Yamaha 4-Stroke 115HP Outboard Marine Engine Parts

(79 products)

Dedicated to Yamaha 4‑Stroke 115HP outboard engines, this page helps you find compatible parts and practical service information. Below youb9ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Yamaha collection anytime. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection page you can use the Filter & Sort controls to narrow results by horsepower, year range, and part category/section.

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How to Identify Your 115HP Model

Locate the nameplate/ID label on the transom bracket or swivel bracket. It lists the model code, serial number, and shaft length.
Read the model code and suffix: for example, F115TLR. F denotes 4-stroke, 115 is horsepower, and the suffix often indicates shaft length (S/L/X), control/trim options, and a year/region code.
Verify itb9s a 4-stroke by the presence of an engine oil fill and spin-on oil filter under the cowling (no oil mixing required).
If your cowling or label uses codes like F115, itb9s typically an inline-4 EFI platform used across many year ranges; exact parts can vary by year and suffix.

Platform Overview

Yamaha F115 Inline-4 EFI 4-Stroke

Feature	Description
Configuration	Inline-4, EFI 4-stroke outboard, electric start, power trim/tilt on most models.
Common Models	Examples include F115 with suffixes such as F115TLR (shaft length/control/year codes vary by market and year).
Advantages	Good fuel economy, smooth mid-range torque, wide parts availability, and proven reliability for fishing and cruising.
Notes	Parts compatibility can vary by year and suffix; verify against the exact model/serial. Routine items (filters, plugs, anodes, water pump kits) are serviceable with common tools.

Routine Maintenance & Service Parts

Intervals below are general guidelines for Yamaha 4-stroke 115HP outboards. Always follow your modelb9s official service manual and local operating conditions.

Item	Interval*	Remarks	Parts Link
Engine oil & filter	100 hours or annually	Use marine 4-stroke oil meeting Yamaha specs; replace the spin-on filter each service.	Oil Filters
Gear oil (lower unit)	100 hours or annually	Inspect for water intrusion/metal; replace drain/fill gaskets; reseal if leaks are found.	Yamaha Lower Unit Seal Kits
Spark plugs	100 hours or annually	Inspect gap/condition; replace if fouled, worn, or at interval.	Spark Plugs
Fuel filter / water separator	100 hours or annually	Drain water and replace elements to protect injectors and HP pump.	Fuel Filters
Water pump impeller/kit	22 seasons or 200 hours (inspect annually)	Replace sooner if stream is weak, temps run hot, or after sandy/silty use.	Yamaha Water Pump Repair Kits
Anodes (internal & external)	Inspect every 50 hours; replace when 50% depleted	Choose zinc/aluminum/magnesium by water type; keep clean and well bonded.	Yamaha Anodes
Propeller & hub	Inspect each outing; service at annual	Check for dings and spun hub; remove to grease splines and clear fishing line.	Yamaha Propellers

Frequently Used Parts Categories

Routine Service: Yamaha Service & Maintenance Kits
Cooling System: Yamaha Water Pump Repair Kits
Fuel System: Fuel Filters
Ignition / Electrical: Electrical Items
Starting System: Yamaha Starters
Corrosion Protection: Yamaha Anodes
Lower Unit / Gearcase: Yamaha Lower Unit Seal Kits

Common Symptoms & Quick Checks

Symptom	Check First	Related Parts
Weak telltale / overheat alarm	Inspect intake screens for blockage, thermostat operation, and impeller condition.	Water pump kit, intake screen, thermostat, gaskets
Poor acceleration / power loss	Check propeller damage or wrong pitch, fuel filter restriction, and stale fuel.	Propeller, fuel filters, spark plugs
Hard starting / rough idle	Verify battery charge, clean connections, plug condition, and water separator.	Spark plugs, battery cables, fuel/water separator, starter
Gearcase noise / metal in oil	Change gear oil, inspect for water intrusion, check prop shaft for line damage.	Lower unit seal kit, drain/fill gaskets, propeller hub

FAQs

Are parts interchangeable between different years or platforms?

Many routine items are similar across F115 variants, but changes by year and suffix can affect fit. Always confirm against your exact model code and serial, and compare component diagrams when available.

When should the impeller be replaced?

Inspect annually and replace every 22 seasons or about 200 hours. Replace sooner after sandy or silty operation, weak telltale, or overheating events.

How often should lower unit gear oil be changed?

Typically every 100 hours or annually. If water or metal is found in the oil, investigate seals and bearings and service the gearcase before further use.

What information helps confirm compatibility?

Provide the full model code (e.g., F115 with all suffix letters), serial number, shaft length, and any identifiable year or region code. A photo of the nameplate and the part youb9re replacing is ideal.

Ready to find parts by horsepower, year, and model? Browse the main Yamaha collection and use Filter & Sort to dial in the exact components for your F115.

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If youb9re unsure about your model, send us a photo of the nameplate and the part you need and web9ll help verify compatibility.