This workshop service repair manual covers the Yamaha 20C 20CMH outboard motor, a 2-stroke, water-cooled marine propulsion unit with a 430 cc displacement and a 2-cylinder configuration. Designed for reliable performance on the water, this motor exemplifies Yamaha's commitment to engineering excellence and durability. Its robust construction and efficient design make it a dependable choice for various marine applications.
This comprehensive manual provides essential information for the maintenance, repair, and troubleshooting of your Yamaha outboard motor. It includes detailed procedures for routine maintenance, lubrication charts, tightening torque specifications, and in-depth coverage of all major systems, including the fuel, carburetor, power unit, gear case, water pump, and electrical components. With clear instructions and diagrams, this manual is an indispensable resource for owners and technicians seeking to ensure optimal performance and longevity of the Yamaha 20C 20CMH.
YAMAHA 20C 20CMH OUTBOARD MOTOR WORKSHOP SERVICE REPAIR MANUAL
ENGINE COVERED:
430 cc 2-CYLINDER, 2-STROKE, WATER-COOLED
CONTENTS:
GENERAL INFORMATION
GENERAL PRECAUTIONS
SPECIFICATIONS
PERIODIC MAINTENANCE
SPECIAL TOOLS
TIGHTENING TORQUE
LUBRICATION CHART
FUEL SYSTEM
CARBURETOR SYSTEM
POWER UNIT
CYLINDER HEAD
CYLINDER BLOCK
PISTON-PISTON RING
PISTON PIN AND SMALL END BEARING
CRANKSHAFT-REED VALVE
THERMOSTAT-BALL BEARING
INTAKE MANIFOLD
GEAR CASE-BEARING HOUSING
DRIVE AND PROPELLER SHAFTS
WATER PUMP INSTALLATION
BACKLASH SYSTEM
CLUTCH DOG AND COMPONENTS
BRACKET UNIT
MOUNTING-BOLT
COLLAR-LEVERS
TILT LOCK PLATES
RECOIL STARTER
ELECTRICAL SYSTEM
SPARK-PLUG-PULSER CO
IGNITION COIL
CDI UNIT
ENGINE STOP LANYARD SWITCH
FLYWHEEL MAGNETO
ELECTRICAL COMPONENTS
TROUBLE-SHOOTING
WIRING DIAGRAM
THIS MANUAL IS COMPATIBLE WITH THE FOLLOWING COMPUTER OPERATING SYSTEMS:
# ALL WINDOWS VERSION
# ALL MAC VERSION
# YOU NEED THE ADOBE ACROBAT READER TO VIEW THE DOCUMENT AS THE MANUAL IS PDF FORMAT. IF YOUR COMPUTER DON'T HAVE THIS APPLICATION YOU CAN DOWNLOAD AND INSTALL IT FREE FROM ADOBE ACROBAT WEBSITE
# AS THIS MANUAL IS COMING TO YOU IN ZIP FORMAT, YOU NEED TO EXTRACT THE FILE BEFORE USE BY USING WINZIP OR WINRAR SOFTWARE. IF YOUR COMPUTER DON'T HAVE THIS APPLICATION YOU CAN DOWNLOAD AND INSTALL IT FREE FROM WINZIP WEBSITE
THIS IS A VERY COMPREHENSIVE AND INTUITIVE ELECTRONIC PDF FORMAT WORKSHOP MANUAL WHICH HAS DETAILED ILLUSTRATIONS AS WELL AS STEP BY STEP INSTRUCTIONS WITH PICTURES & DIAGRAMS. ALL PAGES ARE PRINTABLE, SO RUN OFF WHAT YOU NEED AND TAKE IT WITH YOU INTO THE GARAGE OR WORKSHOP. THIS MANUAL ARE YOUR NUMBER ONE SOURCE FOR REPAIR AND SERVICE INFORMATION. THEY ARE SPECIFICALLY WRITTEN FOR THE DO-IT-YOURSELF AS WELL AS THE EXPERIENCED MECHANIC. USING THIS REPAIR MANUAL IS AN INEXPENSIVE WAY TO KEEP YOUR MACHINE/VEHICLE WORKING PROPERLY. EACH MANUAL PROVIDES STEP-BY-STEP INSTRUCTIONS BASED ON THE COMPLETE DIS-ASSEMBLY OF THE MACHINE. SO, IT ALLOWING YOU TO STOP WASTING MONEY ON ROUTINE MAINTENANCE, AND GIVE YOU ALL THE SOLID INFORMATION AND GUIDANCE NEEDED TO PERFORM LARGER REPAIRS AND MODIFICATIONS AT HOME.
YAMAHA 20C 20CMH OUTBOARD MOTOR WORKSHOP SERVICE REPAIR MANUAL
ENGINE COVERED:
430 cc 2-CYLINDER, 2-STROKE, WATER-COOLED
CONTENTS:
GENERAL INFORMATION
GENERAL PRECAUTIONS
SPECIFICATIONS
PERIODIC MAINTENANCE
SPECIAL TOOLS
TIGHTENING TORQUE
LUBRICATION CHART
FUEL SYSTEM
CARBURETOR SYSTEM
POWER UNIT
CYLINDER HEAD
CYLINDER BLOCK
PISTON-PISTON RING
PISTON PIN AND SMALL END BEARING
CRANKSHAFT-REED VALVE
THERMOSTAT-BALL BEARING
INTAKE MANIFOLD
GEAR CASE-BEARING HOUSING
DRIVE AND PROPELLER SHAFTS
WATER PUMP INSTALLATION
BACKLASH SYSTEM
CLUTCH DOG AND COMPONENTS
BRACKET UNIT
MOUNTING-BOLT
COLLAR-LEVERS
TILT LOCK PLATES
RECOIL STARTER
ELECTRICAL SYSTEM
SPARK-PLUG-PULSER CO
IGNITION COIL
CDI UNIT
ENGINE STOP LANYARD SWITCH
FLYWHEEL MAGNETO
ELECTRICAL COMPONENTS
TROUBLE-SHOOTING
WIRING DIAGRAM
THIS MANUAL IS COMPATIBLE WITH THE FOLLOWING COMPUTER OPERATING SYSTEMS:
# ALL WINDOWS VERSION
# ALL MAC VERSION
# YOU NEED THE ADOBE ACROBAT READER TO VIEW THE DOCUMENT AS THE MANUAL IS PDF FORMAT. IF YOUR COMPUTER DON'T HAVE THIS APPLICATION YOU CAN DOWNLOAD AND INSTALL IT FREE FROM ADOBE ACROBAT WEBSITE
# AS THIS MANUAL IS COMING TO YOU IN ZIP FORMAT, YOU NEED TO EXTRACT THE FILE BEFORE USE BY USING WINZIP OR WINRAR SOFTWARE. IF YOUR COMPUTER DON'T HAVE THIS APPLICATION YOU CAN DOWNLOAD AND INSTALL IT FREE FROM WINZIP WEBSITE
THIS IS A VERY COMPREHENSIVE AND INTUITIVE ELECTRONIC PDF FORMAT WORKSHOP MANUAL WHICH HAS DETAILED ILLUSTRATIONS AS WELL AS STEP BY STEP INSTRUCTIONS WITH PICTURES & DIAGRAMS. ALL PAGES ARE PRINTABLE, SO RUN OFF WHAT YOU NEED AND TAKE IT WITH YOU INTO THE GARAGE OR WORKSHOP. THIS MANUAL ARE YOUR NUMBER ONE SOURCE FOR REPAIR AND SERVICE INFORMATION. THEY ARE SPECIFICALLY WRITTEN FOR THE DO-IT-YOURSELF AS WELL AS THE EXPERIENCED MECHANIC. USING THIS REPAIR MANUAL IS AN INEXPENSIVE WAY TO KEEP YOUR MACHINE/VEHICLE WORKING PROPERLY. EACH MANUAL PROVIDES STEP-BY-STEP INSTRUCTIONS BASED ON THE COMPLETE DIS-ASSEMBLY OF THE MACHINE. SO, IT ALLOWING YOU TO STOP WASTING MONEY ON ROUTINE MAINTENANCE, AND GIVE YOU ALL THE SOLID INFORMATION AND GUIDANCE NEEDED TO PERFORM LARGER REPAIRS AND MODIFICATIONS AT HOME.
