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• Polaris Genesis 750 Jet Ski User Manual

I purchased a 1999 Genesis. After riiding it for 2 hours the engine locked up. After tear down I found the # 2 piston had a hole in it. That is just the start of the bad news. The connectind rod was blued and came apart arounf the crank pin. The engine case is broken.

I paid $1900. For the ski, its clean. I can part it out or go for a new engine. The guy I bought it from had the carbs rebuilt. I gues the jetting on the middle carb is the root cause of this disaster. What do I do?

Polaris 750 Jet Ski Manual

Im an old 2 stroke (motorcycle) mechanic and boat owner for the past 10 years. I can fix stuff but dont want to throw good money after the bad. Fix it or part it out? What does a case cost? I see rebuilt crank kits for $400.

Hi Jerry: This is a fitch fuel injected model so no carb. Ileft the machine there for 2 yrs to be fixed.

The dealer/owner had a accident and couldn't work for quite a long time so i let him take his time. He and his brother,a skilled engine man tried to take the time to find what caused the first failure. They never found the cause. I got it back used it less than two hrs when it started slowing down like something was out of lubrication. I pulled into a dock and there was oil in the bilge.

It started and would run at idle speed allowing us to get to a ramp and take it back to the dealer. He kept it over the winter and summer and I got it back about the end of sept. He said he put another 1 $1600 in parts & labor and said I could have it but never bring it back. We got another 2 hrs on it and it started slowing down again.we got it home and stored it.

I started to prep it to try again when I noticed maybe 3 cups of oil in the bilge.oil lines appear to be ok.is there a seal somewhere that could have blown? I think the piston may still be ok.but may be damaged.she wants to start.I've added syn oil in the gas this time.still scared it may blow a piston.nobody wants to work on it; must be a known lemon. I'd love to sell it if she ever runs decent again!

Thanks a million for answering; where do I go from here? Thanks Jerry I appreciate every word. I'm still in hopes that someone out there had the same issue and finally found the cause. It's crazy that a dealer who is usually great at engine problems just throws his hands up and gives up on this problem. I should have taken it back to him and insisted on him fixing it or refunding at least a reasonable amount of money. I also wonder if anyone has ever thrown in another polaris engine that had good luck with a substitute.

The pwc is a great design, we liked it a lot. Thanks Arnie.

Polaris Jet Ski Manuals Free

I purchased a 1999 Genesis. After riiding it for 2 hours the engine locked up. After tear down I found the # 2 piston had a hole in it.

That is just the start of the bad news. The connectind rod was blued and came apart arounf the crank pin. The engine case is broken. I paid $1900.

For the ski, its clean. I can part it out or go for a new engine. The guy I bought it from had the carbs rebuilt. I gues the jetting on the middle carb is the root cause of this disaster.

What do I do? Im an old 2 stroke (motorcycle) mechanic and boat owner for the past 10 years. I can fix stuff but dont want to throw good money after the bad. Fix it or part it out?

What does a case cost? I see rebuilt crank kits for $400. Hi Jerry: This is a fitch fuel injected model so no carb. Ileft the machine there for 2 yrs to be fixed. The dealer/owner had a accident and couldn't work for quite a long time so i let him take his time.

Polaris Genesis 750 Jet Ski User Manual

He and his brother,a skilled engine man tried to take the time to find what caused the first failure. They never found the cause. I got it back used it less than two hrs when it started slowing down like something was out of lubrication. I pulled into a dock and there was oil in the bilge. It started and would run at idle speed allowing us to get to a ramp and take it back to the dealer. He kept it over the winter and summer and I got it back about the end of sept.

He said he put another 1 $1600 in parts & labor and said I could have it but never bring it back. We got another 2 hrs on it and it started slowing down again.we got it home and stored it.

I started to prep it to try again when I noticed maybe 3 cups of oil in the bilge.oil lines appear to be ok.is there a seal somewhere that could have blown? I think the piston may still be ok.but may be damaged.she wants to start.I've added syn oil in the gas this time.still scared it may blow a piston.nobody wants to work on it; must be a known lemon.

I'd love to sell it if she ever runs decent again! Thanks a million for answering; where do I go from here?

Thanks Jerry I appreciate every word. I'm still in hopes that someone out there had the same issue and finally found the cause. It's crazy that a dealer who is usually great at engine problems just throws his hands up and gives up on this problem. I should have taken it back to him and insisted on him fixing it or refunding at least a reasonable amount of money. I also wonder if anyone has ever thrown in another polaris engine that had good luck with a substitute. The pwc is a great design, we liked it a lot. Thanks Arnie.