HONDA BF90A BF90 OUTBOARD OWNER Owners Manual

© HONDA MOTOR CO., LTD. 1995 BF75A/90A Owner’s Manual

Thank you for purchasing a Honda Outboard Motor. This manual describes the operation and maintenance of the Honda BF 75A and BF 90A Outboard Motors. All information in this publication is based on the latest product informa- tion available at the time of printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incurring any obligation. No part of this publication may be reproduced without written permission. This manual should be considered a permanent part of the Outboard Motor and it must stay with the Outboard Motor if resold. SAFETY MESSAGES Your safety and the safety of others are very important. We have provided important safety messages in this manual and on the outboard motor. Please read these messagescarefully. A safety message alerts you to poten- tial hazards that can hurt you and others. Each safety message is preceded by a safety alert symbol A and one of three words: DANGER, WARNING, or CAUTION. These mean: B You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions. - You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions. - You CAN be HURT if you don’t follow instructions. Each message tells you what the hazard is, what can happen, and what you can do to avoid or reduce injury. DAMAGE PREVENTION MESSAGES You will also see other important messages that are preceded by the word NOTICE. This word means: NOTICE Your outboard motor or other property can be damaged if you don’t follow instructions. The purpose of these messages is to help prevent damage to your outboard motor, other property, or the environment. HONDA MOTOR CO., LTD. 1995 ALL RIGHTS RESERVED 1

TYPES OF HONDA BF75AIBOA OUTBOARD MOTORS It may be necessary to refer to this chart for reference purposes when reading this manual. TYPE CODE (example) LRT T=Power Trim /Tilt R=Remote Control H=Tiller Handle X=Extra Long Shaft L=Long Shaft TT, 2

IDENTIFICATION NUMBERS LEFTSTERNBRACKET PRODUdT IDENTIFICATION NUMBER The Product Identification Number is stampedon a plate and attached to the left stern bracket. Product identification number: ENGIN’E SERIAL NUMBER The Engine Serial Number is stamped on the cylinder block in the front of the engine. Engine serial number: Record the Product Identification Number (P.I.N.) and the Engine Serial Number for your reference. Refer to the Product Identification Number when ordering parts, and when mak- ing technical or warranty inquiries (see page 136).

CONTENTS 1. SAFETY SAFETY LABELS.. ................... SAFETY INFORMATION.. ...... 2. COMPONENT IDENTIFICATION ... 3. CONTROLS & INSTRUMENTS TILLER HANDLE TYPE Ignition Switch ........................... Gear Shift Lever.. ....................... Choke Knob ................................ Throttle Grip.. ............................. Throttle Opening Indicator.. ....... Throttle Friction Knob ............... Engine Stop Switch .................... Emergency Stop Switch Lanyard .. Oil Pressure Indicator Light ....... Overheat indicator Light ............ Power Trim/Tilt Switch.. ............ Steering Friction Adjuster .......... REMOTE CONTROL TYPE (SIDE-MOUNT TYPE) Remote Control Lever.. .............. Neutral Release Lever ................ Ignition Switch ........................... Emergency Stop Switch Lanyard .. Choke/Fast Idle Lever ................ Manual Choke Knob .................. Oil Pressure IndicatorLight/Buzzer .... Overheat Indicator Light/Buzzer ... Power Trim/Tilt Switch.. ............ 4 6 7 8 14 I4 I4 I5 I5 15 16 I6 17 I7 18 18 I9 20 20 ;: 22 23 23 24 (PANEL-MOUNT TYPE) Remote Control Lever.. .............. 25 Nertral Release Lever.. ............... 26 Ignition Switch ........................... 26 Emergency Stop Switch Lanyard 27 Throttle Button ........................... 28 Choke Switch ............................. 28 Manual Choke Knob .................. 28 Oil Pressure Indicator Light/Buzzer .... 29 OverheatIndicator Light/Buzzer.. .... 29 Power Trim/Tilt Switch.. ............ 30 (TOP-MOUNT TYPE) Remote Control Lcvcr ................ 3 I Ignition Switch ........................... 32 Emergency Stop Switch Lanyard 33 Throttle Button ........................... 34 Choke Switch ............................. 34 Manual Choke Knob .................. 34 Oil Pressure Indicator Light/Buzzer.... 35 Overheat Indicator Light/Buzzer.. . 35 Power Trim/Tilt Switch (remote control lever). . 36 Power Trim/Tilt Switch (control box console). .. 36 COMMON Power Tilt Switch (engine pan). . 37 Trim Meter.. ...................................... 37 Tachometer (optional equipment) .. 37 Manual Relief Valve .................. 38 Tilt Lock Lever.. ......................... 39 Trim Tab ..................................... 39 Anode Metal ............................... 40 Cooling System Indicator ........... 40 Water Intakes .............................. 40 Transom Angle Adjusting Rod .. 41 Fuel Cap/Gauge/Vent Knob (optional fuel tank) .. 42 Over-Rev Limiter ....................... 42 Engine Cover Lock Lever .......... 43 Fuel Host Connector .................. 43 4. PRE-OPERATION CHECKS Engine Cover Removal/Installation.. 44 Engine Oil ..,............................... 45 Fuel Level (optional fuel tank) ... 46 Fuel Recommendations .............. 47 Oxygenated Fuels ....................... 48 Propeller and Cotter Pin Inspection .. 49 Steering Friction Adjustment (TILLER HANDLE TYPE) .. 50 Remote Control Friction Adjustment ................................. 50 Engine Cover Lock Lever Adjustment .. 51 Other Checks l Stem bracket ............................ 52 l Tool Kit .................................... 52 l Anodes ,........,.......................,,.. 52 5. STARTlNG THE ENGINE Optional Fuel Tank ..................... 53 Fuel Line Connection ................. 53

CONTENTS STARTING THE ENGINE (TILLER HANDLE TYPE) .... 55 STARTING THE ENGINE (REMOTECONTROLTYPE) ... 60 (SIDE-MOUNT TYPE) .......... 60 (PANEL-MOUNT TYPE) ...... 63 (TOP-MOUNT TYPE) ............ 66 STARTING THE ENGINE (EMERGENCY STARTING). 69 Troubleshooting Starting Problems.. 74 6. OPERATION Break-in Procedure ..................... 75 TILLER HANDLE TYPE Gear Shifting ........................... 76 Steering .................................... 76 Cruising ................................... 77 REMOTE CONTROL TYPE (SIDE-MOUNT TYPE) Gear Shifting ........................... 78 Cruising ................................... 79 (PANEL-MOUNT TYPE) Gear Shifting ........................... 80 Cruising ................................... 81 (TOP-MOUNT TYPE) Gear Shifting ........................... 82 Cruising ................................... 83 POWER TRIM/TILT Power Trim/Tilt System ........ 84 Trim Meter .............................. 86 Power Tilt Switch (engine pan) ... 87 Manual Relief Valve ............... 87 Tilt Lock Lever.. ...................... 88 Trim Tab Adjustment .................. 89 MOTOR PROTECTION SYSTEM Engine Oil Pressure and Overheat Warning System ...... 90 Over-Rev Limiter .................... 92 Anodes ..................................... 92 Shallow Water Operation ........... 93 High Altitude Operation ............. 94 7. STOPPING THE ENGINE TILLER HANDLE TYPE.. ........ 95 REMOTE CONTROL TYPE (SIDE-MOUNT TYPE) ............. 96 (PANEL-MOUNT TYPE) ......... 97 (TOP-MOUNT TYPE) ............... 98 8. TRANSPORTING ...................... 99 9. CLEANING AND FLUSHING . 102 IO. MAINTENANCE ....................... 104 THE IMPORTANCE OF MAINTENANCE .................... I04 MAINTENANCE SAFETY ....... 104 EMISSION CONTROL SYSTEM INFORMATION.. .. 105 Tool Kit and Spare Parts ............ 108 MAINTENANCE SCHEDULE.. .. 109 Engine Oil ............................... 111 Gear Oil ................................... 113 Spark Plugs .............................. 115 Battery (not included) .............. 116 Lubrication .............................. 118 Engine Fuel Filter.. .................. 12 1 Fuel Tank and Filter ................ 123 Fuse Replacement ................... 124 Propeller .................................. 125 Submerged Motor.. .................. 126 11. STORAGE.. ................................ 128 12. TROUBLESHOOTING ............. 132 13. SPECIFICATIONS .................... 134 14. WARRANTY SERVICE ........... 136 15.INDEX.. ...................................... 137 16. WIRING DIAGRAM ................. 14 1 5

1. SAFETY SAFETYLABELS These labels are in the locations shown. They warn you of potential hazards that could seriously injure you. Read these labels carefully. FUEL TANK

1. SAFETY SAFETY INFORMATION For your safety and the safety of oth- ers, pay special attention to these pre- cautions. Operator Responsibility l Know how to stop the engine quickly in caseof emergency. Understand the use of all controls. l Do not exceed the boat manufactur- er’s power recommendation, and be sure that the outboard motor is properly mounted. l Never permit anyone to operate the outboard motor without proper instruction. l Stop the engine immediately if any one falls overboard. l Do not run the engine while the boat is near anyone in the water. l Attach the emergency stop switch lanyard securely to the operator. l Do not remove the engine cover while the engine is running. l Before operating the outboard motor, familiarize yourself with all laws and regulations relating to boating and the use of outboard motors. l Do not attempt to modify the out- board motor. l Always wear PERSONAL FLOTAmON DEVICE (PFD) when on board. l Do not remove any guards, labels, shields, covers or safety devices; they are installed for your safety. Fire and Burn Hazards Gasoline is extremely flammable, and gasoline vapor can explode. Use extreme care when handling gasoline. l Remove any portable fuel tank from the boat for refueling. l Refuel in a well-ventilated area with the engine stopped. Keep flames and sparks away, and do not smoke in the area. l Refuel carefully to avoid spilling fuel. Avoid overfilling the fuel tank (there should be no fuel in the filler neck). After refueling, tighten the filler cap securely. If any fuel is spilled, make sure the area is dry before starting the engine.

2. COMPONENT IDENTIFICATION (TILLER HANDLE TYPE) THROTTLE GRIP POWER TILT ENGINE COVER LOCK LEVER L HOSE CONNECTOR HROTTLE FRICTION KNOB WASH PLUG VALVE ENGINE OIL DRAIN BOLT HIFT LEVER ACCESS COV ‘I-VENTILATION NITION SWITCH ANODE METAL TRANSOM ANG ADJUSTING RO NODE METAL / GEAR OIL REAR VENT DRAIN PLUG \ PLUG EXHAUST PORT \ WATER INTAKE 8