About This File
Illustration from PSB #134A
Tractor Switch Ignition Magneto ignition with electric start or starter/generator 4987
(Threads 5/8"-32) 3-terminal 3-position used 1964-1967
4987 3-terminal 3-position replaced by 7572 replaced by 101482
Originally used 4989 2-prong forked key
See PSB #69
82-12o502* - Correct
82 -12o502 - Not correct
82-12o502 - Suspicious and not checked or determined yet
4987 Magneto ignition HD switch used on
1964 models 34E*, 34 R, 6 04, 654*, 7 04
1965 models 6 05, 655*, L -105, L-155*, RE-65*, RR -65
1966 models 6 06, 656*, L -106, L-156*, RE-66*, RR -66
1967 models 6 07, 657*, L -107, L-157*, RE-67*, RR -67
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Tractor Switch Ignition Magneto ignition with electric starter or starter/generator 7572
(Threads 9/16"-24) 3-terminal 3-position B-M-S used 1968-1970
7572 3-terminal 3-position B-M-S replaced by 101482
82-12o502* - Correct
82 -12o502 - Not correct
82-12o502 - Suspicious and not checked or determined yet
7572 Magneto ignition HD switch used on
1968 models 1 -1631 RS H6hp, 1-2631* for ES H6hp, 1-4631* HH6hp, 1-6231 Late*, 1-6931*, 1-7231 Late*, 1-7235*, 1-7931 Early*, 1-7932 Late*, 2-1231*, 2 -2231
1969 models 1 -3741 RS H7hp, 1-3745* for ES H7hp, 1-4741* V7hp, 1-7741* V7hp, 1 -8741 V7hp, 1-8745* V7hp
1970 models 1-4751* V7hp, 1-4752* V7hp, 1-7751* V7hp, 1-8752 V8hp, 1-8756 V8hp - (Suspect 1-8751 V7hp, 1-8755 V8hp are 1970 models)
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Tractor Switch Ignition Magneto ignition with electric start or starter/generator 101482 - HD switch so no starter solenoid
(Threads 9/16"-24) 3-terminal 3-position used 1969-1975
Replaces 4987 and 7572 3-terminal 3-position (PSB #134?)
82-12o502* - Correct
82 -12o502 - Not correct
82-12o502 - Suspicious and not checked or determined yet
101482 Magneto ignition HD switch used on
1969 models 2-1641, 2-2641 - Suspect 2-1641 and 2-2641 are 1969 models - 3rd digit 4+5=9=1969
1970 models 1-8751, 2-1651, 2-2651 - Suspect 2-1651 and 2-2651 are 1970 models - 3rd digit 5+5=10=1970
1971 models 1 -0100-6 for RS HH8hp, 1 -0270-6 V7hp for RS, 1-0275-6* for ES V7hp, 2 -0100 V7hp for RS, 2-0110 for ES V7hp, 2 -0200-6 for RS V7hp, 2-0210-6* for ES V7hp - *(Suspect 2-0101 and 2-0111 are 1972 models. Changed to 2-0100 and 2-0110)
1972 models 1 -0270-7 for RS V7hp, 1-0275-7* for ES V7hp, 2-0101 for RS V7hp, 2-0111 for ES V7hp, 2-0211 for ES* V8hp
1973 models 1-0276* for ES V8hp, 1-0277* for ES V8hp, 2-0102 for ES V7hp, 2-0112 for RS V7hp, 2-0220 for RS V7hp, 2-0230 for ES V7hp (Odd that 2-0100, 2-0101 and 2-0102 are not all RS as 2-0110, 2-0111 and 2-0112 for ES)
1974 models 2 -4300, 3-0113*
1975 model 3-0114*
