Originally Posted by Patriot Services
Didn't have those problems with seats and guides when there was a little lead in the fuel.
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Back in to 90's Kawasaki got a bad batch of undersize valve seats on the FB engines..
Some lasted longer than others...but they all fell out...lots of warranties..
The other recurring problem they brought upon themselves was when the engineers decided to make the synchro rods out of aluminum instead of cast iron with a bushing.
The rods didn't hold up too well...