Very hard starting my 85 Honda Big Red -When it is cold .
Once it is warm it starts up easy.
Does the carb have a sliding needle like a 2 stroke that I can raise.
I don't have a manual for it .
Is there a down load site on the net for one . at least for the carb.

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Have owned:
1978 Yamaha YZ 125
1978 Yamaha TY 250
1979 Husky 390
1984 Yamaha 225 moto4
1984 Yamaha IT 490
1985 Honda Big red
1984 2 Yamaha TY 250
19?? Yamaha BW 350
1989 Yamaha TW 200
1992 Polaris 350
1986 honda 4trax 350

Yes the carb is a slide type with adjustable needle. Is your choke working?