Download Print this page
TOHATSU MFS 9.9E Service Bulletin
Hide thumbs Also See for MFS 9.9E:

Advertisement

Quick Links

NO.17-036
10/12/17
Subject:
New Model MFS 9.9/15/20E Service Information
Applicable Model: MFS9.9/15/20E (from July 2017 production)
〈Summary〉
Production of the new MFS 9.9/15/20E started in July 2017.
This Service Bulletin provides service information that is necessary for these models.
〈Product Summary〉
・World's Lightest 20 PS 4 stroke
・Inherited "LIGHT WEIGHT & ECO SPORTY" concept.
・Newly adopted Fuel Injection system for environment-friendly design.
1

Advertisement

loading
Need help?

Need help?

Do you have a question about the MFS 9.9E and is the answer not in the manual?

Questions and answers

Summary of Contents for TOHATSU MFS 9.9E

  • Page 1 NO.17-036 10/12/17 Subject: New Model MFS 9.9/15/20E Service Information Applicable Model: MFS9.9/15/20E (from July 2017 production) 〈Summary〉 Production of the new MFS 9.9/15/20E started in July 2017. This Service Bulletin provides service information that is necessary for these models. 〈Product Summary〉 ・World’s Lightest 20 PS 4 stroke ・Inherited "LIGHT WEIGHT &...
  • Page 2 NO.17-036 10/12/17 〈Characteristic〉 Top Cowl and Top Cowl Seal ・Stylish design inherited from MFS 40/50A model. ・Adopted new style Top Cowl Seal which is similar structure to the door seal of an automobile for high water resistance performance. Top Cowl Seal Integrated Bottom Cowl (Drive Shaft Housing Cover) ・In order to reduce weight and improve serviceability, resin is adopted for the Bottom Cowling(Drive Shaft Housing Cover).
  • Page 3 NO.17-036 10/12/17 Engine Downsizing ・The displacement was reduced to 333cc from the previous model 351cc for light weight. ・Size and form of components were optimized. Previous Fuel Injection System ・VST (Vapor Separator Tank) has been designed to integrate High Pressure Fuel Feed Pump and Fuel Cooler inside the VST, making it a compact and easy-servicing fuel system.
  • Page 4 NO.17-036 10/12/17 ・VST equipped with 3 phase brushless motor and integrated fuel regulator. ・ECU controls the pump rotation speed to optimize fuel supply for each engine speed, also to reduce the electric consumption. Fuel Pressure: 0.25 MPa (250 kpa, 36.3 psi). Regulator ①...
  • Page 5 NO.17-036 10/12/17 Sensor and Actuator ・T - MAP Sensor, ISC Valve and TPS have been integrated onto Throttle Body for better service ability. Rectifier Regulator Engine Temp Sensor Starter Solenoid PT Solenoid Pulsar Coil Ignition Coil Oil Pressure Switch Injector #1 Starter Motor Sennsa- ISC Valve...
  • Page 6 NO.17-036 10/12/17 Fresh-Air Intake System ・In order to improve output performance, a system that decreases the intake air temperature has been adopted. ・Fresh-Air can be taken from outside the Cowl to the Intake Silencer directly. The intake air temperature at Throttle Body is 5 to 10 °C cooler than conventional system. ・The total length of the air intake has been extended from 100 mm to 300mm in order to increase the torque at low and middle engine speed.
  • Page 7 NO.17-036 10/12/17 Mounting System ・Locate the Upper and Lower Mount Rubber as much as far from each other to reduce the vibration .In addition, the shape and rubber hardness of each part have been optimized. Damper Rubber Upper A Damper (Upper) Rubber Mount (Upper) Damper (Lower) Rubber Mount (Lower)
  • Page 8 NO.17-036 10/12/17 Optimum Drive Shaft Housing ・Reduced weight by removing unnecessary alloys while maintaining the durability. Previous Tiller Handle and Storable Carry Handle ・Newly designed tiller handle with all required functions for maneuverability, such as Stop Switch, Shift Handle, and Power Tilt Switch ・Storable Carry Handle for ease of carrying.
  • Page 9: Flushing System

    NO.17-036 10/12/17 Gear Case ・Optimized slim gear case to reduce water resistance. (Light blue: Previous Model, Gray: New Model) ・Adopted thicker skeg for durability. Previous Flushing System ・Added a flushing device to make cleaning inside the engine easier.
  • Page 10 NO.17-036 10/12/17 Oil Drop Prevention Function ・In order to prevent engine oil dropping in the cowling when changing the oil filter, Oil Drop Prevention Function has been added. A rib located below the Oil Filter catches the dropped oil. And the dropped oil can be drained through the hose that is connected with the rib.
  • Page 11 NO.17-036 10/12/17 Diagnostic System ・The software of MFS 25/30 and MFS 40/50 have been updated and MFS 9.9/15/20 has been added. * Diagonal Cable is different for each model family. ➣Engine serial number information is available ➣No ON/OFF switch on diagnostic cable. It is not necessary to turn ON/OFF the switch when the drop test is performed.
  • Page 12 NO.17-036 10/12/17 Diagnostic Software Download ・The Diagnostic Software is available on the TOPS web page. *The Diagnostic Software is the same for all MFS series.
  • Page 13: Service Data

    NO.17-036 10/12/17 〈Service Data〉 Item Standard Value Parts Name Functional Limit Action To Be taken 1. Carbon adhesion in combustion chamber Clean to remove. Distortion amount:0.1mm Correct. (Use water proof sand paper of 2. Distortion and damage of mating surface Distortion amount:0.05mm Or if there are scratches #240 to 400 on the surface plate to...
  • Page 14 NO.17-036 10/12/17 Item Standard Value Parts Name Functional Limit Action To Be taken 0.10~0.15mm 1.Valve Clearance Adjust within regulation 0.20~0.24mm 5.48mm 5.46mm 2. Valve Stem Outer Diameter Replace if less than specified limit. 5.46mm 5.44mm 5.51mm 5.55mm 3. Valve Guide Inner Diameter Replace if over specified limit.
  • Page 15 NO.17-036 10/12/17 Item Standard Value Parts Name Functional Limit Action To Be taken ・Valve Operation Starting Temperature (Submerged) Put the thermostat in the water, gradually raise the water ・Valve Full Open Temperature (Submerged) temperature and check the valve Thermostat 1. Opening and shutting of underwater thermostat opening temperature.
  • Page 16 NO.17-036 10/12/17 〈Propeller List〉 Propeller List (No. of Blades × Diameter × Pitch) [mm/in] Propeller Name (mm) (in) Part number Remarks 11.5 (3×235×292) (3×9.25×11.5) 3BAB64524-1 (3×235×254) (3×9.25×10) 3BAB64521-1 (3×235×229) (3×9.25×9) 3BAB64518-1 (3×235×203) (3×9.25×8) 3BAB64516-1 (3×234×174) (3×9.21×7) 362B64105-1 (3×234×155) (3×9.21×6) 362B64107-1 (4×234×178) (4×9.21×7) 3Z0S64514-3...
  • Page 17 NO.17-036 10/12/17 〈Crank Journal Metal Selection〉 A or B X or Y Lower Bearing side Upper Bearing side Mating symbol marking position of hole diameter The photo is Crank journal Metal size Part number Color Thickness(mm) 3RS-07708-0 Blue 1.488~1.494 3RS-07707-0 1.494~1.500 Cylinder Block &...
  • Page 18: Periodic Inspection

    NO.17-036 10/12/17 〈Periodic Inspection〉 Classification Inspection Parts Inspection Period Inspection Item Remarks First 20 First 50 First 100 Every 200 Every hours hours hours hours of hours of 1 year 1 year 1 month 1 month 6 month ○ Fuel Filter Check and clean or Replace if necessary.
  • Page 19: Daily Inspection

    NO.17-036 10/12/17 〈Daily Inspection〉 Inspection Items Inspection Location Processing Fuel Amount (Presence or absence of scheduled usage amount) Replenishment Repair Fuel System Fuel Leakage, Hose Damage or Change Presence of water, dust, etc. in Tanks and Filters Cleaning Damage to Fuel Tank Cap Change Fuel Tank Confirmation of leak of Air Vent Screw and Fuel Cap...
  • Page 20: Specifications

    NO.17-036 10/12/17 〈Specifications〉 MFS9.9/15/20E Specification List Designation name Unit Overall Length 1038 (40.87) 635 (25.00) mm (in) Overall Width 349 (13.74) 339 (13.34) mm (in) 349 (13.74) Overall Height S:1116 (43.94)   L:1258(49.53) UL:1386 (54.57) mm (in) Transom Length S: 413 (16.26)   L:562 (22.16)   UL:689 (27.16) mm (in) kg (lb) 43.0(94.8)
  • Page 21 NO.17-036 10/12/17 MFS9.9/15/20E Specification List Designation name Unit Unleaded Regular Gasoline Octane Rating for R+M/2: 87 or higher Fuel Recommendation for RON : 91 or higher E10 Gasoline Yes / M5 Gasoline Not available API Classification SH, SJ, SL class SAE 10W-30/40 Oil Filter change 1200 (0.31)...
  • Page 22 NO.17-036 10/12/17 MFS9.9/15/20E Optional parts Designation name Propeller      6″ ○ Propeller       7″ ○ Propeller       7″(4 Blades) ○ Propeller        8″ ○ Propeller        9″ ○ Propeller        10″ ○ Propeller        11.5″ ○ ○ Tachometer Tachometer(With Oil Lamp )...
  • Page 23 NO.17-036 10/12/17 〈Dimensional Drawing〉 MF/EF/EP...
  • Page 24 NO.17-036 10/12/17 EFT/EPT (Power Tilt Model)
  • Page 25: Warning Indicators

    NO.17-036 10/12/17 〈Warning Indicators〉 Warning Display Engine engine Description of faults Remedy Buzzer(* 3) Lamp(LED) Low Speed High Speed Lit for 5 It is an operation confirmation of the warning Only for 0.5 seconds seconds system at the time of starting and it is normal Continuous sound (* 2) Light(*2) ON(*2)
  • Page 26 NO.17-036 10/12/17 〈Tightening Torque List〉 Target Location ScrewB×Pitch Type of Fastner Temporary Driving Torque Driving Torque N-m M8×1.25 Bolt 8.8~10.8(0.9~1.1lbf・ft) 27.4~31.4(20.2~23.1lbf・ft) Cylinder Block - Cylinder Head M6×1.0 Bolt 4.9~6.9(0.5~0.7lbf・ft) 7.8~9.8(5.8~7.2lbf・ft) - Spark Plugs M12×1.25 14.7~19.6(10.8~14.5lbf・ft) M8×1.25 Bolt 8.8~10.8(0.9~1.1lbf・ft) 21.6~25.5(15.9~18.8lbf・ft) Cylinder Block - Crank Case M6×1.0 Bolt 4.9~6.9(0.5~0.7lbf・ft)
  • Page 27 NO.17-036 10/12/17 〈Sealant, Lubrication and Thread Lock Application Locations〉 Part Name Remarks Konishi Loctite Three Bond Bond 1342 1327 1373B 1401 KS-64 (271) ● ● Camshaft ● Bearing ● Oil Seal(Camshaft) ● Outer surface, press fit Driven Pully Bolt ● Thread ●...
  • Page 28 NO.17-036 10/12/17 Part Name Remarks Konishi Loctite Three Bond Bond 1342 1327 1373B 1401 KS-64 (271) ● Bolt(Drain Cover) Thread ● Bolt(Idle Exhaust Cover) Thread Drive Shaft Housing ● periphery Water Pipe Seal(Upper) ● Water Pipe Auxiliary Mount Inside ● Bolt(Engine) Thread Driveshaft(Crank side Spline part) ●...
  • Page 29: Wiring Diagram

    NO.17-036 10/12/17 〈Wiring Diagram〉 〈Wiring Diagram〉...
  • Page 30 NO.17-036 10/12/17...
  • Page 31 NO.17-036 10/12/17...

This manual is also suitable for:

Mfs 15eMfs 20e