Yamaha 2-Stroke 60-90HP Outboard Engine Parts

(3 products)

This page supports Yamaha 2-Stroke 60–90HP 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 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.

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How to Identify Your 60–90HP Model

Locate the ID plate: On most Yamaha 2‑stroke outboards, the model/serial plate is on the transom clamp bracket (starboard side) or the swivel bracket. Record the full model code and serial number.
Read the model code and suffix: Yamaha codes often include a family/model (e.g., C60/70/90), shaft length (L = 20 in, X = 25 in), control/trim options (T = power trim/tilt, R = remote), and a year code suffix. Example formats include 70TLR, 90TLR. Always match the full code when selecting parts.
Platform hints: Many 60/70 and 75/85/90 models are inline‑3 carbureted 2‑strokes. Cowling decals like “Precision Blend” indicate oil‑injection systems rather than pre‑mix.
2‑Stroke specifics: If oil‑injected, confirm the under‑cowl reservoir and remote boat‑mounted oil tank type. If pre‑mix, verify the required fuel/oil ratio shown on the engine or in your manual.

Platform Overview

60–70HP Inline‑3 2‑Stroke (Carbureted)

Feature	Description
Configuration	Inline‑3, carbureted 2‑stroke with mechanical oil injection on many models (“Precision Blend”) or pre‑mix on select variants.
Common Models	Examples include C60 and 70 series (e.g., 70TLR). Exact parts depend on full model code and year suffix.
Advantages	Light weight for class, strong mid‑range torque, simple serviceability.
Notes	Cooling, ignition, and many wear items are shared across years, but jetting, electrics, and gear ratios can vary. Verify by model code before ordering.

75–90HP Inline‑3 2‑Stroke (Carbureted)

Feature	Description
Configuration	Inline‑3, carbureted 2‑stroke, commonly oil‑injected; shares architecture with 60–70HP family but often in a larger displacement group.
Common Models	Examples include 75/85/90 series (e.g., 90TLR). Confirm exact version with the full model code.
Advantages	Good hole‑shot and top‑end for the weight, straightforward carb and ignition service.
Notes	Many cooling and ignition parts cross over with 60–70HP models, but carbs, jetting, and props differ. Match by model code and shaft length (L/X).

Routine Maintenance & Service Parts

Intervals below are general guidelines for Yamaha 2‑stroke outboards. Always follow your engine’s official service manual and adjust for heavy use, sandy/silty water, or storage conditions.

Item	Interval*	Remarks	Parts Link
Lower unit gear oil	Every 100 hours or annually	Change sooner if water contamination is suspected; replace seals if leakage is found.	Yamaha Lower Unit Seal Kits
Spark plugs	100 hours or annually	Inspect gap and color; replace if fouled or worn. Use plugs specified for your exact model.	Spark Plugs
Fuel filter / water separator	Inspect every 50 hours; replace 100 hours or as needed	Keep water and debris out of carbs; poor filtration causes lean conditions and power loss.	Fuel Filters
Water pump impeller / kit	Every 2 seasons (12–24 months) or sooner in sandy water	Weak tell‑tale flow or overheat alarms often trace to a worn impeller or housing.	Yamaha Water Pump Repair Kits
Anodes (internal/external)	Inspect every 50 hours; replace when 50% consumed	Protects against corrosion; use the correct material (aluminum/magnesium/zinc) for your water.	Yamaha Anodes
Oil injection system check (if equipped)	100 hours or annually	Verify pump output, alarms, and that oil lines/filters are clean. If deleted, follow correct pre‑mix ratio.	Hoses (Oil Lines)
Propeller & hardware inspection	Every 50 hours; remove annually	Check for nicks/bent blades, fishing line behind prop, and hub condition; service cotter/nut.	Yamaha Propellers

Frequently Used Parts Categories

Routine Service – Yamaha Service & Maintenance Kits
Cooling System – Yamaha Water Pump Repair Kits
Fuel System – Fuel Filters and Fuel Pumps
Ignition / Electrical – Electrical Items and Starters
Gearcase / Sealing – Yamaha Lower Unit Seal Kits
Propellers & Hardware – Yamaha Propellers
Corrosion Protection – Yamaha Anodes

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak tell‑tale stream or overheat alarm	Inspect intake screens for debris; verify thermostat operation; check impeller condition and housing wear.	Water pump kit, thermostat, intake screens
Poor acceleration or power loss	Check prop for damage/slip; replace fuel filter; verify carb cleanliness and float settings; inspect plug color/compression.	Propeller, fuel filter, carb service parts, spark plugs
Hard starting or rough idle	Confirm choke/enrichment function; check for air leaks in fuel lines; drain stale fuel; test spark on all cylinders.	Fuel lines/hoses, primer bulb, spark plugs, carb kits
Excessive smoke (2‑stroke)	Verify correct oil ratio (pre‑mix) or oil pump setting (injected); ensure thermostat is closing; avoid extended no‑load idling.	Thermostat, oil lines, oil pump service, spark plugs
Gearcase noise or metal in gear oil	Check oil level/condition; look for water intrusion (milky oil); perform pressure/vacuum test to locate leaking seals.	Seal kit, shims/bearings, prop shaft seals

FAQs

Are parts interchangeable between different years or between 60–70 and 75–90 models?

Many cooling and ignition items interchange, but carbs, jetting, electrics, and gear ratios often differ by model year and platform. Match parts to your full model code (including shaft length and suffix) for best results.

When should I replace the water pump impeller?

As a rule of thumb, replace the impeller every 2 seasons, or sooner if you notice weak tell‑tale flow, overheating, or you run in sandy/silty water. A complete kit (impeller, key, cup, plate, gaskets) restores proper cooling performance.

How often should I change the lower unit gear oil?

Service the gear oil every 100 hours or annually. If the oil appears milky, has metal debris, or smells burned, service immediately and pressure‑test the gearcase to check for leaking seals.

What information do you need to confirm part compatibility?

Please provide the complete Yamaha model code and serial number from the nameplate, shaft length (L/X), control type (tiller/remote), and any known year range. Photos of the nameplate and the part you’re replacing help us verify compatibility.

Ready to find parts by horsepower, year, and model? Start in our main Yamaha collection and refine with the Filter & Sort tools.

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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.