Page 3
ENOM00006-A To You, Our Customer Thank you for selecting a TOHATSU outboard motor. You are now the proud owner of an excellent outboard motor that will service you for many years to come. This manual should be read in its entirety and the inspection and maintenance procedures described later in this manual should be followed carefully.
ENOM00005-A Serial Number In the space below, please record the outboard motor's serial number (indicated both on the bottom cowl and on the cylinder block). The serial number will be needed when order- ing parts, and when making technical or warranty inquiries. Serial Number: ENOF01101-0 ENOF01100-0...
Page 5
ENOM00007-0 NOTICE: DANGER/WARNING/CAUTION/Note Before installing, operating or otherwise handling your outboard motor, be sure to thor- oughly read and understand this Owner's Manual and carefully follow all of the instruc- tions. Of particular importance is information preceded by the words “DANGER,” “WARNING,”...
Page 8
INDEX 1 GENERAL SAFETY INFORMATION 2. SPECIFICATIONS 3. PARTS NAME 4. LABEL LOCATIONS 5. INSTALLATION 6. PRE-OPERATING PREPARATIONS 7. ENGINE OPERATION 8. REMOVING AND CARRYING THE OUTBOARD MOTOR 9. ADJUSTMENT 10. INSPECTION AND MAINTENANCE 11. TROUBLESHOOTING 12. TOOL KIT AND SPARE PARTS 13.
GENERAL SAFETY INFORMATION ENOM00009-0 SAFE OPERATION OF BOAT As the operator/driver of the boat, you are responsible for the safety of those aboard and those in other boat around yours, and for following local boating regulations. You should be thoroughly knowledgeable on how to correctly operate the boat, outboard motor, and accessories.
Page 10
GENERAL SAFETY INFORMATION ENOM00010-0 SERVICING, REPLACEMENT PARTS & LUBRICANTS We recommend that only an authorized service shop perform service or maintenance on this outboard motor. Be sure to use genuine parts, genuine lubricants, or recommended lubricants. ENOM00011-A MAINTENANCE As the owner of this outboard motor, you should be acquainted with correct maintenance procedures following maintenance section of this manual (See page 61).
SPECIFICATIONS ENOM00810-A MODEL FEATURE Model F25C F30C Type Transom heights Tiller Handle Multi-function tiller handle ( )*1 ( )*1 ( )*1 ( )*1 ( )*1 ( )*1 Remote Control Power Tilt Gas-assisted tilt Mnual tilt *1: Option ENOM00811-A MODEL NAME EXAMPLE F 30C EPTL Model descrip- Horse...
Page 12
79.2 (ICOMIA 39/94) dB (A) Hand Vibration Level — (ICOMIA 38/94) m/sec2 Remark: Specifications subject to change without notice. *1 Without propeller, with battery cable. *2 With manual Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).
Page 13
79.2 (ICOMIA 39/94) dB (A) Hand Vibration Level — (ICOMIA 38/94) m/sec2 Remark: Specifications subject to change without notice. *1 Without propeller, with battery cable. *2 With manual Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).
PARTS NAME ENOM00820-0 ENOF01135-0 Tilt Handle Splash Plate Flushing Connector Cap Top Cowl Anode Warning Lamp Bottom Cowl Clamp Bracket Stop Switch Cooling Water Check Port Clamp Screw Stop Switch Lanyard Oil Drain Plug Tiller Handle Anti-ventilation Plate Throttle Grip Trim Tab Shift Lever Sub-water Inlet...
Page 15
PARTS NAME ENOM00020-0 E (with multi-function tiller handle), EP ENOF01136-0 Tilt Handle Splash Plate Spark Plug Top Cowl Anode Oil Filler Cap Bottom Cowl Clamp Bracket Flushing Connector Cap Cooling Water Check Port Clamp Screw Warning Lamp Oil Drain Plug Stop Switch Multi-function Tiller handle *2 Anti-ventilation Plate...
Page 16
PARTS NAME ENOM00020-0 ET (with multi-function tiller handle), EPT ENOF01137-0 Tilt Handle Oil Plug (Upper) Fuel Filter Top Cowl Splash Plate Spark Plug Bottom Cowl Anode Oil Filler Cap Cooling Water Check Port Clamp Bracket Flushing Connector Cap PT Switch Clamp Screw Warning Lamp Oil Drain Plug...
Page 17
PARTS NAME ENOM00822-0 Remote control box & Fuel tank ENOF00127-C Control Lever Fuel gauge Neutral lock arm Air vent screw PTT switch Fuel tank cap Free throttle lever Fuel connector (Engine side) Main switch Primer bulb Stop switch Fuel connector (Fuel tank side) Stop switch lock Stop switch lanyard...
Page 19
LABEL LOCATIONS Warning label urge to read the owner’s manual . ENOF00006-0 For tiller handle model 6. Warning label regarding stop switch ENOF00120-0 2-1. Warning regarding emergency start- (See page 38 and page 46,47) ing (See page 40). 2-2. Warning regarding high temperature. 2-3.
Page 20
LABEL LOCATIONS Warning regarding gasoline (See page 28). ENOF00005-M Warning regarding gasoline (See page 28). ENOF00005-F...
Page 21
LABEL LOCATIONS ENOM00019-B CE label locations r o t 4) 5) l a i ENOF01129-0 1. Model code(Model name) 2. Rated power 3. Dry mass weight( Without propeller, with battery cable) 4. Product year 5. Serial No. 6. Manufacture adress 7.
INSTALLATION ENOM00024-A Do not operate the outboard motor until it has been securely mounted on the boat in 1. Mounting the outboard motor on accordance with the instructions below. boat ENOW00009-0 ENOW00006-B WARNING WARNING Mounting the outboard motor without Before installing the outboard motor on the following this manual can lead to unsafe boat, hang the outboard motor with the conditions such as poor maneuverabil-...
Page 23
INSTALLATION ENOM00025-0 water surface is near the bottom cowl- Position ... Above keel line ing, in high waves, water may enter the Set engine at center of boat. engine cylinders. Incorrect outboard motor mounting height or existence of underwater object(s), such as hull bottom design, bottom surface conditions or underwa- ter accessories, can cause water spray possibly reaching the engine through an...
INSTALLATION ENOW00008-A PTT type CAUTION 1. To attach the outboard motor to the Mounting bolts should be installed with boat, use the bolts to secure the out- the bolt head at inside surface of the board motor brackets on transom transom.
INSTALLATION control cable. ENOM00029-A 3. Battery installation 1. Shift cable 2. Throttle cable 3. Cable harness B ENOW00012-0 WARNING ENOW00850-0 Remote control cable length Battery electrolyte contains sulfuric acid ENOW00100-A and thus is hazardous, causing a burn if it CAUTION comes in contact with your skin, or poison- ous if swallowed.
Contact autho- rized Tohatsu dealer for more detail. 1. Place the battery box in a convenient position away from possible water spray. Securely fasten both the box and the battery so they do not shake loose.
The fuel system components on your gasoline in the fuel tank for long periods TOHATSU engine will withstand up to 10% should be avoided. Long periods of stor- ethyl alcohol (hererinafter referred to as the age, common to boats, create unique prob- lems.
PRE-OPERATING PREPARATIONS age if alcohol has washed protective oil When or before refueling: films from internal components. Be sure to remove the static electricity charged in your body before refueling. The sparks due to static electricity may ENOW00018-0 cause explosion of flammable gasoline. WARNING Stop the engine, and do not start the engine during refueling.
PRE-OPERATING PREPARATIONS ENOF00027-A 1. Air vent screw 2. Fuel tank cap ENOF01103-0 2. Open the fuel tank cap slowly. Use only high quality 4-stroke engine oil to 3. Fill the fuel carefully not to over flow. insure performance and prolonged engine life.
PRE-OPERATING PREPARATIONS ]ENOM00033-A 4. Break-In Your new outboard motor and lower unit Always attempt to stay on the windward side of emission. require break-in for the moving compo- n e n t s a c c o r d i n g t o t h e c o n d i t i o n s described in the following time table.
PRE-OPERATING PREPARATIONS ENOM00039-0 5. Warning system If outboard motor encounters an abnormal condition of fault, the warning horn will emit a continuous beep or intermittent short beeps and the warning lamp (LED) will synchronize with the horn and engine speed will be limited (engine will not be ENOF00851-A stopped).
Page 32
PRE-OPERATING PREPARATIONS ENOM00041-B Warning indicators, faults and remedy Warning indicators High Description of faults Remedy Sound Lamp (LED) speed speed One beep On for 5 sec. Normal system test when start up Engine speed exceeds maximum Continuous allowable RPM Continuous Low oil pressure Continuous Water over temperature...
Page 33
PRE-OPERATING PREPARATIONS Remedy Reduce the throttle to less than half opening, and move to safe place quickly, and stop the engine. Check the propeller for bent or dam- aged blades. Consult an authorized dealer if engine shows the same result even after replacing propeller with new one.
ENGINE OPERATION ENOM00042-0 case the cap is loosened by using another procedure when internal pressure of fuel Before starting tank is raised by heat from sources such as sun light. ENOW00022-A CAUTION 1. Full open the air vent screw on the fuel tank cap.
ENGINE OPERATION And be sure to remove the propeller, when starting the engine in the test tank. (See page 72) ENOF00861-A 1. Pull 2. Insert 4. Squeeze primer bulb until it becomes ENOF00863-0 stiff to feed fuel to vapor separator. 1.
ENGINE OPERATION ENON00010-0 Note 3. Set the throttle grip to START position. Start-in-gear protection prevents engine from starting at other than neutral shift. In- gear starting of engine will move the boat immediately, potentially leading to falling down or causing passenger(s) to be thrown overboard.
Page 37
ENGINE OPERATION (For electrical starter type) 3. Set the control lever in the Neutral position. 4. Push the starter switch button and release the button when the engine has started. ENOF00865-A 1. Shift lever ENOF01108-0 ENOW00031-0 1. Starter Button CAUTION Multi-function tiller handle type If the engine starts in gear, do not use it.
Page 38
ENGINE OPERATION Side mount RC type 1. Be sure to install the stop switch lock to the stop switch, and attach the stop switch lanyard securely to the operator or to the operator's PFD (Personal Flo- tation Device.) START PUSH TO IDLE CHANGE ENOF00867-A 1.
ENGINE OPERATION 4. Turn the main switch key to ON posi- tion. 5. Turn the main switch key to START position and release the key when the engine has started. Also, confirm warning lamp light up with buzzer sound and then go off. The key returns to the original position, automatically.
Page 40
ENGINE OPERATION 1. Remove the top cowl. ENOF00126-0 5. Tie a loop in the another end of the ENOF01111-0 2. Remove starter lock cable from recoil emergency starter rope and attach starter by pulling the starter lock cable. socket wrench that is included in the tool kit.
ENGINE OPERATION 8. Pull the starter handle slowly until you Clutch in (In gear) Clutch off (Out of gear) feel engagement, keep pulling till you 850 rpm 850 rpm feel less resistance. Then pull it quickly. 9. After engine starts, do not reinstall fly- ENOM00 Trolling engine speed control wheel cover and top cowl.
ENGINE OPERATION ENOM00046-A injury, and steering system and/or shift- ing mechanism may be damaged. 4. Forward, reverse, and acceleration ENOW00861-0 WARNING ENOW00037-0 Do not shift at high boat speed, or control WARNING may be lost, falling down or causing pas- senger(s) to be thrown overboard.
Page 43
ENGINE OPERATION ENOM00890-A 1. Shift lever Tiller handle type Forward ENOW00865-0 1. Turn the throttle grip to reduce engine CAUTION speed. Do not force to shift when the throttle grip 2. When the engine reaches trolling (or is not in the fully closed position, other- idling) speed, quickly pull the shift lever wise, steering system and/or shifting to the Forward position.
Page 44
ENGINE OPERATION Forward 1. Quickly push the control lever to the Forward (F) position 32°, where the gear is connected, while lifting up on the lock button located under the con- trol lever grip. 2. Further forward motion will open the throttle.
ENGINE OPERATION ENOM00049-A 2. Put the shift lever in the Neutral posi- 5. Stopping the engine tion. Run the engine for 2-3 minutes at ENOW00868-0 idling speed for cooling down if it has WARNING been running at full speed. 3. Push the stop switch for a few sec- Be careful not to remove engine stop onds to stop the engine.
Page 46
ENGINE OPERATION Side mount RC type Emergency engine stopping Remove stop switch lock to stop the 1. Put the control lever in the Neutral engine. position and run the engine for 2-3 minutes at idling speed for cooling down if it has been running at full speed.
ENGINE OPERATION ENOM00910-0 Spare emergency stop switch lock A spare emergency stop switch lock is provided in the tool bag. When used as described, the emergency stop switch clip and emergency stop switch lanyard system stops the engine if the operator falls away from the controls. When an operator falls into water, be sure to use emergency stop switch lock of the spare.
Page 48
ENGINE OPERATION Unsuitable trim position can cause loss ENOM00053-0 Improper trim angle (bow rises too of control of boat. When testing a trim high) position, run boat slow initially to see if it Set the thrust rod lower if the bow of the can be controlled safely.
ENGINE OPERATION Power Tilt type Trim angle adjustment (Power tilt type) The transom angle adjustment 1. Stop the engine 2. Operate the Power Tilt switch and raise the outboard motor to the tilt up position. 3. Lock the tilt with the Tilt stopper. 4.
Page 50
ENGINE OPERATION ENOW00048-0 WARNING When tilting up or down, be careful not to p l a c e y o u r h a n d b e t w e e n t h e s w i v e l bracket and the stern bracket.
Page 51
ENGINE OPERATION ENOM00069-B Power Tilt type Tilt up 1. Operate the Power Tilt switch and tilt the outboard motor up. 2. Lock the tilt with the Tilt stopper after the outboard motor has been tilted up Tilt down 1. Release the tilt stopper from the set-up position while slightly tilting up out- ENOF01112-0 board motor.
ENGINE OPERATION ENOF01144-0 1. Water inlet 2. Sub-water inlet ENOF00892-0 Manual tilt type 1. Power 1. Shallow water running position: 2. Manual Put the reverse lock lever in the tilt up ENOM00068-A position, and tilt up the outboard motor 9. Shallow water operation to put the outboard motor in the shal- low water running position.
Page 53
ENGINE OPERATION ENOF00059-0 1. Reverse lock lever 2. Tilt up position 3. Tilt down position ENOM00069-A Power Tilt type 1. Operate the Power Tilt switch and tilt the outboard motor up into desired shallow water running position. ENOF00067-B ENOF00067-0...
REMOVING AND CARRYING THE OUTBOARD MOTOR ENOM00070-A 1. Removing the outboard motor ENOW00890-0 WARNING Before installing the outboard motor on the boat, hang the outboard motor with the hoist or equivalent device by attaching the engine hanger to the outboard. Use the hoist with allowable load is 150 kg (330 lbs) or above.
REMOVING AND CARRYING THE OUTBOARD MOTOR Do not carry or store outboard motor in Elevate power unit 2 inches to 4 inches if any of positions described below. traveling to avoid oil spillage. Otherwise, engine damage or property damage could result from leaking oil. ENOF01127-0 ENOM00072-A 3.
Page 56
REMOVING AND CARRYING THE OUTBOARD MOTOR ENOW00071-0 CAUTION The tilt support device supplied on your outboard motor is not intended for towing. It is intended to support the outboard motor while the boat is docked, beached, etc. When transporting a boat on a trailer with the outboard motor still attached, discon- nect the fuel line from the outboard motor beforehand and keep the outboard motor...
ADJUSTMENT ENOM00073-0 Friction adjustment of the throttle grip can 1. Steering friction be made with the throttle adjustment screw. Tiller handle type ENOW00074-A WARNING Do not overtighten the steering friction lever it could result in difficulty of move- ment resulting in the loss of control caus- ing an accident and could lead to severe injury.
ADJUSTMENT counter-clockwise to decrease it. I f s t r a i g h t - l i n e c r u i s i n g c a n n o t b e achieved, adjust the trim tab located under Side mount type the anti-ventilation plate.
INSPECTION AND MAINTENANCE ENOM00077-0 Care of your outboard motor To keep your outboard motor in the best operating condition, it is very important that you perform daily and periodic main- tenance as suggested in the maintenance schedules that follow. ENOW00077-0 CAUTION Your personal safety and that of your passengers depends on how well you...
INSPECTION AND MAINTENANCE ENOM00079-0 1. Daily Inspection Perform the following checks before and ENOW00078-0 after use. WARNING Do not use outboard motor if any abnor- mality is found during pre-operation check or it could result in severe damage to the motor or severe personal injury.
Page 61
INSPECTION AND MAINTENANCE Item Points to Check Remedy Steering • Check the operation of the steering handle. Repair Devices • Check if the anode is securely installed. Repair if necessary Other parts • Check the anode for corrosion and deformation. Replace ENOM00081-A Oil level checking...
Page 62
INSPECTION AND MAINTENANCE Wipe off engine oil well immediately if ENOW00920-0 spilled and dispose of it in accordance CAUTION with local fire prevention and environ- ment protection regulations. When washing the outboard motor, be Do not replenish engine oil over upper careful not to spray the water inside of the limit.
ENOW00036-A fuse will likely blow again. CAUTION If the fuse continues to blow, request an authorized Tohatsu dealer to inspect the When the engine is started in the test tank, outboard motor. to avoid over heating and water pump...
Page 64
INSPECTION AND MAINTENANCE 1. Stop the engine and disconnect the battery cable from the battery negative (-) terminal. 2. Remove the engine cover. 3. Remove the fuse box lid. 4. Remove the fuse and check it. If the fuse is blown, replace it with a fuse of the same specified rating.
INSPECTION AND MAINTENANCE ENOM00090-0 2. Periodic Inspection It is important to inspect and maintain your outboard motor regularly. At each interval on the chart below, be sure to perform the indicated servicing. Maintenance intervals should be determined according to the number of hours or number of months, whichever comes first.
Page 66
INSPECTION AND MAINTENANCE Inspection intervals First 20 Every 50 Every 100 Every 200 Description Inspection procedure Remarks hours or 1 hours or 3 hours or 6 hours or 1 month months months year Check for bent blades, damage, wear. Propeller Replace if necessary.
Page 67
INSPECTION AND MAINTENANCE ENOW00933-0 tight. Have the oil filter adjusted to the cor- rect torque as soon as possible with a CAUTION torque-wrench. Engine oil mixed with dust or water will 7. Reset the engine in a vertical position. dramatically shorten the life of the engine. 8.
Page 68
INSPECTION AND MAINTENANCE ENON00920-0 ENOM00092-A Oil filter replacement Note ENOW00091-0 Use only recommended engine oil (See page 13) CAUTION You may be injured due to high engine tem- peratures if you fill engine oil just after stopping. Changing engine oil should be 10W−40 done after the engine has been cooled.
Page 69
INSPECTION AND MAINTENANCE Install fuel filter with all related parts in place, or fuel leak could occur, leading to catching fire or explosion. Check fuel system regularly for leakage. Contact authorized dealer for fuel sys- tem services. Services by unqualified person could lead to engine damage.
Page 70
INSPECTION AND MAINTENANCE ENOM00096-A Be sure to lock outboard motor if it is Fuel filter (for fuel tank) tilted up, or accidental fall of outboard Water or dirt in the fuel tank will cause motor could lead to severe personal injury.
INSPECTION AND MAINTENANCE fire prevention and environment protection regulations. ENON00032-0 Note If water in the oil, giving it a milky colored appearance. Contact your dealer. ENON00033-0 Note Use genuine gear oil or the recommended one (API GL-5: SAE #80 to #90). Required volume: approx.
Page 72
INSPECTION AND MAINTENANCE motor's performance, and cause engine 6. Tighten the propeller nut to specified trouble. torque, and align one of grooves to 1. Put a piece of wood block between propeller shaft hole. propeller blade and anti-ventilation Propeller nut torque: plate to hold propeller.
Page 73
INSPECTION AND MAINTENANCE 2. Remove the top cowl. the correct torque as soon as possible with a torque-wrench. 3. Remove the spark plug caps. 4. Remove the spark plugs by turning it counter-clockwise, using a 5/8" (16 mm) socket wrench and handle that is provided in tool bag.
INSPECTION AND MAINTENANCE ENOM00088-A Anode replacement A sacrificial anode protects the outboard motor from electrolytic corrosion. Anode is located on the gear case, cylinder etc.. When the anode is eroded more than 1/3 of origi- nal size, replace it. ENON00029-0 Notes Never grease or paint the anode.
Page 75
INSPECTION AND MAINTENANCE ENOM00089-B 1. Oil cap Power Tilt oil checking 2. Oil level Recommended oil ENOW00088-0 Use an automatic transmission fluid or WARNING equivalent. Recommended oils are as shown below. Be sure that outboard motor is secured to transom or service stand, or acciden- ATF Dexron III tal drop or fall of outboard motor could lead to severe personal injury.
Page 76
INSPECTION AND MAINTENANCE ENOM00960-0 Grease point Apply water proof grease to the parts shown below. ENOF01118-0...
INSPECTION AND MAINTENANCE ENOM00100-A 2. Remove the fuel hose from the out- 3. Off-season storage board motor. 3. Drain all fuel from the fuel hoses, fuel ENOW00934-0 pump, fuel filter (See page 70) and WARNING vapor separator (See page 80), and clean these parts.
INSPECTION AND MAINTENANCE 9. Stand the outboard motor up vertically in a dry place. ENOF01127-0 ENOM00950-0 Adding a fuel stabilizer When adding a fuel stabilizer additive (commercially available), first fill the fuel tank with fresh fuel. If the fuel tank is only partially filled, air in the tank can cause the fuel to deteriorate during storage.
Page 79
INSPECTION AND MAINTENANCE ENOM00970-0 8. Check the drained fuel for the pres- Fuel system draining ence of water or other contaminants. If ENOW00028-A either is present, reassemble the out- WARNING board motor, refill the vapor separator with fuel, and then drain the fuel again. For details on handling fuel, contact an Repeat this procedure until no water or authorized dealer.
INSPECTION AND MAINTENANCE 5. Recharge the battery once a month to 8. Run the engine for 5 minutes at the prevent it from discharging and the slowest speed. electrolyte from deteriorating. 9. Run the engine for 10 minutes at half 6.
INSPECTION AND MAINTENANCE 4. Inject a sufficient amount of engine oil through the spark plug holes. Pull the recoil starter rope several times to circulate the oil throughout the out- board motor. ENOM00106-A 6. Cold weather precautions ENOF01145-0 If you moor your boat in cold weather at temperatures below 0°C (32°F), there is the danger of remained water freezing in the cooling water pump, which may dam-...
TROUBLESHOOTING ENOM00108-0 If you encounter a problem, consult the check list below to determine the cause and to take the proper action. An authorized dealer will always be happy to provide any assistance and information. Possible cause Empty fuel tank Incorrect connection of fuel system Air entering fuel line Deformed or damaged fuel hose...
Page 83
TROUBLESHOOTING Possible cause Low compression Carbon deposits in the combustion chamber Incorrect valve clearance Low oil pressure/level, oil pump failure, Clogged oil filter (Pressure switch ON) Insufficient cooling water flow, clogged or defective pump Incorrect valve timing (timing velt elongation or incorrect installation) Intake/exhaust valve seal failure Excessive wear of piston, piston ring or cylinder...
TOOL KIT AND SPARE PARTS ENOM00109-0 The following a list of the tools and spare parts provided with the motor. Items Quantity Remark Socket wrench 16 Socket wrench 10-13 Tool bag Socket wrench handle Pliers ± Screwdriver Emergency starter rope Spark plug NGK DCPR6E Propeller nut split pin...
PROPELLER TABLE ENOM00111-0 Use a genuine propeller. A propeller must be selected so that the engine rpm measured at wide open throttle while cruising is within the recommended range. 25 : 5000–6000 rpm 30 : 5250–6250 rpm Propeller Size (Diameter × pitch) Propeller Mark inch...
Page 86
OWNER’S MANUAL 003-11117-0 1411NB Printed in Japan...
Need help?
Do you have a question about the MFS 25C and is the answer not in the manual?
Questions and answers