Honda CRF450R Owner's Manual page 38

4. SERVICE AND MAINTENANCE
Clean and apply a locking agent to the cam sprocket
bolt threads (coating width: 0.26 in (6.5 mm) from tip).
Position the cam sprocket onto the shoulder of the cam-
shaft and install a cam sprocket bolt.
Rotate the primary drive gear lock bolt (crankshaft)
clockwise one turn and install the other sprocket bolt.
CAUTION:
• Do not let the bolts and sprocket fall into the crank-
case.
(1) CAM SPROCKET BOLTS
(2) CAM SPROCKET
36
Remove the stopper tool from the cam chain tensioner
lifter.
(1) STOPPER TOOL
Rotate the primary drive gear lock bolt (crankshaft)
clockwise two turns and align the "T" mark with the
index mark. Make sure that the timing marks on the
sprocket align with the mark on the camshaft holder
assembly.
If the timing mark doesn't align with the
move the cam sprocket.
Then realign the valve timimg.
2
1
(1) "T" MARK (2) INDEX MARK
(3) TIMING MARK (4)
Tighten the cam sprocket bolt, then tighten the other
sprocket bolt.
TORQUE: 14 lbf ft (20 N m, 2.0 kgf m)
1
(1) CAM SPROCKET BOLTS
Rotate the primary driver gear lock bolt (crankshaft)
clockwise and align the "T" mark with the index mark.
If the exhaust rocker arm is not free, rotate the primary
drive gear lock bolt (crankshaft) clockwise one turn and
realign the "T" mark to the index mark.
mark, re-
1
(1) "T" MARK
(2) INDEX MARK
(3) EXHAUST ROCKER ARM
MARK
2