IMHO, use brake clean on one thing – the brakes.
Cleaning your kart is very important. Clean enough to eat off is best. While you’re at it, you can check for loose nuts, cracks in the frame and worn parts.
We use a very light spray of WD40 on most everything metallic. Not the brakes. Never on plastic ie tank/bodywork/airbox. A little thicker WD around the chain and sprocket area.
Wipe clean, starting at the front of the kart (less dirty) and work your way back.
Spray orange Zep (you can get at any Home Depot) on everything plastic. Diluted 50% w/water.
Wipe clean.
For a finishing touch, get Motul spray shine and go. This makes the plastic look great (smells great,too)
Never let the cleaning go – you’ll regret it – promise! A clean kart is a happy kart.
Stu