WM 90 Theory of Operation
wc_tx000388gb.fm 33
4.8 Cross Section Across Shaft Components
See Graphic: wc_gr001884
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Ref Description Ref Description
1 Cylinder head 9 Main bearing cover
2 Piston pin 10 PTO shaft
3 Ignition coil 11 Piston ring
4 Blower housing 12 Piston
5 Recoil starter 13 Muffler
6 Flywheel 14 Exhaust valve
7 Crankcase 15 Intake valve
8 Flange adapter
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