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10 MPH maximum speed for 7000 rpm and vibrate

ddonoso

Well-Known Member
Messages
19
Reaction score
2
Points
62
Location
CT
Boat Make
Yamaha
Year
2022
Boat Model
250
Boat Length
25
My 2017 AR goes at 10 MPH maximum speed for 7000 rpm and vibrates. It goes away after we stop for a while.
 
something is in the pump or around the driveshaft
 
Cavitation. You’ve got something in your pump.
 
X3 on sucking up something. Pull the cleanout plug and inspect the driveshaft, intake grate and tunnel.
 
...and stop running it up to 7000 rpm. Until it's cleared/addressed, you aren't going to go any faster by giving it more gas, and you may be creating bigger problems for yourself
 
This happens to me every once in awhile. Use the reverse trick (search in forums) and it clears it every time.
 
Where the pump?
 
You propulsion pump that makes the boat go
 
X3 on sucking up something. Pull the cleanout plug and inspect the driveshaft, intake grate and tunnel.
I'm new to boating, how do I do that?
 
You need to find, download & read the owner's manual for your boat. You cannot just blindly go out without knowing more about your boat, and having at least some working knowledge of the proper operation of your boat, and something to look to, in order to troubleshoot problems that very well could have you stranded and/or potentially in peril.

I'm not trying to be the "RTFM" guy, but your responses read like you haven't investigated how your boat works prior to taking it out on the water.
 
I'm new to boating, how do I do that?

On the upper swim platform section there is a hatch. Unlock the two handles and open the hatch. In the center of your hatch, cleanout tray is a hole housing the cleanout plug. Release and remove the big plug. Once removed you will be able to look down into the jet tunnel forward of the impellor. Inspect the area for any debris and remove any weeds, line, rope, wood chips, toothpicks etc. from the driveshaft and impellor. Once done reseat and lock the cleanout plug. Close and lock the hatch and you should be ready to go.
 
Last edited:
Or get it on a trailer and look inside the big hole in the back that normally looks like an open fire hydrant when the engine is running.

Shine a flashlight in the grate under the boat as well. Looks like a pasta strainer. Pretty sure you have something in there, and if it went away, it blew out.
 
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