How to fix high engine speed on my TOHATSU MFS 25d?
If the engine speed is very high on your TOHATSU Outboard Motor, causing the high-speed ESG to operate, check and adjust the valve timing. Adjust the valve clearance. Inspect and replace worn components such as the piston, piston ring, and/or cylinder. Clean the combustion chamber if there is too much carbon deposition. Tighten the spark plug if it is loose.
What to do if TOHATSU MFS 25d engine speed is very low?
If the engine speed is very low on your TOHATSU Outboard Motor, causing the low-speed ESG to operate, charge the battery and check connections for corrosion if the battery is dead, has loose connections, is corroded, or has a low electrolyte level. Check the water pump and ensure it is working properly if cooling water is lacking due to a defective or clogged water pump.
What to do if my TOHATSU MFS 25d engine stalls immediately after starting?
If your TOHATSU Outboard Motor engine stalls immediately after starting, inspect and repair any defective wiring connections. Install the specified spark plugs. Clean or replace the spark plug if it is contaminated. Check the ignition system for faults if there are no sparks or a weak spark. Repair or replace the stop switch if it is short-circuited. Ensure the stop switch lock is properly installed. Replace the blown fuse.
Why is my TOHATSU MFS 25d engine overheating?
If your TOHATSU Outboard Motor is overheating, check the water pump for defects or clogs. Test and replace the thermostat if its operation is defective.
Why my boat cannot run at high speed with TOHATSU MFS 25d Outboard Motor?
If your boat cannot run at high speed with the TOHATSU Outboard Motor, ensure you are using the correct propeller. If the propeller is damaged or deformed, replace it. Also, adjust the thrust rod position if it is incorrect.
General| Power Output | 25 HP |
|---|---|
| Fuel Induction | EFI (Electronic Fuel Injection) |
| Gear Ratio | 2.08:1 |
| Full Throttle RPM Range | 5000 - 6000 RPM |
| Gear Shift | F-N-R |
| Displacement | 526 cc |
| Starting | Electric |
| Alternator Output | 12V |
| Shaft Length | 20 in |
| Steering | Tiller / Remote |
Explains the importance of the warranty card for ownership and registration.
Explains the location and importance of the serial number for warranty and inquiries.
Defines the significance of DANGER, WARNING, CAUTION, and Note labels for safe operation.
Highlights the operator's responsibility for safety and following regulations.
Provides a feature comparison table for MFS25D and MFS30D models.
Identifies various parts of the MF model outboard motor with corresponding numbers.
Details how to mount the outboard motor onto the boat safely and correctly.
Gives instructions and warnings on safe handling and filling of fuel.
Explains the break-in procedure and schedule for new outboard motors.
Covers oil level checking, fuel system connection, and feeding fuel.
Provides detailed instructions for starting the outboard motor safely.
Provides instructions for emergency starting of the outboard motor.
Explains the procedure and importance of warming up the engine.
Provides instructions and warnings for shifting gears and accelerating.
Explains how to safely stop the outboard motor.
Provides instructions on how to steer the outboard motor.
Explains how to adjust the trim angle for optimal performance and safety.
Provides instructions for tilting the outboard motor up and down.
Details steps for safely removing and carrying the outboard motor.
Explains how to adjust steering, throttle, and remote control friction.
Explains how to adjust the trim tab for steering correction.
Emphasizes the importance of daily and periodic maintenance for optimal condition.
Lists checks to perform before and after using the outboard motor.
Outlines periodic inspection intervals and procedures for various motor components.
Provides detailed instructions for changing engine oil and replacing the oil filter.
Explains how to clean fuel filters and the fuel tank.
Provides instructions for replacing the gear oil.
Details the procedure for replacing the propeller.
Provides instructions for replacing spark plugs.
Provides instructions for preparing the outboard motor for off-season storage.
Lists checks to perform before using the engine after off-season storage.
Lists possible causes and remedies for fuel and lubrication system problems.
Lists the tools and spare parts included with the outboard motor.
Provides a table of propeller sizes recommended for different boat types and engine RPMs.
Explains emission sources and control systems like ignition timing and fuel injection.
Explains the California Air Resources Board (CARB) star label.
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