Suzuki Boulevard M50 User Manual

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ENGINE 3-1
CONTENTS
ENGINE
ENGINE COMPONENTS REMOVABLE WITH ENGINE IN PLACE ..............3- 2
ENGINE REMOVAL AND INSTALLATION ....................................................3- 3
ENGINE REMOVAL ...............................................................................3- 3
ENGINE INSTALLATION .......................................................................3- 8
ENGINE DISASSEMBLY .......................................................................3-11
ENGINE COMPONENTS INSPECTION AND SERVICING ............................3-27
CYLINDER HEAD COVER .....................................................................3-27
CAMSHAFT ............................................................................................3-28
CAM CHAIN TENSIONER AND GUIDE ................................................3-30
CYLINDER HEAD ..................................................................................3-30
CYLINDER ..............................................................................................3-40
PISTON ...................................................................................................3-41
CONROD/CRANKSHAFT ......................................................................3-44
CLUTCH .................................................................................................3-53
GENERATOR/SIGNAL GENERATOR/ STARTER CLUTCH ................3-54
OIL PUMP ...............................................................................................3-56
TRANSMISSION ....................................................................................3-57
GEARSHIFT FORK ................................................................................3-60
OIL JET ..................................................................................................3-60
CRANKCASE .........................................................................................3-61
ENGINE REASSEMBLY .................................................................................3-65
SAMPLE

Suzuki Boulevard M50 Specifications

General

Compression Ratio	9.4:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	5-speed constant mesh
Final Drive	Shaft drive
Front Suspension	Inverted telescopic, coil spring, oil damped
Front Tire	130/90-16M/C 67H, tubeless
Rear Tire	170/80-15M/C 77H, tubeless
Ground Clearance	140 mm (5.5 in)
Seat Height	700 mm (27.6 in)
Engine Type	4-stroke, liquid-cooled, V-twin
Bore x Stroke	83.0 mm x 74.4 mm
Rear Suspension	coil spring, oil damped
Front Brakes	Single hydraulic disc
Rear Brakes	Drum
Fuel Tank Capacity	15.5 L (4.1 US gal)
Wheelbase	1, 655 mm (65.2 in)