When inspecting the chain, look for the following:
If you find anything wrong with the drive chain condition or adjustment, correct the problem if you know how. If necessary, consult your authorized suzuki dealer.
Damage to the drive chain means that the sprockets may also be damaged. Inspect the sprockets for the following:

Note
: the two sprockets should be inspected for wear when a new chain is installed and replaced if necessary.
If you find any of these problems with your sprocket, consult yoursuzuki dealer.
Warning
An incompletely riveted master link, or a joint-clip type master link, may come apart and cause an accident or severe engine damage. Do not use a joint-clip type chain. Chain replacement requires a special riveting tool and a high-quality, non-jointclip type chain. Ask an authorized suzuki dealer or qualified mechanic to perform this work. |
Drive chain
Drive chain cleaning and
oilingDTC “c28” (p1655): secondary throttle
valve actuator (stva) malfunction
Detected condition and possible cause
Detected condition
Possible cause
The operation voltage does not reach the stva.
Ecm does not receive communication signal from the
stva. Stva can not operate properly or its motor locked
Stva malfunction.
...
Iap sensor removal and installation
Removal
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
Disconnect the coupler (1) and vacuum hose (2).
Remove the iap sensor (3) from the air cleaner box.
Installation
Install the iap sensor in the reverse ord ...
Cylinder head related parts inspection
Refer to “cylinder head disassembly and assembly” .
Cylinder head distortion
Decarbonize the combustion chambers.
Check the gasket surface of the cylinder head for
distortion. Use a straightedge and thickness gauge.
Take clearance readings at several places. If
readings exceed the ...