According to the Service Manual that I have for the GSF1250/S/A/SA, Page 0B-5, a inspection is required at the 1000km (600 mile) service.
Valve Clearance Inspection and Adjustment
B718H10206006
Inspect valve clearance
Initially at 1 000 km (600 miles, 2 months) and every
12 000 km (7 500 miles, 24 months) thereafter.
Inspection
Valve clearance adjustment must be checked and
adjusted, a) at the time of periodic inspection, b) when
the valve mechanism is serviced, and c) when the
camshafts are removed for servicing.
This statement contradicts the Scheduled Maintenance chart on Page 0B-1.
It pays to check to manual text rather than rely on the service chart.
You decide for yourself.