CRANKSHAFT AND CYLINDER BODYPOWR5-38E5. Check:• Crankshaft bearingsAbnormal noise/damage /roughness → Replace.CAUTION:Do not use compressed air to spin the bear-ings dry. This causes damage to the bearingsurfaces.NOTE:Do not reuse the bearing, always replace itwith a new one.

how to use this manual

safety while working

special tools

outillage special

technical tips

general specifications

maintenance specifications

tightening torques

maintenance interval chart

top cowling

control system

cooling system

propeller shaft housing

electrical components analysis

trouble analysis

wiring diagram

Yamaha 25BMH Service Manual

TOP COVER PICTOGRAPH DESCRIPTION

UNCRATING PROCEDURE (FOR TYPICAL STEEL FRAME)

MOUNTING THE OUTBOARD MOTOR

WATER LEVEL GUIDELINE (4-STROKE ENGINES)

MOUNTING THE REMOTE OIL TANK

NOTICE FOR MOUNTING THE REMOTE OIL TANK

OUTBOARD MOTOR DIMENSIONS

OVERALL DIMENSIONS (2-STROKE)

OVERALL DIMENSIONS (4-STROKE)

CLAMP BRACKET DIMENSION ITEMS

CLAMP BRACKET DIMENSIONS

PROPELLERS

PROPELLER SPECIFICATIONS

PROPELLER SELECTION

WOT OPERATION RANGE TABLE

REMOTE CONTROLS

REMOTE CONTROL APPLICATIONS

remote control

REMOTE SWITCH APPLICATIONS

REMOTE CONTROL CABLES

REMOTE CONTROL ATTACHMENT KIT

STEERING HOOK

STEERING GUIDE ATTACHMENT KIT

CONVENTIONAL WIRE HARNESS

DIGITAL ELECTRONIC CONTROL WIRE HARNESS

TILLER HANDLES

X4 MULTI-FUNCTION TILLER HANDLE

STEERING FRICTION CONTENTS

CONVENTIONAL GAUGE (6Y5 & 6Y7)

MOUNTING THE METERS

ANALOG TACHOMETER

DIGITAL TACHOMETER

SPEEDOMETER

FUEL MANAGEMENT GAUGE

ANALOG TRIM METER

COOLANT PRESSURE METER

COOLANT TEMP. METER

HOUR METER

VOLTAGE METER

FUEL METER

CHARGE WARNING UNIT

WIRE HARNESSES

WIRING DIAGRAMS

DIGITAL NETWORK GAUGE (6Y8)

DIGITAL NETWORK GAUGE COMPATIBLE MODEL

DIGITAL NETWORK GAUGE DIMENSIONS

OPTIONAL EQUIPMENTS

WIRE HARNESS

INITIAL GAUGE SETUP

TROUBLESHOOTING

BASIC REQUIREMENTS

BATTERY

RECOMMENDED BATTERY

BATTERY CABLE LENGTH

BATTERY WIRING

APPENDIX

MODEL NAME DESIGNATION

FUEL SYSTEM VACUUM PRESSURE STANDARD

PORTABLE FUEL TANKS (TYPICAL)

PRE-DELIVERY INSPECTION (PDI) CHECKS

CONVENTIONAL RIGGING KIT CONTENTS

DIGITAL NETWORK GAUGE RIGGING KIT CONTENTS

MANUFACTURING START SERIAL NUMBER

25BMH

SERIAL NUMBER

FIRE PREVENTION

GOOD WORKING PRACTICES

DISASSEMBLY AND ASSEMBLY

MEASURING

REMOVING AND INSTALLING

POWER UNIT

features and benefits

COOLING SYSTEM

TILLER HANDLE

BRACKET AND BOTTOM COWLING

CARBURETOR

IGNITION SYSTEM

30HMH


Contents how to use this manual safety while working special tools outillage special technical tips general specifications maintenance specifications tightening torques maintenance interval chart top cowling control system cooling system propeller shaft housing electrical components analysis trouble analysis wiring diagram	CRANKSHAFT AND CYLINDER BODYPOWR5-38E5. Check:• Crankshaft bearingsAbnormal noise/damage /roughness → Replace.CAUTION:Do not use compressed air to spin the bear-ings dry. This causes damage to the bearingsurfaces.NOTE:Do not reuse the bearing, always replace itwith a new one. Previous Next / 446