2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 33Get this manual
Periodic checks and adjustments 7Turn the engine off, and then check the oil level and correct it if necessary
2Remove the oil dipstick and oil filler cap 1
Replacing the oil filter
1Extract the engine oil with an oil changer or drain it
2Place rag under the oil filter, and then remove the oil filter using the oil filter wrench
S60C3060
3Place drain pan under the drain hole, and then remove the drain bolt and let the oil drain completely