How to Adjust a 25 HP Kohler Governor Engine

Engine Revving Low

Step 1

Set the engine on a flat work bench.

Step 2

Locate the governor spring to the right of the oil dipstick. The one side of the spring is connected to linkage with several adjustment holes and the other end is linked to the throttle.

Step 3

Pull the spring out of the linkage hole with the needle nose pliers.

Step 4

Move the spring upwards one hole towards the governor lever pivot point.

Step 5

Start the engine. If the engine remains throttling to low, shut off the engine and adjust the spring upward one more hole.

Engine Revving High

Step 1

Set the engine on a flat work bench.

Step 2

Locate the governor spring to the right of the oil dipstick. The one side of the spring is connected to linkage with several adjustment holes and the other end is linked to the throttle.

Step 3

Pull the spring out of the linkage with the needle nose pliers.

Step 4

Move the spring downwards one hole away from the governor lever pivot point.

Step 5

Start the engine. If the engine remains throttling to high, shut off the engine and adjust the spring downward one more hole.
References & Resources