1987 or 88? FZ750 - Yamaha Forum : Your Yamaha Motor Products Community & Resource
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Go Back   Yamaha Forum : Your Yamaha Motor Products Community & Resource > General Forum > General Bike Discussion > Mechanical / How To

Mechanical / How To For General Mechanical / How To that apply to all bikes.

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Old 04-17-2012, 09:46 PM   #1
ddnova
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Join Date: Apr 2012
Bike: 1987-88 FZ750
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Default 1987 or 88? FZ750

Been reading some of the great forum you have here and have a couple of questions I\m hoping someone can help me with. I recently purchased an FZ750 Genesis but the person I bought it from knew little if anything about the bike (owned it for a year)he bought it from a friend who now lives elsewhere and he couldn\t answer most of my questions, because of this I got the bike relatively cheap. It runs fine (won\t idle when cold but fine when warm).
The bike is registered as an \87 but when I run the VIN at Yamaha-motor.ca it comes up as an \88 FZ750 Genesis. Now the bike has a 4:1 exhaust with a Yosh can and a K&N filter, I was curious if the previous owners knew to up size the main jets so I removed the bowl from an outside and inside carb and took out what looks to be 108 main jets but I can not see where Mikuni made 108 jets (thought 105 but definitely says 108) What are the stock size jets as I have read 3 different forums stating 3 different sizes. K&N is the only place where I can see made 108 size mains (maybe has a kit already?). And if you can are there any concerns with FZ\s of this year I should watch for?
Thanks a bunch for any help anyone can give me, very much appreciated.
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Old 05-01-2012, 06:15 AM   #2
bwz1a
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Location: Sydney Australia
Bike: YZF 750
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Default 87 or88

Hi if the bike has been sitting for some time it may have blocked idle jets?? hear in Aus if its complied LATE 87 its an 88 model? good luck mate
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