TOHATSU MD 40B2 - User Manual

Questions and Answers

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Matthew PetersonAug 3, 2025
Why is my TOHATSU MD 40B2 Outboard Motor difficult to start?
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  rhonda13Aug 3, 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.
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hreeseAug 11, 2025
What to do if my TOHATSU MD 40B2 engine runs erratically?
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  Anthony HartAug 11, 2025
  If your TOHATSU Outboard Motor engine runs erratically, it could be due to several reasons. First, check for blockages in the cooling system that might be causing insufficient cooling water flow. Also, propeller cavitation can cause erratic engine performance, so adjust the boat speed or trim settings. Ensure that you've selected the appropriate propeller for your engine, and inspect it for any damage or bending, replacing it if necessary. An unbalanced load or overload can also cause this issue, so redistribute the load in the boat. Check if the transom is at the correct height and adjust if needed. Clean and repair the bottom of the boat if it's stained or damaged. Finally, ensure the throttle aperture is sufficient.
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Lindsey ForbesAug 19, 2025
What to do if the starter motor of my TOHATSU MD 40B2 Outboard Motor will not crank?
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  Charles BallAug 19, 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.
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christopher18Aug 26, 2025
Why my TOHATSU MD 40B2 Outboard Motor battery will not hold charge?
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  Pamela GrahamAug 26, 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.