Honda CRF150R 2020 Owner's Manual & Competition Handbook page 64

Valve Clearance
Camshaft Holder Assembly Installation
1. While holding the cam chain, rotate the
primary drive gear bolt (1) (crankshaft)
clockwise and align the punch mark (2) with
the index mark (3).
(2)
(1)
(1) primary drive gear bolt
(2) punch mark
(3) index mark
2. Install the newly selected shims (4) on the
valve spring retainers (5).
NOTICE
Do not let the shims fall into the crankcase.
(5)
(4)
(4) shims (5) valve spring retainers
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Servicing Your Honda
3. Apply molybdenum disulfide oil (a mixture of
1/2 engine oil and 1/2 molybdenum disulfide
grease containing more than 3% molybdenum
disulfide additive) to the outer surface of each
valve lifter (6).
4. Install the valve lifters in their original location
into the camshaft holder assembly.
5. Apply oil to new O-ring (7) and install it.
(3)
(7)
(6) valve lifters
6. Apply molybdenum disulfide oil (a mixture of
1/2 engine oil and 1/2 molybdenum disulfide
grease containing more than 3% molybdenum
disulfide additive) to the surface of the cam
lobes.
Install the camshaft holder assembly onto the
cylinder head aligning the index line (8) on the
camshaft flange with the index mark (9) on the
camshaft holder as illustrated above. Apply oil
to the camshaft holder assembly bolt threads
and seating surface.
Align the camshaft holder assembly bolt holes
(10) with the rocker arm shaft cut-outs (11).
Tighten the camshaft holder assembly bolts
(12) in a crisscross pattern in two or three steps
to the specified torque:
10 lbf·ft (13 N·m, 1.3 kgf·m)
NOTICE
Do not let the bolts and valve lifters fall into the
crankcase.
(6)
(8) index line
(9) index mark
(12) camshaft holder assembly bolts
(7) O-ring
(10) camshaft holder assembly bolts holes
(11) rocker arm shaft cut-outs
(12)
(8)
(9)
(10)
(11)