[header] How to run a boat motor out of water [title] Read your manual before starting the motor out of water. [step] Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose. If not, you'll need a set of motor muffs. 
[substeps] Most manufacturers' recommendations for flushing or running a motor out of water are similar. However, you should still check the specific procedure for your model.