1983-1985 Original Honda ATC 200X Shop Manual, Page 174Get this manual
BRAKE MECHANISM
BRAKE FLUID REPLACEMENTAIR BLEEDING
Check the fluid level with the fluid reservoir parallel to the ground
UPPER LEVEL
CAUTION: Install the diaphragm on the reservoir when operating the brake lever or pedalFailure to do so will allow brake fluid to squirt out of the reservoir during brake operationA void spilling fluid on painted surfacesPlace clean shop towels over the fuel tank whenever the system is serviced
LOWER LEVEL UPPER LEVEL