Dumb Question #876 Valve Clearances

[ducpainter]

The pics are from a paper manual for M600/750, actual year unknown as for some strange reason Ducati saw fit to not put the year on the manual.

AFAIK, M600 was 1994-2001, M750 was 1996-2002.
So being totally literal, manual can be '96 to '01.

The allowance of closers up to 0.008" is really shocking, as they run quite crappy that way.

Then it would be prudent for people to ignore my last post.

[jjjrules]

Perhaps Ducati have two sets of values due to the fact adjusment is via shims in pre-determined thicknesess.

Having only one setting value would give rise to the possibility of not being able to set to the required value (ie: one shim up is too big - next one down is too small)

Having these 2 values allows the mechanic (or hack in our cases) to be within a wider range of acceptable tolerance.

The more common screw and nut type adjuster obviously allows a more finite adjustment therefore only one value is required.
My 2c anyway.

[brad black]

1989 400SS gives 0.10mm opening and 0 - 0.02mm closing, for example.  4v manuals can give a much greater range of confusion varying with both year and model.

as has been said previously, "checking" is the ducati specified acceptable clearance for checking.  if the clearance is outside that range, then you adjust to the "adjusting" specs.  simple.

of course, you may choose to ignore the ducati specs.

if you have enough shims (new and used) it's pretty easy to hit your target.

[SpikeC]

 Thanks for the elucidation Brad! It is now clear as whatever and makes prefect sense!