Yamaha 50-60HP 2-Stroke Outboard Engine Parts

(1 products)

This page is for Yamaha 2‑Stroke 50–60HP outboard engines. Use it to find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Yamaha collection. Scroll to the bottom 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 Yamaha Parts

How to Identify Your 50–60HP Model

Locate the nameplate/serial sticker on the transom clamp bracket (usually starboard side). It lists the model code, serial number, and shaft length.
Read the model code and suffix. For Yamaha 2‑Stroke: letters typically indicate trim/tilt and control type; the suffix often denotes year revision. Shaft length is commonly M/S (15) or L (20).
Confirm it’s a 2‑Stroke inline 3‑cylinder platform (common for 50–60HP). Many models use carburetors and an oil‑injection tank (“Precision Blend”) rather than premix.
Match horsepower and configuration on the parts collection page before ordering. If unsure, note the full model code and serial number.

Platform Overview

Yamaha 2‑Stroke 50–60HP Inline‑3

Feature	Description
Configuration	Inline‑3, carbureted 2‑Stroke with mechanical oil injection on many models
Common Models	50HP and 60HP 2‑Stroke variants (tiller/remote, short/long shaft). Examples include model codes in the C/60 series with trim/shaft suffixes.
Advantages	Lightweight package, strong holeshot, simple maintenance, broad parts availability.
Notes	Many 50/60HP 2‑Stroke models share cooling, ignition, and gearcase components. Verify year and control/shaft options for best compatibility.

Routine Maintenance & Service Parts

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

Item	Interval*	Remarks	Parts Link
Gear oil (lower unit)	Every 100 hours or annually	Check for water/milkiness; replace gaskets and inspect seals if contamination is found.	Yamaha Outboard Parts
Spark plugs	Inspect every 50 hours; replace ~100 hours	Use correct heat range and gap; replace sooner for fouling or hard starting.	Spark Plugs
Inline fuel filter / water separator	Inspect every 50 hours; replace 100–200 hours	Replace more often with ethanol fuel or if debris/water is present.	Fuel Filters
Water pump impeller/kit	Every 2–3 seasons or 200 hours	Replace sooner for weak telltale, overheat alarms, or sandy/silty operation.	Yamaha Water Pump Repair Kits
Thermostat	Inspect annually; replace 2–3 years	Stuck or corroded thermostats affect warm‑up and overheat protection.	Yamaha Outboard Parts
Anodes (internal & external)	Inspect every 50 hours; replace when 50% depleted	Use alloy suited to your water (salt/brackish/fresh) to limit corrosion.	Yamaha Anodes
Oil‑injection system (hoses, screens, pump check)	Inspect every 100 hours; service 200 hours	Verify tank level sensor, line integrity, and pump linkage setting; premix only if specified.	Hoses
Lower unit seals (if water intrusion found)	As needed (after pressure test)	If gear oil shows water, pressure‑test and reseal to prevent gear damage.	Yamaha Lower Unit Seal Kits

Frequently Used Parts Categories

Routine Service Kits – Yamaha Service & Maintenance Kits
Cooling System – Yamaha Water Pump Repair Kits
Fuel System – Fuel Filters and Carburetor
Ignition / Electrical – Electrical Items and Yamaha Starters
Lower Unit & Propulsion – Yamaha Lower Unit Seal Kits and Yamaha Propellers
Corrosion Protection – Yamaha Anodes
Misc. Service – Hoses and Yamaha Outboard Parts

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak telltale or overheat alarm	Inspect intake screens, replace impeller, test thermostat; verify good water flow at idle.	Water pump kit, thermostat, intake screen, anodes
Hard starting / rough idle	Check spark plug condition/gap, fresh fuel, fuel filter, and clean carb jets; confirm choke/enrichment operation.	Spark plugs, fuel filter, carburetor rebuild kit
Poor acceleration / power loss	Inspect prop for damage/cavitation, verify compression and timing, confirm fuel delivery and clean air path.	Propeller, fuel pump, spark plugs, carburetor kit
Excessive smoke (2‑Stroke)	Verify oil‑injection pump setting and linkage; ensure correct oil type; check for stuck choke or rich idle mixture.	Hoses/lines, choke components, carburetor adjustment parts
Gearcase noise or metal in gear oil	Check oil level/condition, perform pressure test, inspect prop shaft and seals for fishing‑line damage.	Lower unit seal kit, prop shaft seals, drain/fill gaskets

FAQs

Are parts interchangeable between different years or platforms?

Many 50–60HP 2‑Stroke models share components, especially within the same generation, but ignition, carburetion, and gearcase details can vary. Always match your exact model code and serial number before ordering.

When should the water pump impeller be replaced?

For typical recreational use, replace every 2–3 seasons or ~200 hours. Boats run in sandy or silty water, or those showing a weak telltale, should service the pump sooner.

How often should the lower unit gear oil be changed?

Change every 100 hours or annually. If the drained oil appears milky (water intrusion), pressure‑test the gearcase and replace seals as needed before further operation.

What information helps confirm part compatibility?

Provide the full Yamaha model code, serial number, shaft length, and any kit/part already installed. Photos of the nameplate and the part area on the engine are especially helpful.

Ready to find parts for your Yamaha 2‑Stroke 50–60HP? Browse the main Yamaha collection by horsepower, year, and model.

Shop Yamaha Outboard Parts

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.