Search results

What i am saying is that the mechanic at the dealer said that when he has seen problems with the mid shaft bearing/seals the skis typically have cavitation as the symptom, more so than leaking. i guess this doesn't really mean anything because water is getting in there somehow. When the ski...

oh, why didn't i think of this?

The shaft stays in place when the pump is pulled and just sticks out the back of the transom like other yamaha sit downs. The splines on this shaft join with the splines on the forward (towards the bow) inside of the impeller. When you put the pump back on you line up the splines and slide...

the siphon hose sticks out the transom and connects to a tube connected to the reduction nozzle. i have the service manual and it is for sure hooked up as it was and as per the manual. the only thing in that regard that is not the same as it was is that the hose connected to the tube on the...

My SJ4 is taking on water. If i ride it for about 20 mins it can have as much as 3 inches depth in engine compartment, so we are talking about many liters in just that time. I secured it to a jet ski lift and let it sit for half an hour or so, and there was barely any water at the low point...

lol, I think black looks cool. I got Destroyers in black for the SJ4. The Destroyers were recommended here. They seem good and I am happy I got them.

Thank you for your replies, BK. Sorry for these long posts. I hope at least a few here will not find them boring. The primary reason for wanting the metrics at this time is so I can try to get an empirical understanding of exactly what are the performance implications of the aftermarket...

Ok, so as I mentioned above I bought a Maptuner Nano and tuning license including access to the Riva tuning libraries. I have setup the Nano tuner device and the MyAppTuner phone app, and then connected to the SJ4 ECU using the Nano ECU programming cable and added my SJ4 as a vehicle to my...

No, I have captured no metrics so far. I am interested and seems fun, so I would like to. What is a good way to do so?

I have recently swapped the stock impeller for a Solas concord 12/17 that is at 13/16 installed. I purchased a Maptuner Nano and a license to Riva’s library. I will use a pump gas tune. @tomski had advised that the main change in this would be to increase RPM limit from 8000 to 8500, and...

what do you mean?

Yes, WORX does have an intake kit that is very similar to RIVA’s. So much so that from pictures the ECU and electronics mount plates seem to be pretty much identical. They both however include an air filter / flame arrestor and an oil breather catch can. I was already trying the Macsboost...

put it back together torquing all to specifications. Sounds a lot better. I figure previously the impeller was just not tight enough. Probably would have been ok once riding but I feel better about it now.

Thanks for this. That is calling for it to be much tighter than for sure I did it the first time. I will use a torque wrench this time! It is weird about the Locktite though because the Solas instructions that came with it said to use either grease or anti-seize. I used a very tiny...

A few weeks back I swapped SJ4 stock impeller for a Solas Concord to go with a stage 1 type tune (using maptuner nano). I have been doing some other things with it as well and so today was first time I ran it to warm it up to do an oil / filter change. I noticed what seemed like a metal...

Yeah, thank you. I had already found the part number online but this alone doesn’t really help for specifications such that I could figure what I might use as a replacement without getting the actual part. I knew the bolt type / thread size but I did not know the length. As it turns out I...

I am embarrassed to say but as of this moment I have misplaced the 4 bolts that fasten the reduction nozzle to the back of the pump case. I am hoping someone can please tell me the exact specifications for these in case I need to replace them tomorrow?

Ok well I managed to take it off. I don’t know if what I did was right way but it seems to have come off without anything being damaged, so I figure ok. What I did is illustrated by the next three pics. Of course you have to imagine that the case is in place, but essentially I pushed that...

Trying to upgrade the stock impeller on my 4-stroke SJ, and have removed the 5 bolts that fasten the pump casing to the rear of the shoe, but the casing is sealed on there super tight. I have wacked it with a rubber mallet and tried to pry it loose but so far no joy. Any tips for how to get...

what do you figure is best way to connect electrical wires for say connecting up bilge pump switch? not meaning for multi-pin type applications. i have always soldered and shrink wrap, but do you figure there is a better way?