Yamaha RX10K Supplementary Service Manual page 276

CAMSHAFTS
REMOVAL
1. Remove:
S Timing plug
2. Align:
S "I" mark a on the A.C. magneto rotor
(with the stationary pointer b on the A.C.
magneto cover)
NOTE:
S Turn the crankshaft clockwise.
S When piston #4 is at TDC on the compression
stroke, align the "I" mark a with the stationary
pointer b on the A.C. magneto rotor.
S TDC on the compression stroke can be found
when the camshaft lobes are turned away
from each other.
3. Loosen:
S Camshaft sprocket bolts 1
4. Loosen:
S Timing chain tensioner cap bolt 1
5. Remove:
S Timing chain tensioner 2
S Gasket
6. Remove:
S Camshaft sprockets 1
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire 2 .
5-9
ENG