Nilfisk-Advance 21KB Service Manual page 27

Service Manual – PBU Propane Floor Burnisher
• Remove:
– Intake Manifold
– Engine Shroud
– Spark Plugs
• Unscrew the rocker cover bolts in the order
shown [1 to 5].
• Remove the cover [A] and the gasket.
• When removing the #1, #2 cylinder head, set
each piston at the top dead center (T.D.C) [A]
of the compression stroke.
• Remove:
– Rocker Arm
– Push Rod
– Rocker Arm Bracket
• Loosen the cylinder head bolts 1/4 turn in the
sequence as shown in the figure.
Caution: If the above procedure is
not followed, the cylinder
head may be warped during
removal.
• Repeat the sequence until all bolts are removed
and lift off the cylinder head assembly.
Note: Mark the push rods and rocker
arms so they can be installed
in their original position during
assembly.
Figure 21 Cylinder Head Assembly Removal
Figure 22 Cylinder Head Assembly Removal
Figure 23 Cylinder Head Assembly Removal
Engine System 27