Daren and Heather
Jet Boat Junkie
- Messages
- 229
- Reaction score
- 185
- Points
- 132
- Location
- Prior Lake, MN
- Boat Make
- Yamaha
- Year
- 2020
- Boat Model
- AR
- Boat Length
- 21
Thanks for the tips!! 

We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!
Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)
Click Here for more information>Ride Steady group buy for JetBoaters.net members only
You can dismiss this Notice by clicking the "X" in the upper right>>>>>
@HangOutdoors .....YES!!!!! You should grease the bearing at 10 hours. Then at 100. There is a lengthy thread on here about this and the reasons for it. Follow the advice on the thread.Greasing the bearing can go either way. Two dealers here say they don't do it till 100 hr service. Yamaha has went back and forth on it a couple of times. The serviceman I asked says he sees blown rubber seals a lot on newer boats because people over grease them. He recommended to leave it alone for now. They wouldn't have done it at 10 hr service. That is one of the reasons I decided to do my own 10 hr. and save some money.
TBH I am approaching 30 hours and will probably be at 100 hr service in the next 6 weeks. I mean honestly how may times can the kids get pulled around the lake??? 4-5 hours each time we go out till they can hold the rope anymore.
Again you need to read up on it and decide for yourself or let the dealer service decide for you.
@Daren and Heather .....your dealer needs to go back to technical school. Your oil and filter should be changed ar 10 hours, your bearing should be greased and there are a list of checks that need to be done. BTW don't do this and see how well yamaha responds (not) to a warranty problem later. I also changed the plugs at 10 hours. The manual is very specific. If you want to do it yourself, fine, use genuine yamaha parts and save your bills as documents that you had it done!So.... I just emailed my dealer about the cost of the 10hr service change, and here's what he emailed back to me... Any truth to this??
"I recently found out that for 2020 they changed that from the 2019 model and just the standard 50 hour oil change , no after break in oil change required anymore"
I find this surprising if true. I'll email him back and ask what his source is.
Just called the closest dealer to me which is about 2 hours. Price for 10/20 service is $626. ... Any harm in waiting until the start of the next season to perform the service with or without plug replacement? I'm done for the season and the boat will just be sitting. Didn't know if I should go ahead and do it now or just wait until I'm ready to start next season. Thoughts? After the initial service, I plan to do plugs and oil myself.
@HangOutdoors .....YES!!!!! You should grease the bearing at 10 hours. Then at 100. There is a lengthy thread on here about this and the reasons for it. Follow the advice on the thread.![]()
@Daren and Heather ......respectfully suggest that you never use anti-seize on your spark plugs as it could damage your the threads in the head as the anti-seize will allow the plugs to be over torqued. There is a lot of information on this topic that should be read. IMO do not use thread anti-seize. I do not allow it on my yamaha products. As well, sorry again to disagree, but stating your spark plug torque "feels right" is just asking for trouble. You must use a torque wrench set for your engine head's setting. When reinstalling a new spark plug I would also use a longer adapter handle with no ratchet on it to better control the seating of the spark plug so it doesn't wobble as you try the initial seating. Some technicians use a piece of rubber hose to get a better feel and so that it can twist if the plug tries to cross thread. Once the plug has been seated (just snug) snap your ratchet head back on then set the torque to the specific setting for your head.Here is the 2nd part video I captured while doing the rest of the 10 hour service, including spark plugs and other things the manual says to inspect.
First thing I do is remove the plugs from a new engine and never seize them as well as dielectric grease the coil boots, then spray white lithium grease on the engine block and all electrical connections.
I never use a torque wrench, I also coat the oil filters with white lithium to prevent rust as well as the hose clamps, I also add ZINC to the pump and ride plates, coat the exposed cables at the pump with bees wax.
Custom build my special intake grate to keep weeds from clogging the intakes for the pumps thus avoiding having an engine overheat from weeds. Add my Jeff cruise control and add an electric trolling motor specially designed quick release fitting so I can run a trolling motor on my skies quickly and easily remove it when I do not need it or put it back on when I want to. Also add gear lube to the jet pump and the intermediate bearings. And add my custom built video camera mount to the front. I obviously add my special patented steering system before it ever hits the water.
@Cobra Jet Steering LLC .....love your posts - would REALLY love to see a picture and some specs of your custom intake weed-annihilating grate unless it is about to debut as a new patented product. Respectfully, I disagree regarding not using a torque wrench. Waaay back the early ones might not have been as reliable - but for the last 15 years (at least) they are almost infallible. Steel spark plug threads and aluminum heads are a recipe for an expensive disaster. Just a bit too much torque and the threads strip and IMO at that point there is no decent alternative but a new head - yeah I know the repair possibilities but IMO they are crap. I have seen faaar too many oh $hit moments when a hot shot technician has damaged a head even on $100K racing engines. Why, Why, Why take the chance? Once you have had that feeling - when a head is stripped by a $10 plug and your heart drops - no one would ever "hand tighten" a metal plug into an aluminum or composite head, again. I use torque wrenches for EVERYTHING. BTW.....Yamaha specifies their use when installing spark plugs as does Riva Racing....so with my 5 year warranty I strip my head (99.9% impossible with a torque wrench) what do you think would happen? You seem like a very, very technology-embracing guy, I just can't figure out the no torque wrench, particularly on something so prone to stripping? P.S. No one should ever use thread ease on any aluminum block engine. The plugs should be changed frequently enough to obviate that and if you are getting corrosion that makes the plugs "stick" you have another problem to solve. - or you have waaay overtightened them which wouldn't happen if you used a torque wrench.....My 2 cents ......maybe given the length - my 25 cents.First thing I do is remove the plugs from a new engine and never seize them as well as dielectric grease the coil boots, then spray white lithium grease on the engine block and all electrical connections.
I never use a torque wrench, I also coat the oil filters with white lithium to prevent rust as well as the hose clamps, I also add ZINC to the pump and ride plates, coat the exposed cables at the pump with bees wax.
Custom build my special intake grate to keep weeds from clogging the intakes for the pumps thus avoiding having an engine overheat from weeds. Add my Jeff cruise control and add an electric trolling motor specially designed quick release fitting so I can run a trolling motor on my skies quickly and easily remove it when I do not need it or put it back on when I want to. Also add gear lube to the jet pump and the intermediate bearings. And add my custom built video camera mount to the front. I obviously add my special patented steering system before it ever hits the water.