Welcome Aboard!

10% savings across all ranges sitewide for new customers · Terms apply

FLASHSALE26

Tohatsu 4-Stroke 175-250HP Outboard Marine Engine Parts

(1 products)

This page is tailored for Tohatsu 4-Stroke 175–250HP outboard engines. Use it to find compatible parts and practical service guidance. Below you’ll find maintenance tips, common replacement parts, and troubleshooting help. You can also browse our main Tohatsu collection for a wider selection. 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.

Browse All Tohatsu Parts

How to Identify Your 175–250HP Model

  • Locate the nameplate/serial label on the transom bracket or swivel bracket. Record the model code, serial number, and any suffix letters.
  • Decode suffix letters for shaft length (e.g., L/XL), steering and control type (tiller vs. remote), and factory options. These details affect cable kits, propeller hubs, and rigging parts.
  • Confirm it’s a 4-stroke by noting the oil fill cap and spin-on oil filter on the powerhead. 4-strokes also use engine oil and an oil filter at service.
  • Note control system (mechanical vs. electronic) and alternator output if listed; these influence control boxes/cables and charging components.

Engine Platform Overview

High-Power 4‑Stroke V6 (175–250HP)

Feature Description
Configuration Fuel‑injected 4‑stroke V6 outboard designed for offshore and heavy hulls; optimized for torque and efficiency.
Common Models 175HP, 200HP, 225HP, and 250HP 4‑stroke high‑power models (various shaft lengths and rigging options).
Advantages Strong mid‑range pull, lower fuel burn versus older 2‑strokes, and robust charging output for electronics.
Notes Rigging components (controls/cables), propeller hub style, and anode sets vary by shaft length and steering/control type—verify by model code.

Routine Maintenance & Service Parts

Intervals below are general guidelines for 4‑stroke outboards. Always follow the official service manual for your exact model, usage, and environment.

Item Interval* Remarks Parts Link
Engine oil & filter Every 100 hours or annually Use marine‑grade 4‑stroke oil; replace filter with each oil change. Oil Filters
Gear oil (lower unit) Every 100 hours or annually Inspect for metal and water intrusion; reseal if contamination is found. Tohatsu Lower Unit Seal Kits
Spark plugs Inspect 100 hours; replace 300 hours (or as needed) Check gap; replace sooner if misfire or hard starting occurs. Spark Plug
Fuel filter / water separator Inspect every 50–100 hours; replace at least annually Drain water separators regularly; keep spare elements aboard. Fuel Filters
Water pump impeller/kit Every 2–3 seasons (annually in sandy/silty water) Restore cooling performance; replace housing and key as needed. Tohatsu Water Pump Repair Kits
Anodes (internal & external) Inspect every 50 hours; replace when 50% depleted Use the correct alloy for your water (salt, brackish, or fresh). Anodes

Frequently Used Parts Categories

Common Symptoms & Quick Checks

Symptom Check First Related Parts
Weak tell‑tale or overheat alarm Intake screens for blockage; impeller condition; thermostat operation Water pump kit, intake screens, thermostat, housing seals
Hard starting or rough idle Battery voltage; fresh fuel; filter restriction; plug condition Fuel filter, spark plugs, starter/battery cables, injector cleaning
Poor acceleration or power loss Prop pitch/condition; fuel system pressure; air leaks; engine alarms Propeller, fuel pump, filters, ignition components
Gearcase noise or metal in gear oil Oil level/color; water contamination; seal condition; prop shaft runout Lower unit seal kit, gear lube, shims/bearings (as required)

FAQs

Are parts interchangeable across different years or platforms?

Some service items cross over, but rigging, anodes, and many cooling/electrical components vary by model year, shaft length, and control type. Verify using your exact model code and serial.

When should I replace the impeller?

Inspect annually and replace every 2–3 seasons. In sandy or silty water, replace yearly to maintain reliable cooling and reduce overheat risk.

How often should I change gear oil?

Typically every 100 hours or once per year. If you see milky oil or metal flakes, service immediately and consider resealing the gearcase.

What information helps confirm part compatibility?

Provide the model code, serial number, shaft length (L/XL), control type, and a clear photo of the nameplate. Noting current prop size and any aftermarket rigging also helps.

Ready to find parts by horsepower, year, and model? Browse our main Tohatsu collection to get started.

Shop Tohatsu 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.
View as
Back to top

Compare /5