Steve530
Senior Member 2005 No Login
Offline
Posts: 452
Knoxville, TN
Gender:
|
Bryner. We call that backfiring.
I'm not sure about the regulations in your country, but in the US the Savage carburetor was set to run very lean (use as little gas as possible at idle). When you go from high throttle to idle, the gas and air that goes to the cylinder does not have enough gas to burn. This unburned gas collects in the muffler and eventually ignites, causeing the flame and a loud pop.
You can adjust the idle mixture using a screw on the right side of the carburetor. This screw is under a brass plug toward the front of the carburetor. To access the screw, you must remove the plug. You need to drill a small hole in the plug and thread a self-tapping metal screw into the hole you drill. Then you can grab the screw in the plug with pliers and pull the plug out.
You must drill very slowly and use just a little pressure on the drill so that when the drill is through the plug it will not go further and damage the idle mixture screw behind the plug.
When the plug is removed, you will see the slotted head of the idle mixture screw. Turn that screw counter clockwise to make the idle mixture richer.
I hope this helps. Let me know if you still have trouble understanding.
|