Yamaha TDM850 1996 Service Manual page 66

VALVE CLEARANCE ADJUSTMENT
5. Disconnect:
S Thermo unit lead 1
S Thermo switch lead 2
S Ground lead 3
S Thermostatic valve housing 4
6. Remove:
S Spark plug caps
S Spark plugs
S Cylinder head cover
7. Remove:
S Timing plug 1
S Straight plug 2
S O-ring
8. Check:
S Valve clearance
Out of specification ! Adjust.
Valve clearance (cold):
Intake valve:
0.15 X 0.20 mm
Exhaust valve:
0.25 X 0.30 mm
Checking steps:
S Turn the crankshaft counterclockwise with a
wrench.
S Align the T.D.C. mark a on the rotor with the
align mark b on the crankcase cover when #1
piston is at T.D.C. on compression stroke.
NOTE:
TDC on compression stroke can be found when
the cam lobes are opposite each other as shown.
3-7
INSP
ADJ