Renewing Poly-V belt (every 60 000 km/36 000 miles) (Inspection III) 12 3 510 C000060 • Remove the cover. • Use the spark plug cap assembly tool from the toolkit to pull off the spark plug caps. • Use spark plug wrench, BMW No. 12 3 510 , to unscrew and remove the spark plugs. TDC C000070 1 • Remove the horn with its mount. • Remove front cover. • Remove vent line (1). 00.17