16 ENGINE 172
16.5.26 Checking the valve clearance (125 Duke)
304431-10
– Crank the engine several times.
Castle nut wrench; ½" drive (90129021000) ( p. 257)
– Set the engine to ignition top dead center. ( p. 92)
304432-10
– Check the valve clearance at all valves between the camshaft and cam lever.
Guideline
Valve clearance, exhaust, cold 0.13… 0.17 mm (0.0051…
0.0067 in)
Valve clearance, intake, cold 0.08… 0.12 mm (0.0031…
0.0047 in)
Feeler gauge (59029041100) ( p. 253)
» If valve clearance does not meet specifications:
– Adjust the valve clearance. ( p. 172)
304734-10
– Mount and tighten screw plug 1.
Guideline
Screw plug, alternator cover M18x1.5 15 Nm
(11.1 lbf ft)
16.5.27 Adjusting the valve clearance (125 Duke)
Main work
– Remove the timing chain tensioner. ( p. 93)
– Remove the camshaft. ( p. 93)
304738-10
– Swing up cam lever 1.
– Correct the shims 2 as indicated by the results of the valve clearance check.
– Install the camshafts. ( p. 170)
– Install the timing chain tensioner. ( p. 171)
Finishing work
– Check the valve clearance. ( p. 172)
16.5.28 Installing the starter motor (125 Duke)
304434-10
– Grease the O-ring. Position the starter motor.
Long-life grease ( p. 250)
– Mount and tighten screws 1.
Guideline
Screw, starter motor M6 12 Nm (8.9 lbf ft)
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