hard starting 2001 225 ox 66

[ebbtide357]

these yamahas are new to me been a mercury carb guy long time seems like theres no choke when i push in switch after it starts she runs great maybe someone can enlighten me also this was just put on boat im still running out the old premix gas is this gonna give me a hard start problem i have a new racor and plugs just trying to get through the rest of the gas before i change out filters and plugs any input would help thanks

[rodbolt17]

if every thing is right, you simply turn the key.