I just bought the machine last night. Very pleased with it and does exactly what I need it to right now which is drive/yard plowing.
I noticed a small switch added to the left side bottom corner of the dash and apparently its a mod that allows a fan to be switched on for rad cooling if idling for long periods or driving slow.

The issue I have noticed is that when stopped, the speedo can read 18-24kph and fluctuates between these speeds.
I flicked the switch mentioned above a couple times and the speedo settled down, but when it did it again, flicking the switch had no effect.

Any thoughts on the solving this?