clutch YAMAHA TTR50 2006 Owner's Manual

4 - 46
ENGAC MAGNETO AND STARTER CLUTCH
3. Install:Spring 1
 Spring cap 2
 Pin 3
4. Install: Shim 1
 Starter wheel gear 2
 Starter idle gear 3
 Shaft 4
NOTE:
Apply the molybdenum disulfide oil on the
starter wheel gear inner circumference.
 Apply the engine oil on the starter idle gear
inner circumference and on the shaft outer
circumference.
1 2
3
12
3
5. Install:
Woodruff key 1
 Rotor 2
NOTE:
Clean the tapered portion of the crankshaft
and the rotor hub.
 When installing the rotor, make sure the
woodruff key is properly seated in the key
way of the crankshaft.
6. Tighten: Rotor nut 1
NOTE:
Tighten the rotor nut 1 while holding the
rotor 2 with a sheave holder 3.
 Do not allow the sheave holder to touch the
projection on the rotor.
7. Install: Crankcase cover (left)
NOTE:
 Pass the starter motor lead 1 and neutral
switch lead 2 into the crankcase cover
groove as shown.
 Fasten the starter motor lead with the clamp 3.
Sheave holder:
YS-01880-A/90890-01701
T R..48 Nm (4.8 m · kg, 35 ft · lb)
3
1
2

4 - 51
ENGCRANKCASE AND CRANKSHAFT
CRANKCASE AND CRANKSHAFT
E
T R..10 Nm (1.0 m • kg, 7.2 ft • Ib)
T R..10 Nm (1.0 m •
kg, 7.2 ft • Ib)
LT
4
4 3
4
4
5 6
7
9
8
8
12
5 6
4
Extent of removal Order Part name Q ’ty Remarks
CRANKCASE SEPARATION
AND CRANKSHAFT REMOVAL
Preparation for removal Seat assembly and fuel tank
Exhaust pipe
Air filter case and bottom cover Refer to “FRONT FENDER, SEAT
ASSEMBLY AND FUEL TANK ” section.
Carburetor Refer to “CARBURETOR ” section.
Drain the engine oil. Refer to “ENGINE OIL REPLACEMENT ”
section in the CHAPTER 3.
Drive sprocket Refer to “ENGINE REMOVAL ”.
Cylinder head Refer to “CYLINDER HEAD ” section.
Cylinder and piston Refer to “CYLINDER AND PISTON ” sec-
tion.
Primary driven gear Refer to “CLUTCH ” section.

4 - 52
ENGCRANKCASE AND CRANKSHAFT
E
T R..10 Nm (1.0 m • kg, 7.2 ft • Ib)
T R..10 Nm (1.0 m •
kg, 7.2 ft • Ib)
LT
4
4 3
4
4
5 6
7
9
8
8
12
5 6
4
Extent of removal: 1 Timing chain removal
2 Crankcase separation
3 Crankshaft removal
Extent of removal Order Part name Q ’ty Remarks
Oil pump drive gear, oil pump and
oil strainer Refer to
“OIL PUMP ” section.
Shift shaft Refer to “SHIFT SHAFT ” section.
Rotor and starter clutch Refer to “AC MAGNETO AND
STARTER CLUTCH ” section.
1 Timing chain 1
2 Timing chain guide (intake) 1
3 Neutral switch 1
4 Bolt [40 mm (1.6 in)] 7
5 Bolt [60 mm (2.4 in)] 2
6 Bolt [75 mm (3.0 in)] 1
7 Left crankcase 1
8 Dowel pin 2
9 Crankshaft 1
2
1
3