2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 48Get this manual
INSTALLATION AND PREDELIVERY RUNNING CHECKS
Tachometer Pulse Setting
Confirm accuracy of tachometer reading Adjust dial on back of tachometer to pulse12 pole setting
Operating Temperature
An outboard running at idle speed should achieve temperature based on the engine's thermostatic controlIn general, the powerhead temperature should reach at least 100F (38C) after five minutes of idling Confirm that the powerhead reaches idle temperature