Product Instruction Manual
Page 46
... is refilled weekly monthly yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X FS 90, FS 90 R The specified intervals must not turn X X readjust idle speed Spark plug adjust electrode gap replace after every 100 hours of operation visual inspection X Cooling air intakes clean Valve clearance check and adjust if necessary, one time after 139 hours of operation...
... is refilled weekly monthly yearly if faulty if damaged as required X X X X X X X X X X X X X X X X X FS 90, FS 90 R The specified intervals must not turn X X readjust idle speed Spark plug adjust electrode gap replace after every 100 hours of operation visual inspection X Cooling air intakes clean Valve clearance check and adjust if necessary, one time after 139 hours of operation...
Product Instruction Manual
Page 51
...) FS 90, FS 90 R English Maintenance and Repairs Users of this unit should carry out only the maintenance operations described in some cases, by the STIHL parts symbol K. Original STIHL parts can be available for your STIHL dealer for information regarding special accessories that may appear alone on small parts. 49 ment mount): 7500 rpm Valve clearance Inlet valve: 0.004...
...) FS 90, FS 90 R English Maintenance and Repairs Users of this unit should carry out only the maintenance operations described in some cases, by the STIHL parts symbol K. Original STIHL parts can be available for your STIHL dealer for information regarding special accessories that may appear alone on small parts. 49 ment mount): 7500 rpm Valve clearance Inlet valve: 0.004...