TOHATSU MFS 6C - User Manual

Other manuals for TOHATSU MFS 6C

Questions and Answers

R
Robert RobinsonAug 22, 2025
Why is my TOHATSU MFS 6C Outboard Motor engine failing to start?
- T
  taylordebbieAug 22, 2025
  If your TOHATSU Outboard Motor engine won't start, several factors could be at play. Start by ensuring the fuel tank isn't empty and that the fuel system is correctly connected. Check for air in the fuel line, and replace any deformed or damaged fuel hoses. Make sure the air vent on the fuel tank is open. Clear any clogs in the fuel filter, fuel pump, or carburetor. Other potential issues include low engine compression (check the engine compression), a weak or absent spark (check the ignition system), a short circuit in the engine stop switch (inspect the switch), incorrect ignition timing (adjust the timing), or disconnected wires/loose ground connections (check all connections).
R
Rachel OchoaSep 4, 2025
What to do if TOHATSU MFS 6C engine starts but stops soon?
- N
  nwilsonSep 4, 2025
  If your TOHATSU Outboard Motor starts but stops shortly after, there might be a problem with the fuel system. Begin by checking and correcting the fuel system connections. Air entering the fuel line can cause the engine to stop, so secure the fuel line to prevent air leaks. A deformed or damaged fuel hose should be replaced. Ensure the air vent on the fuel tank is open. Lastly, a clogged fuel filter, fuel pump, or carburetor could be the issue; clean or replace these components.
V
Vanessa CastilloSep 2, 2025
How to fix a TOHATSU Outboard Motor engine that is failing to start?
- L
  Larry LowerySep 3, 2025
  If your TOHATSU Outboard Motor engine won't start, several issues could be the cause. First, ensure the fuel tank isn't empty and fill it if necessary. Next, check all fuel system connections to make sure they are correctly connected. Air in the fuel line can also prevent starting, so secure the fuel line to prevent air leaks. Inspect the fuel hose for any deformities or damage, and replace it if needed. Verify that the air vent on the fuel tank is open. Finally, a clogged fuel filter, fuel pump, or carburetor can prevent the engine from starting; clean or replace these components as necessary.
J
Jennifer WilliamsSep 1, 2025
What to do if TOHATSU MFS 6C starts but stops soon after?
- D
  Denise AlvaradoSep 1, 2025
  If your TOHATSU Outboard Motor starts but stops quickly, there could be a few reasons. First, verify the fuel system is correctly connected and inspect the fuel line for any air leaks, repairing them as needed. Replace any fuel hose that is deformed or damaged. Ensure the air vent on the fuel tank is open. Check for and clear any clogs in the fuel filter, fuel pump, or carburetor. Also, ensure you are using the correct engine oil and that the carburetor is properly adjusted. Finally, inspect the spark plug for dirt or soot, and clean or replace it if necessary. Incorrect ignition timing may also be the cause, so adjust the ignition timing if needed.
B
burtonstephenAug 31, 2025
What to do if there is low oil level in my TOHATSU Outboard Motor?
- R
  Robert DukeAug 31, 2025
  If the oil level is low, add oil to the proper level.
D
Dr. Joseph HenryAug 29, 2025
What causes poor acceleration in a TOHATSU Outboard Motor?
- D
  David McclureAug 29, 2025
  Poor acceleration in your TOHATSU Outboard Motor can stem from using a spark plug other than the specified one (replace it), dirt or soot on the spark plug (clean or replace it), a weak or absent spark (check the ignition system), or incorrect ignition timing (adjust the timing).
T
Tyrone ArcherAug 27, 2025
What to do if my TOHATSU MFS 6C engine starts but stops soon after?
- R
  rebecca78Aug 28, 2025
  If your TOHATSU Outboard Motor starts but stops soon after, it might be due to several reasons. First, check if the fuel tank is empty and fill it if needed. An incorrect connection of the fuel system could also be the problem, so ensure it's correctly connected. Another possibility is air entering the fuel line, which needs to be removed. Make sure the air vent on the fuel tank is open. A clogged fuel filter, fuel pump, or carburetor could also cause this, requiring cleaning or replacement. Using improper engine oil or gasoline can also lead to this issue, so use the specified oil and recommended gasoline. Lastly, an excessive fuel supply or poor carburetor adjustment might be the cause; adjust them as necessary.
M
Megan MartinezAug 27, 2025
How to improve poor idling on TOHATSU MFS 6C Outboard Motor?
- A
  Alyssa StricklandAug 27, 2025
  If your TOHATSU Outboard Motor is idling poorly, it might be due to using improper engine oil or gasoline; use the recommended oil and gasoline. An excessive fuel supply or poor carburetor adjustment can also cause poor idling, so adjust the fuel supply and carburetor accordingly.
K
Kimberly HopkinsAug 25, 2025
What to do if TOHATSU MFS 6C Outboard Motor oil level is low?
- J
  Jeffrey TurnerAug 26, 2025
  If the oil level is low in your TOHATSU Outboard Motor, refill the engine oil to the correct level.
D
Daniel ChambersAug 23, 2025
Why is my TOHATSU MFS 6C engine falling to start?
- M
  Michael MitchellAug 23, 2025
  Several factors can prevent your TOHATSU Outboard Motor engine from starting. These include an empty fuel tank (fill it), incorrect fuel system connections (check and correct them), air entering the fuel line (inspect and fix leaks), a deformed or damaged fuel hose (replace it), a closed air vent on the fuel tank (open it), or a clogged fuel filter, fuel pump, or carburetor (clean or replace them).

TOHATSU MFS 6C Specifications

General

Cylinders	1
Max Output	6 HP
Fuel System	Carburetor
Starting System	Manual
Gear Ratio	2.08:1
Propeller	3-Blade
Output	6 HP
Control Type	Tiller
Gear Shift	F-N-R
Fuel Type	Gasoline

Summary

Your Tohatsu Outboard Motor

To You, Our Customer

Welcome message and overview from the manufacturer.

Owner Registration and Identification

Importance of registering the product for warranty and identification purposes.

Pre-Delivery Check

Ensures the product is checked by a dealer before customer delivery.

Serial Number

Locating and Recording Your Serial Number

Guidance on finding and recording the outboard motor's serial number for inquiries.

Safety Information Symbols

Understanding DANGER, WARNING, CAUTION, and Note Symbols

Explains the meaning of safety alert symbols used throughout the manual.

General Safety Information

Safe Boat Operation and Personal Safety

Responsibilities for safe boating, including awareness of people in water and PFD usage.

Emergency Stop Switch Usage

How the emergency stop switch works and its importance for preventing propeller injuries.

Servicing, Parts, and Lubricants Recommendations

Emphasizes using authorized shops, genuine parts, and recommended lubricants.

Hazard Warnings: Carbon Monoxide and Gasoline

Alerts to the dangers of carbon monoxide and flammable gasoline.

Specifications

Model Feature Overview

Details features and options for different outboard motor models.

Model Name Example and Breakdown

Explains the naming convention used for outboard motor models.

Parts Identification

Outboard Motor Components Diagram

Illustrates and labels the main parts of the outboard motor (4C, 5C, 6C models).

Remote Control Box and Fuel Tank Parts

Identifies key components of the remote control system and fuel tank assembly.

Label Locations

Warning Label Locations Overview

Shows the general placement of warning labels on the outboard motor.

Specific Warning Label Explanations

Details the meaning and location of various critical warning labels.

Gasoline and Fuel Tank Cap Warning Labels

Highlights warnings related to gasoline handling and fuel tank cap operation.

ECI (Emission Control Information) Decal Locations

Identifies the placement and purpose of emission control decals.

Installation

Mounting the Outboard Motor on Boat

Step-by-step guide for securely mounting the outboard motor onto the boat transom.

Mounting Bolts and Altitude Adjustment Kit

Information on mounting bolts and when a high altitude kit may be necessary.

Remote Control Device and Battery Installation

Instructions for installing the remote control system and connecting the battery.

Pre-Operating Preparations

Fuel Handling, Rating, and Alcohol Content

Recommendations for fuel types, octane ratings, and handling of gasoline.

Fuel Filling Safety and Procedures

Critical safety instructions for filling the fuel tank, avoiding spills and fire hazards.

Fuel Tank Cap Operation and Venting

Procedures for opening and closing fuel tank caps, including venting.

Engine Oil Recommendation

Guidance on selecting the correct engine oil for performance and longevity.

Outboard Motor Break-In Procedure

Steps for properly breaking in a new outboard motor to ensure optimal performance.

Warning System and Lamp Location

Explains how the warning system operates and the location of the warning lamp.

Warning Indicators, Faults, and Remedies

Details common warning indicators, associated faults, and recommended remedies.

Engine Operation

Before Starting Engine Checks

Essential checks and procedures before starting the engine for the first time.

Fuel Feeding and Priming

How to properly feed fuel to the engine and prime the fuel system.

Starting the Engine Procedure

Step-by-step guide for starting the outboard motor, including safety precautions.

Warming Up the Engine

Importance and duration of warming up the engine for proper oil circulation.

Forward, Reverse, and Acceleration Operation

Safe procedures for shifting gears and controlling acceleration.

Shifting and Throttle Operation

Guidance on proper shifting and throttle operation to avoid damage.

Acceleration and Engine Stopping

Safe methods for acceleration control and stopping the engine.

Steering and Trim Angle Adjustment

How to steer the boat and adjust the trim angle for optimal performance.

Tilt Up and Down Operation

Instructions for tilting the outboard motor up and down for various situations.

Shallow Water Operation Guidance

How to operate the motor safely in shallow water conditions.

Removing and Carrying the Outboard Motor

Removing the Outboard Motor from Boat

Steps for safely detaching the outboard motor from the boat.

Carrying the Outboard Motor Safely

Guidelines for transporting the outboard motor, emphasizing stability and safety.

Trailering Procedures and Precautions

Instructions for securing the motor during boat trailering to prevent damage.

Adjustment

Steering Friction Adjustment

How to adjust steering friction for comfortable and safe handling.

Throttle Grip Friction Adjustment

Adjusting throttle grip friction for smooth control and preventing unwanted movement.

Inspection and Maintenance

Motor Care and Maintenance Overview

Importance of regular inspection and maintenance for optimal condition.

Daily Inspection Checklist

A list of essential checks to perform before and after each use.

Engine Oil Level Check and Replenishment

Procedures for checking and adding engine oil to maintain proper levels.

Washing and Flushing the Outboard Motor

How to clean the motor and flush cooling passages after use, especially in saltwater.

Fuse Replacement Procedure (SP Type)

Guide for safely replacing fuses in the outboard motor's electrical system.

Periodic Inspection Schedule and Procedures

Detailed maintenance schedule and procedures for regular servicing.

Engine Oil Replacement Steps

Step-by-step guide for changing the engine oil.

Fuel Filters and Fuel Tank Cleaning

Instructions for cleaning fuel filters and the fuel tank to ensure clean fuel delivery.

Gear Oil Replacement Procedure

Detailed steps for draining and refilling gear oil in the lower unit.

Propeller Replacement Guide

Instructions and safety precautions for removing and installing the propeller.

Spark Plug Replacement and Gapping

Guide for replacing spark plugs and setting the correct electrode gap.

Anode Replacement and Maintenance

Information on the sacrificial anode's role and when to replace it.

Off-Season Storage Instructions

Comprehensive guide on preparing the outboard motor for long-term storage.

Pre-Season Check Procedures

Steps to take before using the engine after it has been stored for off-season.

Submerged Outboard Motor Recovery

Emergency measures to take if the outboard motor becomes submerged.

Troubleshooting

Common Problems and Potential Causes

A diagnostic guide linking symptoms to possible causes and solutions.

Tool Kit and Spare Parts

Included Tools and Recommended Spare Parts

Lists the tools provided with the motor and essential spare parts for maintenance.

Propeller Table

Propeller Selection Guide

Helps in choosing the correct propeller size based on boat type and motor model.

Emission Control System Information

Emission Sources and Control Systems

Explains engine emissions and how the control system manages them.

Tampering and Modifications Warning

Alerts users about the legal implications of tampering with emission controls.

Emission Affecting Problems and Parts

Identifies issues affecting emissions and the importance of genuine replacement parts.

EPA Fuel Tank and Primer Hose Requirements

Details EPA regulations for fuel tanks and primer hose assemblies.

Emission Standards: Star Labels Explained

Describes the California Air Resources Board (CARB) star labeling system for emissions.

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