Unresolved cylinder-head bolt torque: The DS900X engine manual gives 5 N·m + 15 N·m + 90° + 90° for the M9 cylinder-head bolts on physical PDF page 11, but 5 N·m + 10 N·m + 90° + 90° on physical PDF page 71. We cannot verify which sequence is correct; neither is selected here.
Dealer-grade workshop manual for the DS900X's 895 cc parallel-twin engine. Note: this is the same engine Loncin builds for BMW's F900 GS / R / XR - a slightly different state of tune but mechanically near-identical. Many of the procedures here translate directly to BMW F900 work.
Companion to the chassis service manual. Together they form the full dealer-level repair package.