Because it's broken.
I have an 1986 550L and the best way to get it started is to push start it.
Its out of gas
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check your battery connections (maybe loose wires)
Sounds like a funky kill switch or safety switch.
try warming your spark plugs with a lighter, if that does not work check your fuel mixture, or clean the carburetor.
u need to set the air fuel screw
Check your spelling first. Capital letters for names such as 'Suzuki' and for 'I'.
Maybe something with the safety switch on the clutch, or the wiring going to the starter. May be ignition switch also.
The sator is bad or you have a short some where.
There are lots of reasons for it not starting. Here are some. No fuel. Blocked filters. Wrong air/fuel ratio. No spark. Flat battery. Damaged spark plug. Damaged leads. Water on the electrics.
wont down shift