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I heard there were 3 recalls on '88, '89, and '90 Exciters all regarding the fuel system.  Does anyone know anything about these, or can anyone tell me where I could find out this information?
 

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Yamaha updated the carbs on the 87 Exciter from butterfly Mic. to the 38mm round slides Mic. with a power jet.
88 Exciter came stock with the 38mm round slide with power-jets
The 88's had a update to plug off the power-jet and rejet the main.
I think PSI was the first to find the problem, and it was a mid range lean spot from the needles.
 
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