Suzuki GSF650S User Manual

3-38 ENGINE
• Install the valve springs with the smaller pitch

A facing the
cylinder head.

B Larger pitch

C Up

D Paint mark
• Install the valve spring retainer, press down the springs using
the valve lifter and then install the cotter halves on to the stem
end. Then, release the valve lifter to allow the cotter

1 to
wedge between the retainer and the valve stem. Be sure that
the rounded lip

A of the cotter fits snugly into the groove

B in
the stem end.
) 09916-14510: Valve lifter
09916-14910: Valve lifter attachment
09916-84511: Tweezers
$
• Apply engine oil to the rocker arm shaft sufficiently.
• Install the rocker arms

2, the springs

3 and the rocker arm
shaft.
• Tighten the rocker arm shaft set bolt

4 and cylinder head
plug

5 to the specified torque.
) 09900-00410: Hexagon wrench set
# Rocker arm shaft set bolt

4: 9 N·m (0.9 kgf-m)
Cylinder head plug

5: 28 N·m (2.8 kgf-m)
Be sure to install all of the parts in their original posi-
tions.

Suzuki GSF650S Specifications

General

Engine Type	4-stroke, 4-cylinder, liquid-cooled, DOHC
Bore x Stroke	65.5 mm x 48.7 mm
Compression Ratio	11.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	6-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Displacement	656 cm³
Front Brakes	Disc
Rear Brakes	Disc
Front Tire	120/70ZR17
Rear Tire	160/60ZR17
Fuel Tank Capacity	19 liters
Seat Height	790 mm