2001 Mercury Mariner 50-60HP Factory Service Manual, Page 243Get this manual
CYLINDER HEAD
4Reconnect hosesUse sta-straps to fasten all hose connections5Reconnect the throttle and shift leversaBreather HoseTop Fuel HoseOil Sump Vent HoseThrottle and Shift LeversSta-Straps 6Install spark plugs and spark plug leads