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I have bought a Jet N Cat powered by Yamaha 650 engine and pump, the shaft was being cut (don't know why) and all pump elements apart. I would like to buy a new shaft and change my pump bearing and seals but I do not have any idea of what model of Yamaha I should refer to to get these parts? Can anyone help ? Thanks and regards.
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Re: Yamaha Jet N Cat
we dont have any paper work on your craft to help i.d the parts used. Do a little research on line or send us a few pics of the old parts and we will try to match them up.SBT Tech Support is here to help with your problems.
We try to answer each question quickly and accurately.
Please do not use Private Messaging for Tech Support, use the forums. -
Re: Yamaha Jet N Cat
Tahnk you very much for your support and my apologies for late reply on this subject. I have attached a picture of the rear side of the shaft (the only piece I have as it has been cutted), the pump and the duct intake if that can help. I have re-assembled the duct intake, impeller housing and pump and made a measurement : it looks like that shaft should be measuring around 85 centimetres. I have made some research on internet and some people say that this is the engine and propulsion of the wave runner III 1991 to 1995.
Shaft measures are as follows :
inside pump bearings axle diameters front and rear : 25 mm
Lenght of the front bearing axle : 38 mm
Lenght of the rear bearing axle : 17 mm
Impeller thread diam : 20 mm
Shaft diam : 18 mm
Pump :
Outer oil seal diam : 42 mm
Inner diam : 25 mm (bearing axle diam)
Impeller diam : 145 mm
Looking forward to reading from you very soon.
Best regards,
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