2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 54Get this manual
MAINTENANCE INSPECTION AND MAINTENANCE SCHEDULE Engine Maintenance and Inspection Schedule Frequency
Description
Electrical and ignition wires and connections, inspect synchronization and linkage, inspect and lubricate( Idle speed, check Valve clearance, check Gearcase lubricant, replace Engine oil, change Engine oil filter, replace Fuel filter, replace Gearcase lubricant, inspect fill level and condition Starter pinion shaft, inspect and lubricate Operator's Guide, review Propeller shaft splines, inspect and lubricate Spark plugs, replace Decarbonize Ignition timing, check Driveshaft splines, inspect and lubricate Water pump and impeller, inspectreplace
(1) Also recommended at 10-Hour Inspection (2) Emission-related component (3) Do not use light duty penetrating lubricants