Suzuki 2005 GSF1200 Service Manual page 103

Valve spring free length (IN & EX)
Service limit: INNER: 35.0 mm (1.38 in)
Service limit: OUTER: 37.8 mm (1.49 in)
Valve spring tension (IN & EX)
Standard: INNER: 53 – 65 N, 5.3 – 6.5 kgf/28.0 mm
(11.7 – 14.3 lbs/1.10 in)
Standard: OUTER: 131 – 151 N, 13.1 – 15.1 kgf/31.5
mm (28.9 – 33.3 lbs/1.24 in)
Tension "a"
Inner 53 – 65 N
spring (5.3 – 6.5 kgf, 11.7 – 14.3 lbs)
Outer 131 – 151 N
spring (13.1 – 15.1 kgf, 28.9 – 33.3 lbs)
Rocker Arm Shaft Outside Diameter
On the sliding surface, take two measurements, at right
angle to each other. If the outside diameter measured is
less than the standard value, replace the shaft.
Rocker arm shaft O.D.
Standard: 11.973 – 11.984 mm (0.4714 – 0.4718 in)
Special tool
(A): 09900–20205 (Micrometer (0-25mm))
(A)
I649G1140237-02
" a "
" b "
I649G1140238-02
Length "b"
28.0 mm
(1.10 in)
31.5 mm
(1.24 in)
(A)
I649G1140239-02
Rocker Arm Inside Diameter
Measure the rocker arm inside diameter in two directions
at right angle to each other. If the inside diameter
measured exceeds the standard value, replace the
rocker arm.
Rocker arm I.D.
Standard: 12.000 – 12.018 mm (0.4724 – 0.4731 in)
Special tool
(A): 09900–20605 (Dial calipers (1/100 mm, 10 -
34 mm))
(A)
Valve Seat Width
1) Visually check for valve seat width on each valve
face. If the valve face has worn abnormally, replace
the valve.
2) Coat the valve seat with a red lead (Prussian Blue)
and set the valve in place.
3) Rotate the valve with light pressure.
Engine Mechanical: 1D-35
I649G1140240-02