Yamaha 2005 MT-01, Service Manual

Page: 221 / 435

CAMSHAFTS
5-22
3. Remove:
• Camshaft drive gear “1”
• Camshaft driven gear “2”
• Straight keys
• Front cylinder camshaft end cover
NOTE:
Cover the crankcase hole with a clean rag “3” to
prevent the straight keys from falling into the
crankcase.
4. Remove:
• Oil delivery pipe “1”
• Camshaft cover “2”
(along with the camshafts)
NOTE:
Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
EAS23860
CHECKING THE CAMSHAFTS
1. Check:
• Cam
Blue discoloration/pitting/scratches
→
Re-
place the camshaft.
2. Measure:
• Cam dimensions “a” and “b”
Out of specification
→
Replace the camshaft.
Camshaft lobe dimensions
Intake A
38.241–38.341 mm (1.5055–
1.5095 in) (cylinder #1)
38.243–38.343 mm (1.5056–
1.5096 in) (cylinder #2)
Limit
38.141 mm (1.5016 in) (cylinder
#1)
38.143 mm (1.5017 in) (cylinder
#2)
Intake B
31.950–32.050 mm (1.2579–
1.2618 in)
Limit
31.850 mm (1.2539 in)
Exhaust A
38.236–38.336 mm (1.5054–
1.5093 in)
Limit
38.136 mm (1.5014 in)
Exhaust B
31.950–32.050 mm (1.2579–
1.2618 in)
Limit
31.850 mm (1.2539 in)