Manuals for Walter Minor engines
Walter Minor 4-III technical description and operator's manual
Walter Minor 4-III illustrated parts catalogue
Walter Minor 6-III technical description and operator's manual
Walter Minor 6-III illustrated parts catalogue
Service bulletins and service letters
For LOM Praha M137/M337/M332 engines
WMS-SL/M-2018-01: Stanovení provozních lhůt pro STC 10067113 a 10033420
WMS-SL/M-2018-01/A01: Provádění Revize F
For Walter Minor engines
M4-III-11 M6-III-7 Shielding caps in Scintilla magnetos
M4-III-12 Cylinder head mounting
M4-III-13 M6-III-8 M332-24 M337-12 Radio interference and bonding
M4-III-16 M6-III-10 Oil screen check
M4-III-17 M6-III-11 M332-27 M337-15 Starter damage by improper use
M4-III-19 M6-III-16 M332-39 M337-28 Operator manual supplement
M4-III-20 M6-III-17 Cylinder head faults
M4-III-21 M6-III-18 M208B-23 M332-42 M337-31 Magneto shorting jumper
M4-III-22 M6-III-19 M332-40 M337-29 Cylinder head retorquing
M4-III-23 M6-III-21 Exchange of cylinder heads
M4-III-25 M6-III-23 Faults in user-replaced cylinder heads
M4-III-26 M6-III-24 M332-50 M337-41 Scintilla MU002 starter motor repair
M4-III-27 M6-III-25 M332-51 M337-44 Cylinder dimensions at overhaul
M4-III-28 M6-III-28 M332-54 M337-49 Lubricating oils
M4-III-29 M6-III-27 M332-55 M337-50 Removal and installation of piston pin circlips
M4-III-3 Oil scavenging modification
M4-III-33 M6-III-38 Bearing ball axial play
M4-III-35a M6-III-44a Checking of engine interior for corrosion and TBO change
M4-III-36b M6-III-45b Scintilla generator replacement with LUN2111+LUN2141
M4-III-38b M6-III-47b Replacement of L22.90 spark plugs with L22.62a shielded plugs
M4-III-4 Maintenance scheduling
M4-III-41b M6-III-50b TBO extension
M4-III-42b M6-III-51b Cancellation of mid-TBO inspection
M4-III-43b Replacement of Scintilla magnetos with LUN2225
M4-III-44b M6-III-52b Use of P2131 electric starter
M4-III-5 No lubrication needed for magnetos
M4-III-7 M6-III-5 Pressures and temperatures
M4-III-8 Recall of connecting rods
M4-III-9 Supplement to M4-III-3
M6-III-15 Valve clearance change
M6-III-2 Recall of connecting rods
M6-III-20 Operator manual errata
M6-III-29 Oil leaks in P320 electric starter on M6-III
M6-III-3 Operator manual update
M6-III-30 Oil leaks between cylinders and crankcases
M6-III-35 Crankcase front plate tightening
M6-III-36 TBO extension to 900 h
M6-III-37 W45AK6Z carburetor fuel supply valve
M6-III-4 Fuel pressure upstream of the carburetor
M6-III-40 Scintilla magneto replacement with LUN2221.13
M6-III-41 M137A-6 M137AZ-1 M337-71 M337A-1 Capacitor replacement in LUN2221.13
M6-III-42 M137A-9 M137AZ-3 M337-72 M337A-3 LUN2221.13 magneto improvement
M6-III-43 M137A-9 M137AZ-4 M337-74 M337A-3 LUN2221.13 rework