HRC NSF250R 2012, Owner'S Manual & Parts List

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4-39
Engine Servicing
(1) CAMSHAFT HOLDER A
(2) CAMSHAFT HOLDER B
(3) O-RING (1) INTAKE CAMSHAFT
(2) EXHAUST CAMSHAFT
(3) INDEX LINES
(1) INDEX LINES
Place the piston top dead center.
Apply molybdenum oil solution to the cam lobes,
journals and thrust surfaces.
Install the cam chain over the cam sprocket, then set
the intake and exhaust camshafts to the cylinder
head.
Make sure that the index lines on the cam sprocket
are flush with upper surface of the cylinder head and
facing outward as shown.
Install a new O-ring to the camshaft holder B groove.
Apply molybdenum oil solution to the camshaft
journals.
(1)
(2)
(3)
(2)
(1)
(3)
(1) CAMSHAFT HOLDER A
(2) CAMSHAFT HOLDER B (3) HOLDER BOLTS
(4) COPPER WASHERS/BOLTS
Apply engine oil to the camshaft holder bolt threads.
Install the camshaft holder A and B to the cylinder
head, then install the copper washers and holder bolts.
Tighten the holder bolts in a crisscross pattern start-
ing with dowel pin side.
Tighten the holder bolts to the specified torque.
Torque: 12 N•m (1.2 kgf•m, 9 lbf•ft)
(3)
(4)
(1)
(2)
(1)