Topic: CB750k4

[grajaguar]

how do I sync. the 4 slides on my carbs. fact #2 is fixed cannot move right? do I adjust 1,3,4. to the same height as #2.?   I notice #2 is a bit higher than the other 3 the bike is 74, cb750  4,800 miles just bought it , first time its run since 1986  thanks, Graham

[TwoTired]

You attach vacuum gauges to the intake ports and adjust the slide height till the vacuum gauges read the same.

The newer PD carbs don't have adjustments on #2.  But, the earlier ones should.  ... I think..

[Borkunit]

My K4 is adjustable on all 4 carbs (assuming that I have the original carbs).

[grajaguar]

i did'nt want to force #2 to loosen , maybe a liittle heat on the thread lock will do it. yes the carbs are original. thanks for your input, has any one else had to apply heat to the thread lock?

[hopterfixer]

All four carbs will adjust.  Put some penetrant/lubricant on the nuts, let it sit, and use six point box end wrenches to break it loose.  Good Luck.

[grajaguar]

 Thank you everyone,   #2 adjustment nut is loose, problem solved.now I can get on with synchronizing   the carbs.