Coughing or backfiring through your Yamaha Road Star 40mm Mikuni carburetor? Have a read of Mr Tidy’s article on how to adjust the accelerator pump and see if it helps you out.
Re-jet The Yamaha Road Star Carburetor
This is how to change your main jet and needle on the stock Road Star 40mm Mikuni Carburetor.
Principles of modern motorcycle carburetor function specifically in application to the Yamaha XV1600 Road Star
The manifold must be removed from the bike for this procedure. You need a variable speed Dremel tool with a course sandpaper covered cylinder that is about” in diameter.I use the one that came as part of the Dremel kit. Use the low speed setting.This tool really “Hog’s” off the rubber! Take it SLOW AND EASY !!! At least the first time.
Check the Mikuni 40mm Float Bowl Level
Mr Tidy gives us valuable tips to check the Yamaha Road Star’s carburetor float level.
Yamaha Road Star Fuel Pump Relocation
Cleaning up the left hand side of the Road Star engine can be done by relocating the fuel pump up underneath the fuel tank.
Auxiliary Fuel Supply
When you have to remove the gas tank to tune your carbs you sometimes need a source of fuel so you can run the bike for an extended time. There are tanks available that are made specifically for this but are priced around $50.