TM 5-4240-501-14P IGNITION General TABLE NO.  1 SPECIFICATIONS FOR ALL POPULAR ENGINE MODELS 1.  Spark plug gap: .030" (0.75 mm) 2.  Condenser capacity: .18 to .24 M.F.D. 3.  Contact point gap: .020" (0.50 mm) ARMATURE FLYWHEEL TWO LEG THREE LEG NUT AIR GAP AIR GAP TORQUE FLYWHEEL Kilo- Milli- Milli- PULLER Foot gram Newton BASIC MODEL SERIES Inches Meter Inches Meter PART NO Poundst metert metert ALUMINUM CYLINDER 6B,60000, 8B .006 0.15 012 0.30 19069 55⁺ 7.6+ 74.6⁺ .010 0.25 016 0.41 80000, 82000, 92000, 93000, 94000 .006 0.15 012 0.30 19069 76 74.6t 95000, 110000 .010 0.25 016 0.41 100000, 130000 .010 0.25 01 0.30 None 60+ 8.3+ 81.4⁺ .014 0.36 016 0.41 .010 0.25 016 0.41 19165 140000, 170000, 190000, 220000, 250000 .010 036 019 048 or 19203: 65 + 9.0t 88.1⁺ .014 0.36 019 0.48 or 19203* CAST IRON CYLINDER 5, 6, N, 8 012 0.30 None 55+ 7.6+ 74.6⁺ 016 0.41 9 19068 or 19203 60 8.3 81.4 14 19068 65 9.0 88.1 or 19203 19, 190000, 200000 .010 0.25 022 0.56 19068 .014 0.36 026 066 or 19203 115+ 15.9+ 155.9+ 23, 230000 .010 0.25 022 0.56 19068 115 .014 0.36 026 0.66 or 19203 240000, 300000, 320000 .010 036 19 145+ 20.0+ 196.6+ .014 0.36 or 19203 ’*Use on Model 250000 built after 1975. *For rewind starter engines.  use 19161 clutch  wench. IGNITION MAGNETRON" The  flywheel  is  located  on  the  crankshaft  with  a  special metal key.  It is held in place by a Belleville washer and nut or starter clutch.  The flywheel key  must  be  in  good condition  to  assure  proper  location  of  the  flywheel  for ignition   timing.      DO   NOT   use   a   steel   key   under   any circumstances.  Use only the soft metal key, as originally supplied. The  keyway  in  both  flywheel  and  crankshaft  should  not be  distorted.    Flywheels  used  are  made  of  aluminum, zinc or cast iron. Fig. 3 - MAGNETRONT" Ignition 2 2