Table of Contents WM 130/170/270 Repair
wc_br0159563enTOC.fm 2
7. Teardown/Rebuild Procedures 38
7.1 Tools ....................................................................................................38
7.2 Ordering Parts .....................................................................................38
7.3 Reference Numbers ( ) ........................................................................38
7.4 Weight Block .......................................................................................38
8. Disassembly Procedures 39
8.1 Draining Oil ..........................................................................................39
8.2 Removing Air Cleaner .........................................................................40
8.3 Removing Stop Switch, Recoil Starter, and Blower Housing ..............41
8.4 Removing Fuel Tank, Muffler, and Muffler Cover ................................42
8.5 Removing Governor, Carburetor, and Speed Control Lever ...............43
8.6 Removing Ignition Coil, Starter Pulley, and Flywheel ..........................44
8.7 Removing Case Baffle, Charge Coil, and Spark Plug .........................45
8.8 Removing Rocker Cover and Rocker Arm ..........................................46
8.9 Removing Main Bearing Cover ...........................................................47
8.10 Removing Tensioner and Camshaft ....................................................48
8.11 Removing Cylinder Head and Valves ..................................................49
8.12 Removing Connecting Rod and Piston ...............................................50
8.13 Removing Crankshaft and Oil Sensor .................................................51
9. Reassembly Procedures 52
9.1 Notes on Reassembly .........................................................................52
9.2 Oil Sensor ............................................................................................52
9.3 Crankshaft ...........................................................................................53
9.4 Piston and Piston Rings ......................................................................54
9.5 Piston and Connecting Rod .................................................................55
9.6 Connecting Rod ...................................................................................56
9.7 Intake and Exhaust Valves ..................................................................57
9.8 Chain Guide ........................................................................................58
9.9 Cylinder Head ......................................................................................59
9.10 Setting the Timing Chain .....................................................................60
9.11 Mounting the Camshaft on the Cylinder Head ....................................61
9.12 Balancer Shaft Option (WM 270 only) .................................................62
9.13 Main Bearing Cover .............................................................................62
9.14 Mounting Rocker Arms ........................................................................63
9.15 Valve Clearance Adjustment ...............................................................64
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