Just bought a 97 XP with a 787 earlier this year and last week had a problem where it wouldn't crank over, just "clunk" repeatedly and every once in a while actually crank the engine for a second or two (while spitting water out the back). Replaced the starter and the battery and then discovered I had a water flooded engine. Took the plugs out and it cranks over fine and sprayed water out of the spark plug holes. I read in the manual that part of the procedure is to drain and refill the counterbalance reservoir with 1 oz 30 weight oil. I have looked and looked for the drain and fill caps, but can't find them anywhere (not really sure what I'm looking for either though). When I bought it the guy said he had rebuilt the engine, and I'm thinking that perhaps somewhere down the line the owner put a pre-97 787 in it and thus it doesn't have the drain and fill plugs for the counterbalance reservoir. What will happen if I don't do this step of the process?
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Ok to not put oil in counter balance reservior after water flooding? 97 xp
- Thread starter bbanich
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Dr Honda
Well-Known Member
First... Welcome.
Second... you obviously have a chilton manual... because that's the wrong oil. You use 1 oz of 2-stroke oil. (not 30wt)
Third... not all of the 800's have a plug you can get to. So, if you can't find it... yours may not have a fill plug that is easy to get to.
Second... you obviously have a chilton manual... because that's the wrong oil. You use 1 oz of 2-stroke oil. (not 30wt)
Third... not all of the 800's have a plug you can get to. So, if you can't find it... yours may not have a fill plug that is easy to get to.
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colochoclab
New Member
Is this something than can be done easily, or is it something when doing a rebuild? (From the diagram, looks like it's done during rebuild?)
-Lab
-Lab
Dr Honda
Well-Known Member
It's not easy... but on some of the 800's, there is a fill plug that is on the side of the engine.
adamsbj123
New Member
C/B oil check
The 95-96 787's don't have plugs. Since yours is a 97 it should have them. You won't see them at first glance they are hidden. With no C/B oil you will cause major engine damage. It should be changed every 50 hours or whenever the engine is water flooded. There is a great article with pics at seadoosource.com/reservoircheck. I just changed the C/B oil as a maintenance item on my 787. I added 1 oz. of 30 wt motor oil per seadoo instructions. The drain plug is located on the left rear of the engine underneath near the mount. You will need a 5.5 or 6mm allen wrench socket ( can't remember) short extension and a ratchet. Use a rag to catch the oil coming out. Once drained be sure to put some sealer on the plug threads prior to installing. The fill plug is a plastic plug with a slot in it, You can feel it better than you can see it. It comes out easy with a long screwdriver. I used a medicine/cough syrup syringe to put the 1 oz. of oil back in it. Good Luck.
The 95-96 787's don't have plugs. Since yours is a 97 it should have them. You won't see them at first glance they are hidden. With no C/B oil you will cause major engine damage. It should be changed every 50 hours or whenever the engine is water flooded. There is a great article with pics at seadoosource.com/reservoircheck. I just changed the C/B oil as a maintenance item on my 787. I added 1 oz. of 30 wt motor oil per seadoo instructions. The drain plug is located on the left rear of the engine underneath near the mount. You will need a 5.5 or 6mm allen wrench socket ( can't remember) short extension and a ratchet. Use a rag to catch the oil coming out. Once drained be sure to put some sealer on the plug threads prior to installing. The fill plug is a plastic plug with a slot in it, You can feel it better than you can see it. It comes out easy with a long screwdriver. I used a medicine/cough syrup syringe to put the 1 oz. of oil back in it. Good Luck.
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adamsbj123
New Member
If your engine is a 95-96 787 the only way to add C/B oil is through a small hole in the crankcase with the cylinders removed. The C/B oil is added when the engine is assembled and that is all she gets. The procedure to drain and fill the C/B oil when the engine is water flooded does not apply to your 95-96 787 engine without major disassembly. I think Seadoo realized this mistake quickly and added the drain and fill plugs on all later models. I would just run it!
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