Rough engine

[Toro cuTter]

Need help I have a toro time cutter ss5000 that has a v twin engine it is running only on the left side cylinder it has spark on both sides and good compression I switched coils and still only runs on the left side cleaned and replaced carb gaskets need help thanks

 

[mechanic mark]

Interactive Manual

manuals.toro.com

See troubleshooting section in manual above. Adjust valves, engine cold, per specs. in Engine Manual.