Honda BF35A-BF45A Outboard Motors Shop Manual., Page 293Get this manual
From P2-1 1
2Stop the engine and check the
water intake screen for cloggingIs the water intake screen clogged?
Remove the foreign material and recheck
0 3Start the engine and check the
cooling system indicator with the engine idlingDoes cooling water constantly flow through the cooling system indicator?
Check the discharge port for clogging, clean the discharge port if necessaryCheck the water pump for wear or damageReplace or repair the water pumpCheck the water tube for clogging or damageClean or replace the water tube if necessary
w System is OK (engine temperature
cool down the engineCheck the overheat indicator lightDoes the overheat indicator light come OFF? NO was high)