McCulloch 250 - Page 25

5. Remove the flywheel with the puller. Apply pressure on the
wrench gradually. When the flywheel comes free from the crank-
shaft, lift it off the shaft.
6. Remove the key (the flat-topped piece of metal projecting from
the shaft). If necessary, place a screwdriver under the curved part
and tap it gently with a hammer to loosen it.
mI 7. Remove the retaining spring attaching screw (figure 27), the
retaining spring, the breaker box cover ancl cover gasket.
8. Clean the breaker points (figure 28) with fine cnwl'Y cloth or a
point dresser, and remove any pitted areas.
9. Turn the crankshaft until the breaker points are at tlldr widest
gap or distance apart. Measure the gap with a fe eler gauge.
The gap should be 0.020 inch. Adjust the gap by l()()sening the
mounting screw and moving the mounting plate. Rcti/!:hten the
screw and recheck the gap.
NOTE
Do not force the cam arm away from the crank~haft
when you insert the feeler gauge or your measur e-
ment will not be correct.
10. Replace the breaker box gasket and cover on the box. Install
the retaining spring and the retaining spring attachin g screw.
m
11. Replace the key in the crankshaft. Tap it into place with a
hammer.
12. Mount the flywheel on the crankshaft. Make sure the washer
goes under the nut and tighten the nut securely.
13. When replacing the fan housing on the engine, pull the starter
handle slowly so that the starter can engage the crankshaft.
Tighten the four fan housing screws securely.
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