Honda BF35A-BF45A Outboard Motors Shop Manual., Page 411Get this manual
SPOOL VALVE, SLEEVE, VALVE B Check the siiding surface of the valve 6,spool valve, sleeve for damage, scratches and wearReplace if necessary
[I] SLEEVE
131 VALVE)
2-WAY VALVE
Check the 2-way valve for damage, scratches and wearReplace if necessary
2-WAY VALVE
OIL TANK
Visually inspect the oil seal installation section of the oil tankReplace the oil tank if scratched or damaged