Tuning 460

[Porkchopper]

I just installed a older style muffler on my 460 so I would get better flow. Do I need to adjust my carb. Right now the H is all the way counter clockwise. Been like that since new. Any help would be greatly appreciated.

 

[ccicora]

You will need to pull the limiter caps, then remove the knobs on the caps, replace caps and adjust carb to a proper setting

 

[Porkchopper]

So it does have limiter caps?

 

[Porkchopper]

I removed the cover so I could get to the carb and the H and L are both red knobs that I can't figure how to remove. They are flush with the carb. Do I need to pull apart the carb or what?

 

[sedanman]

Those red knobs are the limoter caps. They pull right off if the screws are turned counter clockwise until the little tab on the limiter cap lines up with a slot in the carb. Stihl makes a tool with lefthand threads to make this easy but it is possible without the tool. Put a screwdriver in the slot in the cap and turn it until you can see the tab in the slot in carb body. Take a needle and lodge it in the slot to keep the cap from turning to the right, drive a small sheet metal screw into the center of the cap. When you think you have a good bite on the cap grab it with pliers and pull it straight off. If you were closer I would lend you the tool.