Valve Seat: Service and Repair

Valve seats
Use a milling kit with T-wrench, locating shaft for valve seat cutter part no. 83 95 097, -> cutters part no. 78 61040 (45˚), part no. 83 93 936 (60˚) and part no. 83 95 105 (70˚).





1 - Exhaust valve





2 - Inlet valve

Valve seat angle:
45˚

Regrinding angle:
60˚ (exhaust)
71&ring (intake)

Valve seat width:
1.4 - 1.8 mm (exhaust)
1.0 - 1.4 mm (intake)