Thanks for the link!
I am female and have 1996 xp 787cc rotax engine. I thought i was getting a good deal $600. ski with trailer. $2,500 and two years later finally enjoying it a little. Discovered it needed a new/rebuilt motor. Im pretty intelligent and mechanically inclined. Orginally had stepson working on ski. He removed old motor and parts that the shop did not want left on engine for the core replacement. When the new engine arrived he hurried putting it together and didn't bother to go through the rest of the engine, i.e. carbs were dirty, didn't clean Rave valves and several other things I can't recall. I am now the mechanic. Proud to say that it is running pretty good. Followed the break in procedure last year myself to be sure it was done correctly. I'm confident I did it right. Last year it ran ok but still needed fine tuning and oil started seaping out of the pto (vavle closest to the rear of ski) rave valve. Starter solenoid went out at the end of the season last year. The ski was very hard to start and had to use starting fluid 95% of the time before it would start. Discovered it had the wrong sprak plugs, (bpr8es) not (br8es). Starts much easier 98% of the time. It had a hesitation at 3/4 throttle. I kept reading about the rave valves, how easy they are to clean and it should be done annually. When I would push the valves while still in ski it seemed the rear one might not be opening. I cleaned and inspected both. The rear valve I did first, with the intention of doing one at a time.Not being famaliar with what the should look like or the parts inside, I took the other one out to compare. Good thing, the first, didn't have an o-ring on valve shaft. Both bellows & retaining spring looked to be in good shape. Put them back together and tested ski on lake. Rear valve leaked immediately and when I pushed on them it didn't spring back like the other one. I now believe the bellow is no good. Have rebuild kit on order. Before the valve cleaning and changing to the correct spark plug the ski ran good. Only a slight hesitation at 3/4 throttle and when the gas dropped below 1/2 tank. Now it has hesitation at all throttle positions and doesn't have as much power. I have not replaced gray fuel lines yet. The fuel filter is clean and inspected a few lines and didn't see the gummy substance that they should have. the carbs might need some tuning but I don't feel it is the problem. Dont know if Im comfortable doing that myself. Do you think the rave valves are still causing the hesitation, if one of the bellows aren't functioning? and it was harder to start with the wrong plugs but ran much better. I think it runs a little better each time I take it out.
Thanks jm
I am female and have 1996 xp 787cc rotax engine. I thought i was getting a good deal $600. ski with trailer. $2,500 and two years later finally enjoying it a little. Discovered it needed a new/rebuilt motor. Im pretty intelligent and mechanically inclined. Orginally had stepson working on ski. He removed old motor and parts that the shop did not want left on engine for the core replacement. When the new engine arrived he hurried putting it together and didn't bother to go through the rest of the engine, i.e. carbs were dirty, didn't clean Rave valves and several other things I can't recall. I am now the mechanic. Proud to say that it is running pretty good. Followed the break in procedure last year myself to be sure it was done correctly. I'm confident I did it right. Last year it ran ok but still needed fine tuning and oil started seaping out of the pto (vavle closest to the rear of ski) rave valve. Starter solenoid went out at the end of the season last year. The ski was very hard to start and had to use starting fluid 95% of the time before it would start. Discovered it had the wrong sprak plugs, (bpr8es) not (br8es). Starts much easier 98% of the time. It had a hesitation at 3/4 throttle. I kept reading about the rave valves, how easy they are to clean and it should be done annually. When I would push the valves while still in ski it seemed the rear one might not be opening. I cleaned and inspected both. The rear valve I did first, with the intention of doing one at a time.Not being famaliar with what the should look like or the parts inside, I took the other one out to compare. Good thing, the first, didn't have an o-ring on valve shaft. Both bellows & retaining spring looked to be in good shape. Put them back together and tested ski on lake. Rear valve leaked immediately and when I pushed on them it didn't spring back like the other one. I now believe the bellow is no good. Have rebuild kit on order. Before the valve cleaning and changing to the correct spark plug the ski ran good. Only a slight hesitation at 3/4 throttle and when the gas dropped below 1/2 tank. Now it has hesitation at all throttle positions and doesn't have as much power. I have not replaced gray fuel lines yet. The fuel filter is clean and inspected a few lines and didn't see the gummy substance that they should have. the carbs might need some tuning but I don't feel it is the problem. Dont know if Im comfortable doing that myself. Do you think the rave valves are still causing the hesitation, if one of the bellows aren't functioning? and it was harder to start with the wrong plugs but ran much better. I think it runs a little better each time I take it out.
Thanks jm
