Ignition Assembly; Clutch Assembly - Husqvarna CR 50 / 2011 Workshop Manual

Ed. 01-09-2010
ENGINE

Ignition assembly

- Insert key inside crankshaft groove.
- Fit rotor (2) with washer, counteract with the special tool, secure nut in
place with Loctite 243, and tighten to 20 Nm / 2.0 Kgm / 14.75 ft/lb.
Special tool pins shall not engage inside rotor threaded holes, as they
would cause damage to threads.
- Slide chain sprocket (3) with collar pointing back onto output shaft, and fit
circlip.
- Fit stator (4) inside crankcase.
To make assembling operations easier, you can slightly compress
stator with your fingers. Before screwing it, check for its correct seat.
Stator shall neither tilt nor get stuck.
- Lock stator hexagon socket head cap screws M5x25 (5) with Loctite 243,
and tighten them to a torque of 8 Nm / 0.8 Kgm / 5.9 ft/lb.
- Position cable guide (6).

Clutch assembly

- Insert shim(s) (25x15) onto crankshaft, fit needle roller bearing, and centrifugal
clutch drum.
- Fit centrifugal clutch.
- Using a suitable screwdriver (7), lock centrifugal clutch, drum and primary
drive sprocket.
- Lock crankshaft nut M10x1.25 with Loctite 243, and tighten to a torque of
35 Nm / 3.5 Kgm / 25.81 ft/lb.
- Tighten output shaft nut to a torque of 40 Nm / 4.0 Kgm / 29.50 ft/lb.
- Bend output shaft nut lock washer.
To ensure centrifugal clutch correct operation, there shall be an axial
clearance S of 0.2 - 0.7 mm (0.01 - 0.03 in) between drum and clutch
unit.
- Using a slider gauge (8), measure drum axial clearance:
press drum towards primary drive sprocket, and measure the distance
between drum upper edge and primary drive sprocket.
Then remove drum from primary drive sprocket, and repeat measurement; the
difference between the two readings corresponds to drum axial clearance.
- Using a feeler gauge (9), measure the distance between drum and primary
drive sprocket: it should be at least 0.5 mm (0.02 in).
If the axial clearance or the distance are not within tolerance, compen-
sate with shims. Shims are available with different thicknesses.
F.19