1982 XZ550 RJ Carb Setup Notes From Yamaha Tech in 1984 Stumble Fix

[dpequip]

Attached are scans of setup notes from a Yamaha Tech Rep. from 1984 when I worked at a Yamaha dealer.  This was straight from the source to solve the stumbles that were a common complaint.

[QBS]

Thank you for the notes, what a find.

Please expound on the air bleed filter and what is does at 4.5k-5.0k rpm.

[Lucky]

QBS, if you look at the fron't & rear carb tops, one of the air bleeds on the front carb is sealed with a brass ball (BB) where it is open on the rear.  that passage is drilled & taps out to the filter.  the reason for this is to avoid that main bleed for the front carb being affected by the operation of the flapper & associated pressure changes.