Yamaha VMX12H Supplementary Service Manual page 202

NOTE:
sure all cam caps are covered with oil
plugs
mark on the cover should face
toward the exhaust side.
the head cover gasket and replace it
if damaged.
3. Tighten:
Bolts (cylinder head cover)
*Spark plugs
Cylinder Head Cover:
10 Nm (1.0
Spark Plug:
I
I
17.5 Nm (1.75
4. Install:
plug
*Special washer
Crankcase cover plate
NOTE:
Check for clog of oil passage
any, clean the oil passage.
V-BOOST
Install:
V-boost assembly
NOTE:
the O-ring
replace it i f damaged.
the bolts in a crisscross pattern.
10 Nm (1.0
7.2
12.5
in the bolt. If
on the V-boost, and
7.2
3-78