Plugs, valves, oil and a few other small things is all the major maintenance needed. Here’s what I do. (The additions in red in the PDF are my notes.)
Every 12,000 miles:
Engine Oil & Filter, 4.2 qt
Check Brake Fluid – DOT 4
Check Clutch Fluid – Vitamol V10
Replace Air Filter Mahl 98412
Adjust Valve Clearance
Throttle Sync
Every 24,000 miles/2 years
Replace 4 Spark Plugs NGK DCPR8 EKC 16mm socket, 23 nm
Replace Gearbox Oil, 900ml, 30 nm
Every 36,000 miles/3 years
Replace Alternator Belt
Every 48,000 miles/4 years
Replace Brake Fluid DOT 4
Replace Fuel Filter (external)
Replace Final Drive oil (GL5 Syn)