McCulloch 250 - Page 22

3. Remove the clutch from the crankshaft. On Model 250 engines,
turn the clutch rotor nut clockwise to remove it (figure 19). On
Model 300 engines, remove the clutch returning nut, turning it
counterclockwise.
4. Remove the clutch drum and sprocket assembly from the crank-
shaft (figure 20 for the Model 250, figure 21 for the Model 300).
Clean the sprocket bearing and lubricate with Shell Alvania #2 or
equivalent grease . Repeat the inspection and lubrication at fre-
quent intervals to avoid running with a dry bearing and causing
unnecessary wear (fi gure 21).
5.
After replacing the sprocket, reinstall the clutch and tighten the
clutch rotor nut (Model 250) or the clutch retaining nut (Model 300).
Be sure to remove the locking pin from the flywheel before you pull
the starter handle.
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