Troubleshooting a 19 HP Kohler Engine

Look along the right side of the 19 HP Kohler engine for its small spark plug, which should lies connected to a black spark plug or "ignition wire." This wire may have become disconnected if your machine's ignition system is not responding, so ensure that it has not. Reinsert the spark plug wire into the rear of the spark plug if necessary.

Check the end of the existing spark plug for any brown or black build up. This is corrosion that has harmed your plug and necessitates replacement. Disconnect the ignition wire from your spark plug to remove it, then slide the wire into the back of a replacement spark plug.

Trace the two terminal wires from the battery back to the 19 HP Kohler engine's solenoid. The red and black (positive and negative) terminal wires extend out from the battery's sides and lead back to the side bolts of the Kohler's solenoid. Ensure the wires are in place on these bolts.

Reconnect the battery's terminal wires to the sides of the engine's solenoid by placing the open end of each wire over the respective side bolts on the solenoid. Tighten each wire into place on each bolt with a socket wrench.

Check for a leaking carburetor bowl if your 19 HP Kohler engine is still having trouble starting or is starting and then sputtering and whining out. Find the carburetor bowl along the left side of the engine. The bowl is distinctively shaped and will be halfway up the motor's side.

Look on the bottom of the Kohler engine's carburetor bowl for a lone nut. This nut is likely leaking fluid. Place a pan under the nut to collect any fluid.

Loosen the bowl's nut with counterclockwise turns of a socket wrench. The excess fluid and build-up with the 19 HP Kohler engine's carburetor bowl will leak out of the bottom of the bowl and into your pan. Allow this process to finish.

Tighten the carburetor bowl's nut back up with clockwise turns from your socket wrench.