This workshop service repair manual covers the Yamaha 20C 20CMH outboard motor, a 2-stroke, 2-cylinder, water-cooled marine propulsion unit with a 430 cc displacement. Engineered for reliability and performance, this outboard motor features a carburetor system, a recoil starter, and an engine stop lanyard switch for safety. Its robust construction and efficient design make it suitable for a wide range of marine applications.
This comprehensive manual provides detailed guidance for the maintenance, repair, and troubleshooting of your Yamaha 20C 20CMH outboard motor. It includes information on periodic maintenance, lubrication, and in-depth repair procedures for all major components, from the power unit and engine internals to the gear case and mounting brackets. Essential technical specifications, diagnostic procedures utilizing special tools, and critical fastener torque values are also covered, ensuring that owners and technicians can effectively maintain the motor's optimal performance and longevity.
YAMAHA 20C 20CMH OUTBOARD MOTOR WORKSHOP SERVICE REPAIR MANUAL
THIS MANUAL IS COMPATIBLE WITH THE FOLLOWING COMPUTER OPERATING SYSTEMS:
# ALL WINDOWS OPERATING SYSTEM
# ALL MAC OPERATING 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 zip website
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 PRESENTED FOR YOU IN ELECTRONIC FORMAT YOU CAN JUST PRINT OUT THE PAGE YOU NEED THEN DISPOSE OF IT WHEN YOU HAVE COMPLETED YOUR TASK. THIS MANUAL HAS DETAILED ILLUSTRATIONS AS WELL AS STEP BY STEP WRITTEN INSTRUCTIONS WITH THE NECESSARY DIAGRAMS OR PICTURES. THESE MANUALS ARE YOUR NUMBER ONE SOURCE FOR REPAIR AND SERVICE INFORMATION & SPECIFICALLY WRITTEN FOR THE DO-IT-YOURSELF AS WELL AS THE EXPERIENCED MECHANICS WORLDWIDE USED TO USE THIS FACTORY MANUAL TO FIX YOUR BIKE. USING THIS REPAIR MANUAL IS AN INEXPENSIVE WAY TO KEEP YOUR VEHICLE WORKING PROPERLY. IT IS THIS LEVEL OF DETAIL, ALONG WITH ILLUSTRATED, THAT GUIDE THE READER THROUGH EACH SERVICE, REPAIR & MAINTENANCE PROCEDURE.
NOTE: I ALSO HAVE LOTS OF MANUAL WHICH ARE NOT ADVERTISED IN MY STORE, IF YOU NOT FOUND YOUR DESIRED MANUAL IN MY STORE, PLEASE MASSAGE ME AND I WILL TRY MY BEST TO PROVIDE YOU THAT MANUAL.
YAMAHA 20C 20CMH OUTBOARD MOTOR WORKSHOP SERVICE REPAIR MANUAL
THIS MANUAL IS COMPATIBLE WITH THE FOLLOWING COMPUTER OPERATING SYSTEMS:
# ALL WINDOWS OPERATING SYSTEM
# ALL MAC OPERATING 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 zip website
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 PRESENTED FOR YOU IN ELECTRONIC FORMAT YOU CAN JUST PRINT OUT THE PAGE YOU NEED THEN DISPOSE OF IT WHEN YOU HAVE COMPLETED YOUR TASK. THIS MANUAL HAS DETAILED ILLUSTRATIONS AS WELL AS STEP BY STEP WRITTEN INSTRUCTIONS WITH THE NECESSARY DIAGRAMS OR PICTURES. THESE MANUALS ARE YOUR NUMBER ONE SOURCE FOR REPAIR AND SERVICE INFORMATION & SPECIFICALLY WRITTEN FOR THE DO-IT-YOURSELF AS WELL AS THE EXPERIENCED MECHANICS WORLDWIDE USED TO USE THIS FACTORY MANUAL TO FIX YOUR BIKE. USING THIS REPAIR MANUAL IS AN INEXPENSIVE WAY TO KEEP YOUR VEHICLE WORKING PROPERLY. IT IS THIS LEVEL OF DETAIL, ALONG WITH ILLUSTRATED, THAT GUIDE THE READER THROUGH EACH SERVICE, REPAIR & MAINTENANCE PROCEDURE.
NOTE: I ALSO HAVE LOTS OF MANUAL WHICH ARE NOT ADVERTISED IN MY STORE, IF YOU NOT FOUND YOUR DESIRED MANUAL IN MY STORE, PLEASE MASSAGE ME AND I WILL TRY MY BEST TO PROVIDE YOU THAT MANUAL.
