2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 47Get this manual
MAINTENANCE COOLING SYSTEM Install flushing adaptor and garden hose
Water Intake Screens
Inspect condition of water intake screensClean or replace as neededVerify function of overboard water pressure indicatorClean or replace hose or nozzle as needed
6 HP Models
1Water intake screen 2Overboard water pressure
TYPICAL
32894 DRC4952
Additional Maintenance