Table of Contents WM 90 Repair
wc_br0160157en_002TOC.fm 6
6. Dissassembly/Reassembly General Information 40
6.1 Tools ....................................................................................................40
6.2 Ordering Parts .....................................................................................40
6.3 Reference Numbers ( ) ........................................................................40
6.4 Weight Block .......................................................................................40
7. Disassembly Procedures 41
7.1 Removing Engine from Rammer .........................................................41
7.2 Draining Oil ..........................................................................................43
7.3 Removing Recoil Starter and Blower Housing ....................................44
7.4 Removing Muffler ................................................................................45
7.5 Removing Governor Lever, Carburetor, Speed Control Lever ............46
7.6 Removing Ignition Coil, Flywheel, and Spark Plug ..............................47
7.7 Removing Rocker Cover and Cylinder Head ......................................48
7.8 Removing Bearing Cover ....................................................................49
7.9 Removing Camshaft and Tappets .......................................................50
7.10 Removing Connecting Rod and Piston ...............................................51
7.11 Removing Crankshaft ..........................................................................52
7.12 Removing Intake and Exhaust Valves .................................................53
8. Reassembly Procedures 54
8.1 Notes on Reassembly .........................................................................54
8.2 Crankshaft ...........................................................................................54
8.3 Reassembling Piston ...........................................................................55
8.4 Reassembling Piston and Connecting Rod .........................................56
8.5 Installing Piston ...................................................................................57
8.6 Installing Tappets and Camshaft .........................................................58
8.7 Adjusting Crankshaft End Play ............................................................59
8.8 Installing Main Bearing Cover .............................................................60
8.9 Cylinder Head ......................................................................................61
8.10 Reassembling Rocker Arms and Push Rods ......................................62
8.11 Adjusting Valve Clearances ................................................................63
8.12 Installing Rocker Cover and Spark Plug ..............................................64
8.13 Installing Flywheel Magneto ................................................................65
8.14 Installing Ignition Coil ..........................................................................65
8.15 Installing Governor, Speed Control System, and Carburetor ..............66