Just Use Water

When cleaning the plastic components on your power tools and equipment, always and only use water (i.e. a damp cloth) to clean them. Using chemical solvents will damage the integrity and functionality of the plastic parts and pieces on your tools. – This, of course, means you must replace them. So, do right on all counts by using only water to clean your power tool’s sensitive parts.  

It’s also worth noting here that you should clean your power tools often. Regular maintenance contributes to the overall well-being and longevity of your equipment.