2004 SR Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 27Get this manual
PERIODIC MAINTENANCE PERIODIC MAINTENANCE SCHEDULE
PERIODIC MAINTENANCE SCHEDULE
The chart below lists the recommended intervals for all the required periodic service work necessary to keep the motor operating at peak performance and economyMaintenance intervals should be judged by number of hours or months, whichever comes first
NOTE: More frequent servicing should be performed on outboard motors that are used under severe conditions
INTERVAL
INITIAL 10 HRSOR MONTH
EVERY 50 HRSOR MONTHS
EVERY 100 HRSOR MONTHS WITH SAE 10-40
ITEM TO BE SERVICED