Chainsaw Repair

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Stihl Series 1122 Ignition Systems V2.0 07.28.15
064 1986-1997 066 1988-2003 MS660 2004-2014 MS650 2005-2012
Earliest illustrated parts list noted where known.


Flywheels – aluminum with single keyway unless noted.
1122 400 1201A – 064 for use with Bosch ignition, unlimited coils
1122 400 1202 – 066W, MS660 unlimited, new thicker style for heated handle and carb generator, POLY
1122 400 1203 - 064, 064R for use with limited coils 1303 [92.12ipl] (gap of .2 to .3mm)
1122 400 1203 (double keyway) - 064, 064R for use with limited or unlimited coils
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1203/1204 - marked with both but only one keyway, normally limited
1122 400 1204 – 064 – limited with retarded start timing (a’ la Mastermind’s pic)
1122 400 1204 (single keyway) – 064 for use with limited coils ONLY
1122 400 1204 (double keyway) – 064
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1206 – 064 unlimited for use with Bosch ignition and generator 3500 [87.1ipl]
1122 400 1207 - 064W limited for use with 1303 and generator 4000 or 3500
1122 400 1209 – 066 for limited coils
1122 400 1209/1214 - 066 marked with both numbers but only one keyway
1122 400 1209/1214 – 066 double keyway
Keyway X or B is furthest clockwise for unlimited coils
Keyway P is furthest counterclockwise for limited coils
1122 400 1210 – 066 for limited coils with generator
1122 400 1214 - 066, 066M unlimited with larger big end bearing from early 1995 [95.01ipl] **
1122 400 1215 – 066 redeye
1122 400 1216 - 066W unlimited for generator with larger big end bearing early 1995 [95.01ipl]
1122 400 1217P – 066 unlimited Polymer pre 1996
1122 400 1217 – MS650, MS660 (same as 1217p maybe)
1122 400 1218 – 066W unlimited Polymer thin style for heated handle generator

Generators
1118 400 4000 – 064W [92.12ipl]
1122 400 3500 – 064W [87.1ipl], 066W [95.01ipl]
1122 400 3501 – 066W, MS660
1122 400 3502 – 066W, MS660 (circa 1999) two windings for carb and handle heat

Ignition Coils
0000 400 1300 – 066 Lida standard unlimited “short” mount **
0000 400 1303 – 066 2nd Lida EY-V unlimited
0000 400 1305 – 066 Lida Standard unlimited
1122 400 1300 – 064, MS640 unlimited, Bosch E1-V “dogleg” mount [87.1ipl]
1122 400 1303 – 064 Prufex CDIC limited (12,000 RPM) Prufex [92.12ipl]
1122 400 1307 – 066 CDIC-A limited (13,500 RPM) including 066 red eye model
1122 400 1311 – 064/066 original Lida EY-V unlimited, easier starting, short life span [95.01ipl], installed starting X 31 067 164 on 064 and 066
1122 400 1312 - 066 poly flywheel three screw mount
1122 400 1314 – 066, MS650, MS660 Lida standard unlimited two screw mount

Trigger Units
No number shown - 064 September 1987 to mar 3rd 1991 [92.12ipl]

Important notes:

** - these items are widely available as good quality aftermarket components

1994 –
066 after X 29 588 002 new crankshaft with better bearing and cage
064/066 after X 31 067 164 new EY-V coil and unlimited flywheel

1995 -
066 Magnum USA model only OSHA noise reduction changes from # X 31 980 509.
066 first decompression valve # X 32 231 689.
064/066 after # X 31 815 798 crankcases have 4 mounting holes for brake cover instead of 3.

1996 -
066 after # X 33 917 066 all of the following - larger big end bearing, longer crankshaft with different ignition taper and larger threads, new crankcase, lightweight poly flywheel 1122-400-1217, new unlimited coil 0000 400 1303,

1997 –
064/066 after X 33 459 523 first plastic name badge
064/066 after x 35 661 524 new style tank valve/tank housing
064/066 after X 36 262 047 new oil-less HD air filter
064/066 after X 38 139 451 another new tank vent

1998 –
066 after X 39 176 186 EPA certified, limiter caps on WJ-69 carb, new cylinder timing,
Smaller exhaust openings

2002-
MS660 introduced