The best answer for this is: Get a tune-up.
If it is backfiring the timing is set incorrectly or the spark plug wires are not connected in the correct order.
To stop a Yamaha 1300 from backfiring, first ensure that the air-fuel mixture is balanced, as a lean mixture can cause backfiring. Check and adjust the carburetor or fuel injection settings, if applicable. Additionally, inspect the exhaust system for leaks and ensure that the spark plugs are clean and functioning properly. Regular maintenance and tuning can also help prevent backfiring issues.
Rev the engine six or seven times before coming to a complete stop. Rev it all the way to the edge every time you stop.
well if its a 2 stroke it needs new reeds if not, your timing is prolly off a bit
More than likely you have a exhaust leak.Check the headpipe seal
Backfiring it normally caused by a car that is very badly out of time. It can also be caused by the spark plug wires being connected incorrectly. Switching to a higher octane will not help at all.
NO, but a good tuneup will probably cure your problems. There is no cure in a can for the symptoms you list.
Backfiring is caused by incorrect timing, or plug wires installed incorrectly which messes up the firing order. Make sure your plug wires are installed correctly. Can also be caused by an overly rich fuel air mixture.
if it only backfires when shutting off, usually this means its getting to much gas!! if it backfires will running adjust carburater.
If it is backfiring only when you kill the engine, allow the engine to idle a few minutes before you kill it. If it is backfiring while in use, check the intake gasket and bolts for wear or looseness.
To prevent backfiring make sure the belt is tight and in good working order. Also clean the air filters regularly.
backfiring.