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Use clutch screws to secure
puller (1) 4112 890 4502 to
flywheel. Tighten down center
screw to remove the flywheel.
– Take the Woodruff key out of the
crankshaft.
– Remove the fuel tank - see 9.8.1.
– Remove the piston - see 5.6.1.
Remove screws (arrows) from
crankcase and separate the two
halves. Remove gasket from
between two parts of crankcase.
Series 4141 Powerhead
1
2
The crankshaft (1), connecting
rod (2) and needle bearing are an
inseparable assembly. It must
always be replaced as complete
unit.
– When fitting a replacement
crankshaft, always install new
ball bearings and oil seals - see
5.4.
5.8.2
Replacing the Main
Bearings
1
Replacing main bearing at
flywheel side
Carefully pry the oil seal (1) out of
the crankcase.
Use circlip pliers to remove circlip
from crankcase.
1
Use press arbor (2)
4116 893 7205 to remove the ball
bearing (1).
– Install circlip in groove.
1
2
21
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