You may have already seen our boats.com video on How to Change Lower Unit Oil on a Boat, and today we're at Norfolk Marine to run across how you lot change the engine oil on a 4-stroke. Let'south get started.

 Chris Breeden, Service Manager and Yamaha Master Tech: Okay, we've got the top off and we're in the store, we made sure we got the engine is up to operating temperature so we can get all the oil out of it. Next step, we're going to remove the dip-stick, set information technology aside, catch the tube (of the oil pump)...

Lenny: Hey, was a minute Chris, why don't you just use the bleed down hither instead of using an extraction pump?

Chris: Well, you lot can utilize the drain, merely the main thing is it's very messy, and if yous're doing service over the water it's merely not an pick, y'all have to take it out through the dipstick so yous don't make a mess.

Lenny: Skillful indicate.

Chris: Now you simply pump it until the oil's out. Now, we'll put a rag under the filter to try and go along the mess down, take your filter pliers, break the filter loose, and remove it.

Chris: Okay, now you desire to put a little oil or grease on the new O-band, and spin the filter on hand-tight. The final step is going to exist filling the motor with oil and checking the level. We have the oil changed and checked it and it'southward at the proper level, now we're set to roll.

Lenny: Hey, permit me enquire you lot something. An oil alter is not an incredibly complex procedure, only if you mess it upwardly, y'all pay big fourth dimension, don't yous?

Chris: Yep, the consequences are pretty severe.

Lenny: Then how does someone know if they should try this job or non?

Chris: Well, if they take a mechanical background and it's something they feel comfortable with, and they've done information technology on other things, they probably would be OK.

Lenny: Otherwise, we hope you take information technology in.

Written by: Lenny Rudow

With over two decades of experience in marine journalism, Lenny Rudow has contributed to publications including YachtWorld, boats.com, Boating Magazine, Marlin Magazine, Boating World, Saltwater Sportsman, Texas Fish & Game, and many others. Lenny is a graduate of the Westlawn School of Yacht Design, and he has won numerous BWI and OWAA writing awards.