Suzuki 2005 GSF1200 Service Manual page 33

Valve Clearance Inspection and Adjustment
Inspect valve clearance
Initially at 1 000 km (600 miles, 2 month) and every
12 000 km (7 500 miles, 24 months) thereafter.
Valve clearance adjustment must be checked and
adjusted, a) at the time of periodic inspection, b) when
the valve mechanism is serviced, and c) when the
camshafts are removed for servicing.
1) Remove the fuel tank. Refer to "Fuel Tank Removal
and Installation: in Section 1G".
2) Remove the frame head covers. (GSF1200) Refer to
"Exterior Parts Removal and Installation: in Section
9D".
3) Remove the PAIR valve. Refer to "PAIR System
Removal and Installation: in Section 1B".
4) Remove all the spark plugs. Refer to "Spark Plug
Removal and Installation: ".
5) Remove the breather cover (1).
6) Remove the cylinder head cover. Refer to "Engine
Top Side Disassembly: in Section 1D".
NOTE
The valve clearance specification is different
for both intake and exhaust valves.
Valve clearance (When cold)
IN.: 0.10 – 0.15 mm (0.004 – 0.006 in)
EX.: 0.18 – 0.23 mm (0.007 – 0.009 in)
NOTE
• The camshafts must be at positions "A" or
"B", in order to check or adjust the valve
clearance. Clearance readings should not
be taken with the camshafts in any other
position than the ones shown.
• The valve clearance should only be
checked when the engine is cold.
B649G10206005
1
I649G1020066-01
Maintenance and Lubrication:
"A"
IN.
"B"
7) Remove the CKP sensor cover. Refer to "CKP
Sensor Removal and Installation: in Section 1H".
8) Turn the crankshaft clockwise and align the "T" mark
on the rotor with the center of the CKP sensor. Also,
position the notches "C" on the right end of each
camshaft as shown. Then, measure the following
valve clearances "D".
• Cylinder #1: Intake and exhaust valve clearances
• Cylinder #2: Exhaust valve clearance
• Cylinder #3: Intake valve clearance
"C"
"D"
Camshaft position
Measuring position
0B-7
"A"
EX.
"B"
I649G1020012-01
I649G1020013-02
"C"
I649G1020014-02
"D"
"D" "D"
I649G1020017-02
Notch "C" position
faces outside
"D"