Turn off your Troy-Bilt lawnmower. Open the front engine hood over the engine, if applicable. Locate the flywheel. This is a large, circular part that is covered by an iron "shroud." This shroud or cover features a number of bolts. Remove each bolt with a socket wrench.
Pull off the Troy-Bilt lawnmower's flywheel shroud to expose the flywheel and the parts underneath.
Find the lawnmower's magneto. The magneto sits on one side of the flywheel beneath the flywheel cover. A plastic flap is attached to this magneto. This flap is the Troy-Bilt lawnmower governor's flap. Take out the bolt holding the flap in place using the socket wrench.
Find the Troy-Bilt lawnmower's carburetor. The distinctive bowl of the carburetor can be found along the left side of the Briggs & Stratton engine. There is an eyelet on this carburetor that a rod from the governor is connected to. Pull the rod away from the carburetor's eyelet. This will disable the governor and increase your Troy-Bilt lawnmower's speed.