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TOHATSU MD 50B2 - User Manual

TOHATSU MD 50B2
101 pages
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OWNERS
MANUAL
トーハツ船外機オーナーズマニュアル
MD B
MD B
MD C
MD C
MD A
OB No.--AH
Original instructions
MD B

Other manuals for TOHATSU MD 50B2

Questions and Answers

  • A
    Amanda EllisSep 9, 2025
    Why my TOHATSU Outboard Motor battery will not hold charge?
    • K
      kevinpotterSep 9, 2025
      If the battery of your TOHATSU Outboard Motor will not hold a charge, you should first ensure that the battery is fully charged. Also, check the battery's overall health, the connections at the terminals, and the electrolyte levels to ensure they are adequate.
  • R
    Rachel JohnsonAug 23, 2025
    How to fix a TOHATSU MD 50B2 that is difficult to start?
    • J
      jmurrayAug 23, 2025
      If your TOHATSU Outboard Motor engine is difficult to start, begin by checking the fuel level and ensuring the fuel system connections are correct. Inspect for air leaks in the fuel line and replace any deformed or damaged fuel pipes. Make sure the air vent on the fuel tank cap is open and that the fuel filter or fuel pump isn't clogged with dust; clean or replace them if necessary. Use the recommended gasoline and ensure proper priming. Check compression connections, use specified spark plugs, and clean them if they have dirt or carbon deposits. If there's no sparking or poor sparking, inspect the ignition system and adjust the throttle aperture if it's insufficient.
  • N
    Nicole PattersonAug 25, 2025
    Why is my TOHATSU MD 50B2 Outboard Motor difficult to start?
    • M
      Mary JacksonAug 25, 2025
      If your TOHATSU Outboard Motor is difficult to start, several factors could be the cause. Start by checking if the fuel tank is empty and refill if needed. Ensure that the fuel system connections are correctly connected and inspect the fuel line for any air leaks. Also, check for deformed or damaged fuel pipes and replace them if necessary. Make sure the air vent on the fuel tank cap is open, and inspect the fuel filter and pump for clogs, cleaning or replacing them as needed. Verify you are using the recommended type of gasoline and that the primer bulb is functioning correctly. Finally, check the compression system for poor connections, replace spark plugs with specified ones, check spark plugs for dirt or carbon deposits, and inspect the ignition system for failures.
  • J
    John WhiteAug 27, 2025
    What to do if my TOHATSU Outboard Motor is difficult to start?
    • S
      scottsmithAug 27, 2025
      If your TOHATSU Outboard Motor is difficult to start, the fuel tank might be empty. Ensure that the fuel tank is filled.
  • B
    bartonronaldAug 28, 2025
    How to fix a difficult to start TOHATSU MD 50B2 Outboard Motor?
    • C
      Cole LongAug 28, 2025
      If your TOHATSU Outboard Motor is difficult to start, the fuel system might be incorrectly connected. Ensure that the fuel system is correctly connected.
  • C
    Christian LeeAug 29, 2025
    What causes a TOHATSU MD 50B2 to be difficult to start?
    • B
      Brandy MarshAug 29, 2025
      If your TOHATSU Outboard Motor is difficult to start, the fuel pipe may be deformed or damaged. Inspect and replace if necessary.
  • C
    Cristian MccartySep 18, 2025
    Why am I experiencing boat speed loss with my TOHATSU MD 50B2 Outboard Motor?
    • R
      Robin WashingtonSep 18, 2025
      If you're experiencing boat speed loss with your TOHATSU Outboard Motor, it could be due to insufficient throttle aperture.
  • R
    reidlauraSep 22, 2025
    What to do if there is no sparking or poor sparking in my TOHATSU MD 50B2 Outboard Motor?
    • R
      Roy MurphySep 22, 2025
      If your TOHATSU Outboard Motor is difficult to start, there may be no sparking or poor sparking due to a failure in a component of the ignition system. Check the ignition system.
  • C
    Clifford GrahamSep 8, 2025
    What to do if the starter motor of my TOHATSU MD 50B2 will not crank?
    • S
      Sandra ChangSep 8, 2025
      If the starter motor on your TOHATSU Outboard Motor won't crank, begin by ensuring the lock plate is properly positioned into the stop switch. Next, check the wiring and connections to the starter motor for any wrong wiring, disconnections, or poor connections. Lastly, test the starter motor and starter solenoid, and replace them if they are defective.
  • T
    turnermariaSep 4, 2025
    Why TOHATSU Outboard Motor starter motor will not crank?
    • K
      Kathryn VelasquezSep 4, 2025
      If the starter motor of your TOHATSU Outboard Motor won't crank, check the starter motor and solenoid for faulty operation.

Summary

Owner Registration and Initial Checks

Owner Registration and Identification

Process for registering the outboard motor and identifying the owner for warranty.

Pre-Delivery Inspection Checklist

Steps to ensure the outboard motor is checked by a dealer before delivery.

Serial Number Recording

Recording Outboard Motor Serial Number

Instructions on where to find and record the motor's serial number.

Hazard Notification System

Understanding DANGER, WARNING, CAUTION, and Note Symbols

Explanation of hazard symbols used throughout the manual for safety.

General Safety Information

Safe Operation and Emergency Stop Procedures

Guidelines for safe boat operation and use of the emergency stop switch.

Personal Safety Gear and Hazard Awareness

Importance of PFDs and awareness of hazards like carbon monoxide and gasoline.

Servicing, Parts, and Lubricant Recommendations

Guidance on using genuine parts, recommended lubricants, and authorized service.

Outboard Motor Specifications

Model Feature Comparison Chart

Table comparing features across different outboard motor models.

Model Name Interpretation Guide

Explanation of the meaning of characters in the model name.

Detailed Technical Specifications by Model

Comprehensive specifications for each outboard motor model.

Component Identification

Outboard Motor Parts Diagrams

Illustrated breakdown of outboard motor components for various models.

Remote Control System Components

Identification of parts for the remote control box and fuel tank.

Label Locations and Identification

Warning and Information Label Placement

Visual guide showing the location of various warning and identification labels.

Outboard Motor Installation Procedures

Motor Mounting and Transom Fitment

Instructions for securely mounting the outboard motor onto the boat's transom.

System Installations (RC, Battery, Propeller)

Procedures for installing remote control, battery, and propeller systems.

Pre-Operation Checks and Preparations

Fuel Handling, Rating, and Filling

Guidance on using the correct fuel, handling, and filling the fuel tank.

Engine Oil and Break-In Procedures

Instructions for engine oil selection, filling, and the initial break-in period.

Warning System Check and Operation

Information on the motor's warning indicators and system checks.

Operating the Outboard Motor

Starting Procedures and Oil Feeding

Steps for starting the engine, including oil priming.

Fueling and Engine Speed Control

Procedures for fueling and managing engine speed during operation.

Shifting and Speed Control Operations

Guidance on shifting gears, acceleration, and stopping the engine.

Shallow Water Operation Techniques

How to operate the motor safely in shallow water conditions.

Steering Operations

Tiller Handle and Remote Control Steering

Instructions for steering using different control types.

Trim Angle Adjustments

Proper Trim Angle and Tilt Control

Guidance on setting the optimal trim angle and using tilt controls.

Motor Removal and Transportation

Removing, Carrying, and Trailering Procedures

Steps for safely removing, transporting, and trailering the outboard motor.

Adjustments and Settings

Friction and Trim Tab Adjustments

Procedures for adjusting steering/throttle friction and trim tabs.

Inspection and Maintenance Schedule

Daily and Periodic Inspection Procedures

Checklist for regular checks and inspections of the outboard motor.

Fluid Maintenance and Component Replacements

Guidelines for changing oil, gear oil, and replacing parts like plugs and anodes.

Storage and Seasonal Maintenance

Steps for preparing the motor for off-season storage and pre-season checks.

Troubleshooting Common Issues

Problem Diagnosis and Remedies

Guide to identifying and resolving common engine and operational problems.

Included Accessories and Parts

Tools and Spare Parts List

Inventory of tools and spare parts provided with the outboard motor.

Propeller Selection Guide

Choosing the Right Propeller

Recommendations for selecting the correct propeller based on boat and load.

TOHATSU MD 50B2 Specifications

General IconGeneral
Engine Type2-Stroke
Fuel SystemCarburetor
Starting SystemManual
Gear Ratio2.08:1
Fuel TypeGasoline
Oil Type2-Stroke Oil
Gear ShiftF-N-R
Shaft Length20 in
WOT Range5, 000 - 6, 000 rpm
Power Output50 hp (36.8 kW)

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