1200DOHC valve adjustment

[smartbear]

fatty

25000 sounds about right for every other shim/bucket engine. Course this isnt shim and bucket all they seem to have done is replace a screw with a shim so there is still a rocker in there which means more points of wear than cam/shim/ or cam/bucket for shim under bucket.

Valves shouldnt be sinking in the head since there are hardened valve seats in there. Anybody who has ever tried to cut these seats will tell you they are extremely hard. The valves should be hard as well. In short if say Yamaha can have a 26000 mile clearance check why cant BMW. I bet the S1000RR isn't 6000 miles as it would put servicing costs through the roof with the layout of that bike.

hi,i think part of the reason for the shorter mileage between checks on the GS compared to 4cyl superbikes is to do with valve sizes/weights
small light valves put less stain on the valve train/seats so are less prone to clearances altering.