I dont have an Africa Twin but I have a manual... Wheelbase is stated as 1565mm (centre to centre on axles). Difficult to see chain adjuster position but I think it is in the middle, another reference point is the Rear Caliper support, the measurement point on the rear axle aligns with the lower rear most edge of this.
Also to check your Fork Spring Lengths....
Upper Spring.. 68.3... limit 66.9
Lower Spring.. 564.1... limit 552.8
Front Mudguard... ensure fork bridge is fitted with Arrow facing forward.
Last edited by DarrenM; 13 Jan 2009 at 13:21.