Johnson 35HP 2-Stroke Outboard Marine Engine Parts

(34 products)

This page is tailored for Johnson 2-Stroke 35HP outboard engines. Use it to find compatible parts, routine service items, and troubleshooting guidance. You’ll also find quick maintenance tips and links to common replacement categories. You can browse the main Johnson/Evinrude collection as well. Scroll to the bottom of the page to start browsing parts for this engine, and remember you can use the Filter & Sort controls on the collection page to narrow by horsepower, year range, and part category.

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How to Identify Your 35HP Model

Nameplate location: Look on the transom bracket or swivel bracket for the aluminum serial/model plate or a decal under the engine cover.
Model code basics: Johnson model numbers typically include horsepower and suffix letters for features. Common suffixes indicate shaft length (S=15", L=20", X=25"), start/control type (R=rope, E=electric), and a year suffix.
2‑Stroke variants: 35HP models are typically carbureted inline‑2 engines. Some share gearcase/cooling parts with 30/40HP families, so verify by full model and serial number.
Prop/gearcase notes: Props and gearcase seals may vary by year and gearcase size; confirm spline count and gearcase family before ordering.

Engine Overview

Inline‑2 Carbureted 2‑Stroke (typical 1976–1992 family)

Feature	Description
Configuration	Inline‑2, carbureted 2‑Stroke, CDI or magneto ignition depending on year
Common Models	35HP 2‑Stroke in short/long shaft, rope/electric start variants
Advantages	Light weight, simple to service, strong low‑to‑mid‑range torque for small boats
Notes	Many cooling and gearcase components overlap with 30–40HP families. Water pump and prop hardware vary by year/gearcase; confirm by model and serial.

Routine Maintenance & Service Parts

Intervals below are general guidelines for typical recreational use. Always follow the official service manual for your exact model and operating conditions.

Item	Interval*	Remarks	Parts Link
Lower unit gear oil	Every 100 hrs or annually	Check for water contamination (milky oil). Replace drain gaskets each service.	Johnson/Evinrude Collection
Spark plugs	Inspect every 50 hrs; replace 100 hrs/season	Use correct heat range and gap for 35HP 2‑Stroke; replace if fouled or worn.	Spark Plugs
Fuel filter / inline filter	100 hrs or annually	Replace more often with stale/ethanol fuel exposure; check primer bulb and lines.	Fuel Filters
Water pump impeller/kit	Every 2 seasons or 100 hrs	Critical for cooling. Replace sooner if weak tell‑tale, overheat, or sandy use.	Johnson/Evinrude Water Pump Kits
Anodes (zincs)	Inspect every 50 hrs; replace when 50% depleted	Use zinc in salt, aluminum in brackish, magnesium in fresh water as applicable.	Johnson/Evinrude Anodes
Lower unit seal kit (if leaking)	As needed	Use if water present in gear oil or oil weeps at propshaft/driveshaft seals.	Johnson/Evinrude Lower Unit Seal Kits
2‑Stroke oil mix (premix tanks)	Every refuel	Most 35HP models use 50:1 TC‑W3. Verify if your engine has oil injection.	Johnson/Evinrude Collection

*Intervals assume normal recreational use; reduce intervals for heavy, commercial, or sandy/silty operation.

Frequently Used Parts Categories

Cooling system – Water Pump Repair Kits and Impellers
Lower unit service – Lower Unit Seal Kits
Propellers & hardware – Johnson/Evinrude Propellers
Ignition & tune‑up – Spark Plugs and Rectifiers
Fuel system – Fuel Filters and Fuel Pumps
Gaskets & sealing – Johnson/Evinrude Gaskets
Bearings & corrosion protection – Johnson/Evinrude Bearings and Anodes

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream / overheat alarm	Inspect intake screen for debris; confirm thermostat operation; check impeller age/condition.	Water pump kit, impeller, thermostat, intake screen
Poor acceleration / power loss	Check fuel quality and filter; verify spark on both cylinders; confirm prop pitch/damage.	Fuel filter, fuel pump, spark plugs, propeller
Hard starting / rough idle	Primer bulb integrity; choke/enrichment operation; plug condition and gap; air leaks in fuel lines.	Spark plugs, fuel lines/bulb, carb service kit, gaskets
Excessive smoke (2‑Stroke)	Verify correct 50:1 mix; ensure warm‑up complete; check plugs for fouling.	Spark plugs, carb gaskets, fuel/oil mix
Gearcase noise / metal in oil	Check gear oil for metal; inspect propshaft seal for fishing line damage; perform pressure/vacuum test.	Lower unit seal kit, bearings, drain screw gaskets

FAQs

Are 35HP parts interchangeable across different years?

Many 35HP parts interchange within the 30–40HP family, but cooling and gearcase components can differ by year and gearcase size. Always confirm with full model and serial numbers before ordering.

When should the impeller be replaced?

For most recreational use, replace the impeller every 2 seasons or ~100 hours. Replace sooner if the tell‑tale is weak, the engine overheats, or the pump ingested sand/silt.

How often should I change the lower unit gear oil?

At least once per season or every 100 hours. Inspect for water (milky oil) or metal. If water is present, service with a seal kit before further operation.

What information do you need to confirm part compatibility?

Provide the full model number, serial number, shaft length (S/L/X), and any notable features (electric start, control type). Photos of the nameplate and the part needing replacement are very helpful.

Ready to find parts for your Johnson 35HP? Browse the main Johnson/Evinrude collection and use the filters to narrow by horsepower, year, and part type.

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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.