Oil quality is a major contributor to your engine's performance and life. Always select good quality engine oil. Suzuki recommends the use of suzuki performance 4 motor oil or equivalent engine oil. Use sf/sg or sh/ sj with jaso ma in api (american petroleum institute) classification.

Api: american petroleum institute jaso: japanese automobile standards organization
Sae engine 011 viscosity
Suzuki recommends the use of sae 1 ow-40 engine oil. If sae 10w-40 engine oil is not available, select an alternative according to the following chart.

Jaso T903
The jaso t903 standard is an index to select engine oils for 4- stroke motorcycle and atv engines. Motorcycle and atv engines lubricate clutch and transmission gears with engine oil. Jaso t903 specifies performance requ irements for motorcycle and atv clutches and transmission.
There are two classes, ma and mb. The oil container has following classification for confirming the standard.

Energy conserving
Suzuki does not recommend the use of "energy conserving" oi ls. Some engine oils which is api sh or greater has "energy conserving" indication in api classification doughnut mark.
These oils can affect engine life and clutch performance.
Fuel
Engine coolant solutionPrecautions
Precautions for wheel and tire
Proper tire pressure and proper tire loading are important
factors. Over loading tire can lead to tire
failure and loss of motorcycle control.
Under-inflated tires make smooth cornering difficult, and
can result in rapid tire wear.
...
Throttle body disassembly and assembly
Refer to “throttle body removal and installation” .
Disassembly
Caution
identify the position of each removed part.
Organize the parts in their respective groups
so that they can be reinstalled in their
original positions.
Disconnect the fuel feed hose (1), isc valve ho ...
Body frame construction
Frame
Seat rail
Seat rail bolt
Collar
Engine mounting thrust adjuster
Engine mounting thrust adjuster lock-nut
Engine mounting pinch bolt
50 N·m (5.0 Kgf-m,
36.0 Lbf-ft)
23 N·m
(2.3 Kgf-m, 16.5 Lbf-ft)
45 N·m
(4.5 Kgf-m, 32. ...