Checking The Cylinder Head; Installing The Valves - MOTO GUZZI Stelvio 1200 NTX ABS Service Station Manual

Engine

Checking the cylinder head

Check that:
•
the faying surfaces with the cover and the cylinder are not scored or damaged, jeopardising
a perfect sealing.
•
Check that the tolerance between the valve guide holes and the valve stems is within the
prescribed limits.
•
Check the valve seats are in good conditions.
INLET VALVE SEAT DETAIL DRAWING
OUTLET VALVE SEAT DETAIL DRAWING
- If the width of the mark on the valve seat is larger than the prescribed limits, true the seats with a 45°
milling cutter and then grind.
- Replace the head in case of excessive wear or damage.

Installing the valves

NOTE
THE FOLLOWING OPERATIONS REFER TO REMOVING ONLY ONE HEAD BUT APPLY TO BOTH
HEADS.
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten
ENG - 140
Stelvio 1200 NTX ABS