2006 Johnson SD 3.5 HP 2 Stroke Outboard Service Manual, PN 5006562, Page 46Get this manual
MAINTENANCE SPARK PLUGS
SPARK PLUGS
Spark plugs should be removed and examined periodicallyReplace wornfouled or damaged spark plugs Remove spark plugs and inspect condition Set spark plug gap on new, replacement spark plugs Apply Electrical Grease to the ribbed portion of the spark plug ceramic and to the opening of the spark plug cover to prevent corrosionSee table below for recommended spark plug data and gap setting
SYNCHRONIZATION AND LINKAGE ADJUSTMENTS
Refer to CARBURETOR SERVICE on p71
10-HOUR INSPECTION
IMPORTANT: All Johnson outboard owners are
encouraged to return their new engines to an authorized dealer for mechanical checkThis check should be performed after approximately 10 operating hoursThe cost of this check should be figured at local dealer labor rates and paid for by the engine ownerThe 10 hour inspection should check: Anticorrosion anodes functionality Water intake screens Overboard water pump indicator Steering operation Throttle and shift operation Emergency stop circuit and lanyard functionality Fuel system components, repair any leaks Fuel filter, eliminate any contamination Fasteners, tighten loose components Air silencer, clean and inspect Thermostat operation (68 model) Engine to transom mounting hardware Electrical and ignition wires and connections Synchronization and linkage adjustments