TOHATSU M 2.5A2 Owner's Manual
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TOHATSU M 2.5A2 Owner's Manual

TOHATSU M 2.5A2 Owner's Manual

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  • Page 1 用 手...
  • Page 3 OWNER’S MANUAL M 2.5A M 3.5A M 3.5B OB No.003-11045-7AF1...
  • Page 4 INJURY OR DEATH. KEEP THIS MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE. Copyright © 2016 Tohatsu Corporation. All rights reserved. No part of this manual may be reproduced or transmitted in any from or by any means without the express written permission of Tohatsu Corporation.
  • Page 5 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.

  • Page 6: Serial Number

    ENOM00005-B Serial Number In the space below, please record the outboard motor's serial number (indicated both on the swivel bracket and on the cylinder block). The serial number will be needed when ordering parts, and when making technical or warranty inquiries. Serial Number: ENOF02001-0 ENOF02000-0...
  • Page 7 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 9: Table Of Contents

    CONTENTS 1. GENERAL SAFETY INFORMATION ....... 10 2. SPECIFICATIONS ..........12 3.
  • Page 11 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.

  • Page 12: General Safety Information

    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 13 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 40).

  • Page 14: Specifications

    SPECIFICATIONS ENOM00810-B MODEL FEATURE Model M2.5A2 M3.5A2 M3.5B2 Type Transom heights Tiller Handle Remote Control Separate fuel tank Integral fuel tank Shifting Manual tilt *1: Option ENOM00811-B MODEL NAME EXAMPLE M3.5B2S Product genera- Model description Horse power Minor change Shaft length tion M (X)= Two stroke S= Short 15 in...
  • Page 15 3.5B2:180mL (6.1 fl.oz), 3.5A2 & 2.5A2:90mL (3.0 fl.oz), Gear Shift Foward Gear Reduction Ratio 1.85 (13 : 24) 2.15 (13 : 28) Remark: Specifications subject to change without notice. Tohatsu outboard is power rated in accordance with ISO8655 (propeller shaft output).

  • Page 16: Parts Name

    PARTS NAME ENOM01301-0 2.5A2, 3.5A2, 3.5B2 ENOF02002-0 1 Air Vent Screw 13 Handle Grip Carburetor Cover 2 Fuel Tank Cap 14 Carring Handle Chork Lever 3 Top Cowl 15 Clamp Screw Drive Shaft Housing 4 Plug Cap Cover 16 Thrust Rod Grommet (3.5B2 only) 5 Fuel Cock 17 Oil Plug (Upper)

  • Page 17: Label Locations

    LABEL LOCATIONS ENOM00019-A Warning label locations ENOF02003-0 Warning label regarding owner’s man- Warning label regarding Emergency ual, top cowl, engine stop switch. manual starting procedure (3.5B2 only) (See page 27) 3C7-72180-3 ENOF00005-Z 2. Warning regarding fuel tank cap. (See Warning regarding high voltage. page19, 24) 3C8-72181-0B ENOF02050-0...
  • Page 18 LABEL LOCATIONS ENOM01001-0 Serial number label locations r o t 4) 5) l a i ENOF02048-0 1. Model code(Model name) 2. Rated power 3. Dry mass weight 4. Serial No. 5. Manufacture name 6. Manufacture address...

  • Page 19: Installation

    INSTALLATION Keep the outboard motor in a vertical posi- ENOM00024-B 1. Mounting the outboard motor on tion when mounting. boat ENOW00006-0 WARNING Most boats are rated and certified in terms of their maximum allowable horsepower, as shown on the boat’s certification plate. Do not equip your boat with an outboard motor that exceeds this limit.
  • Page 20 INSTALLATION 2. Boat transom ENOM00830-A Mounting bolts ENOM00026-0 Manual tilt type Transom matching 1. To attach the outboard motor to the Be sure that the anti ventilation plate of the boat, tighten the clamp screws by outboard motor is 30–50 mm (1.2–2 in) turning their handles.

  • Page 21: Pre-Operating Preparations

    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.

  • Page 22: Engine Oil Recommendation

    PRE-OPERATING PREPARATIONS age if alcohol has washed protective oil films from internal components. Fuel by Oil Mixing (25:1, 50:1) ENOW00018-0 1.0L (25:1) 25 : 1 WARNING 0.5L (25:0.5) 0.4L Fuel leakage can cause fire or explosion, (10 : 0.4) 50 : 1 0.2L potentially leading to severe injury or loss (10 : 0.2)

  • Page 23: Fuel Filling

    PRE-OPERATING PREPARATIONS Leaking gasoline is a dangerous fire haz- ard. ENOW00028-A WARNING Consult an authorized dealer for details on handling gasoline, if necessary. Gasoline and its vapors are very flammable and can be explosive. When carrying a fuel tank containing gaso- line: Close the fuel tank cap and air vent screw of fuel tank cap, or gasoline vapor...

  • Page 24: Break-In

    PRE-OPERATING PREPARATIONS Dispose aged or contaminated gasoline ]ENOM00033-AB in accordance with local regulations. 4. Break-In ENOW00029-A Your new outboard motor and lower unit WARNING require break-in for the moving compo- n e n t s a c c o rd i n g t o t h e c o n d i t i o n s When opening fuel tank cap, be sure to fol- described in the following time table.
  • Page 25 PRE-OPERATING PREPARATIONS ENON00008-0 Note Proper break-in allows outboard motor to deliver it full performance for longer service life. ENOW00023-0 CAUTION Operating the outboard motor without break-in can shorten service life of the product. If any abnormality is experienced during the break-in: Discontinue the operation immediately.

  • Page 26: Engine Operation

    ENGINE OPERATION tank is raised by heat from sources such as ENOM00042-0 sun light. Before starting 1. Before opening fuel tank cap, turn air ENOW00022-B vent screw two turns counterclockwise CAUTION to release air pressure in the fuel tank. Be sure to fill the engine before starting engine.

  • Page 27: Starting The Engine

    ENGINE OPERATION of fuel to flow into the carburetor after open- ENOW00032-B ing the fuel cock. CAUTION Do not try to crank after engine has ENOM00045-D started. 2. Starting the engine ENOW00941-0 ENOW00036-A CAUTION CAUTION When the shift lever is at the “NEUTRAL” When the engine is started in the test tank, position, never move the throttle lever to to avoid over heating and water pump...
  • Page 28 ENGINE OPERATION 2. Set the shift lever in the Neutral posi- ENON00502-0 Note tion. (3.5B2 only) If engine does not start with 4 or 5 times starting operation, push the knob back and restart. 5. Pull the starter handle slowly until you feel engagement, keep pulling till you feel less resistance.

  • Page 29: Emergency Starting

    ENGINE OPERATION 6. When the engine has started, immedi- Attach engine stop switch lanyard to clothing or any part of body like arm ately return the choke lever to the before starting engine. Open position then move the throttle lever downward to slow speed. 1.

  • Page 30: Warming Up The Engine

    ENGINE OPERATION ENOM00044-B Engine speeds Idling speed after warming up. Trolling speed Idling speed Model (in Forward) (in Nutral) 2.5A2 1,100 rpm ENOF02021-0 3.5A2 1,100 rpm 8. After engine starts, do not reinstall fly- 3.5B2 1,100 rpm 1,300 rpm wheel cover and top cowl. ENOM00046-A ENOM00043-C 4.

  • Page 31: Tiller Handle Type

    ENGINE OPERATION Do not shift into Reverse during cruis- ENOM00890-B Tiller handle type ing, or control may be lost, falling down or causing passenger(s) to be thrown ENOW00867-0 overboard. Leading to serious personal WARNING injury, and steering system and/or shift- ing mechanism may be damaged.

  • Page 32: Stopping The Engine

    ENGINE OPERATION The handle upright, turn the outboard ENOM00049-C 5. Stopping the engine motor at an angle of 180° and quickly turn the shift lever to the Forward (F) side. (3.5B2 only needs to operate shift ENOW00868-0 lever) WARNING Be careful not to remove engine stop switch lanyard from engine accidentally while boat is running.

  • Page 33: Steering

    ENGINE OPERATION 3. Push the stop switch. ENOF02029-0 1. Stop switch ENOF02027-0 2. Stop switch lock 1. Stop switch ENOM00920-0 2. Stop switch lock 6. Steering 4. Close the air vent screw and fuel cock. ENOW00870-0 WARNING Sudden steering may cause passenger(s) to be thrown overboard or falling down.

  • Page 34: Trim Angle

    ENGINE OPERATION ENOM00050-0 7. Trim angle ENOW00043-A WARNING Adjust the trim angle when the engine is stopped. ENOF00051-1 Do not put hand or finger in between 1. Perpendicular to the water surface outboard motor body and clamp bracket when adjusting trim angle to prevent ENOM00053-0 injury in case the outboard motor body Improper trim angle (bow rises too...

  • Page 35: Tilt Up And Down

    ENGINE OPERATION Manual Tilt type 6. Gentry lower the outboard. ENOM00060-A 8. Tilt up and down ENOW00055-0 WARNING Do not tilt up or down outboard motor when swimmer(s) or passenger is near to prevent them from being caught between outboard motor body and clamp bracket in case the outboard motor body falls.
  • Page 36 ENGINE OPERATION position for about a minute to allow water to ENOM01304-0 Outboard motor position in tilt up drain from inside the engine. ENOW00053-0 CAUTION ENOM00222-0 Tilt up However, the outboard motor may be set in 1. Close the fuel cock and tighten the air the wrong tilt-up position if the motor vent screw of the tank cap.
  • Page 37 ENGINE OPERATION ENOM00223-0 Tilt down Pull the outboard motor to your side and draw the tilt stopper knob out for tilting down. ENOF02034-0 1. Tilt stopper...

  • Page 38: Removing And Carrying The Outboard Motor

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOM00070-B ENOW00065-0 1. Removing the outboard motor WARNING Close air vent screw of fuel tank before ENOW00064-B carrying or storing outboard motor and fuel CAUTION tank, or fuel may leak, potentially catching fire. Engine may be hot immediately after oper- ating and could cause burns if touched.

  • Page 39: Traillering

    REMOVING AND CARRYING THE OUTBOARD MOTOR motor and fuel tank, or fuel may leak, potentially catching fire. 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.
  • Page 40 REMOVING AND CARRYING THE OUTBOARD MOTOR ENOF00073-A 1. Ground clearance should be provided sufficiently. 2. Transom saver bar ENOW00067-0 WARNING Do not go under outboard motor tilted up even if it is supported by support bar, or accidental fall of outboard motor could lead to severe personal injury.

  • Page 41: Adjustment

    ADJUSTMENT ENOM00073-A 1. Steering friction 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. ENON0925-0 Note The steering adjust screw is used to adjust the friction load of the steering, but not to fix the steering.

  • Page 42: Inspection And Maintenance

    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...

  • Page 43: Daily Inspection

    INSPECTION AND MAINTENANCE ENOM01305-0 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 44 INSPECTION AND MAINTENANCE ENOM00083-0 ENOM00085-B Washing outboard motor Flushing attachment (3.5B2 only) ENOW00922-0 ENOW00081-0 CAUTION WARNING To prevent the engine from starting when Do not start engine without removing pro- you are near the propeller, remove the stop peller, or accidentally turning propeller switch lock.
  • Page 45 INSPECTION AND MAINTENANCE ENOM00085-A Flushing by test tank ENOW00081-0 WARNING Do not start engine without removing pro- peller, or accidentally turning propeller could cause personal injury. ENOW00082-0 WARNING Never start or operate the engine indoors or in any space which is not well ventilated. Exhaust gas contains carbon monoxide, a colorless and odorless gas which can be fatal if inhaled for any length of time.

  • Page 46: Periodic Inspection

    INSPECTION AND MAINTENANCE ENOM01306-0 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 47 INSPECTION AND MAINTENANCE ENOM00093-A Fuel filters and fuel tank cleaning ENOW00093-B WARNING Gasoline and its vapors are very flammable and can be explosive. Keep out of reach of children. Avoid repeated or prolonged contact with skin or breathing of vapor. Do not start this procedure while engine is operating or hot even after stopping it.
  • Page 48 INSPECTION AND MAINTENANCE 2. Remove the oil plugs (lower and 4. Install the upper oil plug, and then upper), and completely drain the gear remove oil tube nozzle and install the oil into a pan. lower oil plug. ENOW00095-0 CAUTION Do not reuse oil plug gasket.

  • Page 49: Propeller Replacement

    INSPECTION AND MAINTENANCE ENOM00232-A Propeller replacement ENOW00084-0 WARNING Do not begin propeller removal and installation procedure with spark plug c a p s a t t a c h e d , s h i f t i n f o r w a rd o r reverse, main switch at other than “OFF”, engine stop switch lock attached to the switch, and starter key attached,...
  • Page 50 INSPECTION AND MAINTENANCE 1. Stop the engine. ENON00028-0 Note 2. Remove the plug cap cover. Spark plug torque: 3. Remove the spark plug caps. 27.0 Nm (20.0 ft-lb) [2.7 kgf-m] If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight.

  • Page 51: Anode Replacement

    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 52 INSPECTION AND MAINTENANCE ENOM00960-0 Grease point Apply water proof grease to the parts shown below. ENOF02044-0...

  • Page 53: Off-Season Storage

    INSPECTION AND MAINTENANCE 3. Drain all fuel from the fuel hoses and ENOM00100-A 3. Off-season storage carburetor (See page 52), and clean these parts. ENOW00934-0 Keep in mind that if gasoline is kept in WARNING the carburetor for a long time, gum and varnish will develop, causing the Be sure to disconnect fuel connector float valve to stick, restricting the fuel...

  • Page 54: Adding A Fuel Stabilizer

    INSPECTION AND MAINTENANCE 1. Before adding fuel stabilizer additive, ENOW00066-0 drain the carburetor (See page 52). CAUTION 2. Follow the instructions on the label Do not carry or store outboard motor in any when adding the fuel stabilizer additive. of positions described below. 3.

  • Page 55: Pre-Season Check

    INSPECTION AND MAINTENANCE 7. Check the drained fuel for the pres- ENOW00097-0 ence of water or other contaminants. If WARNING either is present, reassemble the out- Be sure to use cloth to remove fuel remain- board motor, refill the carburetor with ing in the cowl and dispose of it in accor- fuel, and then drain the fuel again.

  • Page 56: Submerged Outboard Motor

    INSPECTION AND MAINTENANCE ENOM00105-D ENOM00107-A 5. Submerged outboard motor 7. Striking underwater object ENOW00098-0 ENOW00935-0 CAUTION CAUTION Do not attempt to start submerged out- Striking the sea bottom or an underwater board motor immediately after it is recov- object may severely damage the outboard e r e d , o r e n g i n e c o u l d b e s e v e r e l y motor.

  • Page 57: Troubleshooting

    TROUBLESHOOTING ENOM01307-0 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 pipe...

  • Page 58: Tool Kit And Spare Parts

    TOOL KIT AND SPARE PARTS ENOM01308-0 The following a list of the tools and spare parts provided with the motor. Name Quantity Remark Tool bag Pliers Socket wrench 10 × 13 mm Service tools Socket wrench 21 mm Socket wrench handle Screwdriver (Phillips-type Adapter-type and flat head)

  • Page 59: Propeller Table

    PROPELLER TABLE ENOM01309-0 To ensure optimum performance, the propeller should match the boat type and its load. 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. 2.5A2: 3800–5200 rpm 3.5A2/3.5B2: 4200–5300 rpm ENON00245-0...
  • Page 60 OWNER’S MANUAL M 2.5A M 3.5A M 3.5B 003-11045-7AF1 1512NB Printed in Japan...
  • Page 64 用 手...

This manual is also suitable for:

M 3.5b2M 3.5a2

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