Scarab 195 Open ID break-in or debris?

[Rbreaux]

Hi all and I’m happy to find the forum and participate!

Different answer from dealers and Scarab. New 2019 195 Open ID Rotax 300. Purchased from dealer in NC and had shipped to TX. We have 2 hours use in and we can not get past 5300 RPM and 10 MPH. In the first few minutes of operation it limited to this. We were in 2-6 feet of water. I trailered after first 20minutes. Nothing under in intake and no sign of any damage. That afternoon put it at marina and took it out again. Tried the reverse trick and still no change. Read everything I had and spoke to scarab and 3 different dealers. Dealer with most experience stated that I had to have sucked in debri. NC and Scarab thinks it could be a computer limitation for the break-in. The Rotax manual does say it limits to 7000 RPMs or less. Have 2 hours of putting around in the heat and am feeling lost. How difficult is a deeper dig into debris. Any advice is so appreciated on this Independence day weekend. Happy 4th from Rockport, TX

 

[Dean P]

Hi and to the forum. Please post pics of your new boat. We all love pictures.

Word is these new engines have a break-in period of 10 hours. Put some hours on her first and then open her up. But you should be able to get on plane. I would double check and make sure nothing is trapped at the impeller and the intake. Get a bright light to really see. Let us know what you see and find out.

 

[Rbreaux]

 

[Luc Lafreniere]

Personally, I'm doubtful it's the break in OR debris. Debris manifests itself by shaking/vibrating the boat pretty strongly at higher RPM/speed. Besides, you should be able to spot debris through the intake grate easily. The break in is indeed a thing for 10h I believe, but you should definitely be going faster as @Dean P mentioned. You just can't reach top speed for at least 10h.

No lights/errors on the display at all? I recently had a bad spark plug and it was very similar to what you're describing. But I had a code come up/light (I also could tell it was running a little rough beforehand since I know my boat well).

 

[Rbreaux]

No lights at all.

 

[tdonoughue]

Disclaimer: I don't have a Scarab...

I guess I could be convinced that the computer was limiting the engine to 5260 until 10 hours was up. But at that RPM you should be up on plane and doing 25 or so I would think, at least. Unless you are going upstream against a 15mph current... Got a pic of the intake grate?

 

[Rbreaux]

Will provide more pics on Monday.. thanks for the plane and 25 info!! Boats seem to be at such demand that service you are getting right now from dealers is so sad!!! I was thinking of pulling the end myself since it would be out if service for 6 weeks at nearest dealer

 

[Rbreaux]

Okay...got to 3 hours and no change. We hit the 5300 RPM at 3/4 throttle and then nothing going forward. No shaking and no lights. Nothing in intake((

 

[tdonoughue]

Might want to try posting to the Scarab part of the forum. Or to the General part. May get more ideas than here in tips & tricks...

 

[Lunarvrx]

It sure sounds like cavitation due to debris stick or weed in the pump. Break in period should only limit to 6500- 7000 ish well above 5300 based on my new VRX Rotax manual and actual experience. The debris can be very small and hard to see, but if it stays in there cavitation will continue. If it is not a Yamaha it needs to be on the ramp/ground for the inspection and removal. I have a long pair of needlenoses which I have used more than once with my former SeaDoo 180SE boat. Can limp home with debris usually but if you wrap a rope you usually need a water taxi tow. If you push it giving throttle even when heat alarming, it will overheat and melt the exhaust cooling system (PVC) then boat may sink. Often happens with SeaDoo rentals when the renters have no understanding of these consequences. Yamahas with their cleanout port usually avoid all these problems. Don't know why BRP has not adopted a clean out port for all Rotax engines.

 

[Jras72@icloud .com]

Hi all and I’m happy to find the forum and participate!

Different answer from dealers and Scarab. New 2019 195 Open ID Rotax 300. Purchased from dealer in NC and had shipped to TX. We have 2 hours use in and we can not get past 5300 RPM and 10 MPH. In the first few minutes of operation it limited to this. We were in 2-6 feet of water. I trailered after first 20minutes. Nothing under in intake and no sign of any damage. That afternoon put it at marina and took it out again. Tried the reverse trick and still no change. Read everything I had and spoke to scarab and 3 different dealers. Dealer with most experience stated that I had to have sucked in debri. NC and Scarab thinks it could be a computer limitation for the break-in. The Rotax manual does say it limits to 7000 RPMs or less. Have 2 hours of putting around in the heat and am feeling lost. How difficult is a deeper dig into debris. Any advice is so appreciated on this Independence day weekend. Happy 4th from Rockport, TX

Yes, they have a 3 hour break in period. Are you having any issues with yours? I have the same boat.