I know this sounds like a silly question but I am quite serious. I am getting the Volt 20" fat tire mariner mountain trail bike in the next week or so. I am planning on running this bike on both beach sand and dirt trails. I am concerned of the best way to clean sand and debris from both the rear motor hub and the gear casing area and the chain. Is it safe to hose the back area down with water without damaging the motor. What the best way to get sand out of the chain and gears. What is the proper maintenance procedure.