5.5HP 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.