Yamaha F100B F100C Outboards Factory Service Manual, Page 57Get this manual
Maintenance interval chartTop cowlingFuel system Top cowling Checking the top cowling
1Check the fitting by pushing the cowling with both handsAdjust if necessaryS60C3730
Fuel system
S60C3010
Checking the fuel joint and fuel hoses (fuel joint-to-carburetor)
1Remove the plate 1, and then check the fuel hose connections and fuel joint for leaksReplace if necessaryAlso, check the fuel filter 3, fuel pump 4, and carburetor for leaks, and the fuel hoses for leaks and deteriorationReplace if necessary
2Loosen the bolts 13Move the hook up or down slightly to adjust its position
S60C3020