About This File
3656 3-terminal ignition switch for magneto ignition and electric start
No battery power to this switch. The switch grounds the ignition and starter circuits to control them.
Must be used with the original 3657 starter solenoid or a suitable replacement.
Originally used 3668 2-prong forked key?
The 3656 was originally a single wire switch but part number changed to 6890
Used on
1960 model 550
1961 model 551
A Napa and Prime-Line switch 7-01901 (5/8" mounting stem) can be wired to work with the original solenoid. Ground the B terminal and the body of the switch.
A Stens switch 430-144 (5/8" mounting stem) can be wired to work with the original solenoid. Ground the B terminal and the body of the switch.
A Cole Hersee switch 95510B (?" mounting stem) can be wired to work with the original solenoid. Ground the B terminal and the body of the switch.
A Rotary switch 31-7179 (5/8" mounting stem) can be wired to work with the original solenoid. Ground the B terminal and the body of the switch.
Original 3656 3-terminal 3-key position switch function
OFF - M+G
RUN - ------
START - S+G
Replacement BMS+G 3-terminal 3-key position switch function. Case ground is G
OFF - M+G
RUN - ------
START - B+S
If the B terminal was grounded making it BG
OFF - M+G
RUN - ------
START - BG+S
82-12o502* - Correct
82 -12o502 - Not correct
82-12o502 - Suspicious and not checked or determined yet
3656 3-terminal magneto ignition switch used on
1960 model 550* - Optional
1961 models 4 01, 551*, 7 01
1962 models 32 E, 32 R, 5 02, 5 52, 7 02
1963 models 33 E, 33 R
1965 models 6 05, 6 55
1966 models 6 06, 6 56
Magneto ignition with electric start 3656 with 3 terminals
(Threads 5/8"-32) 3-terminal 3-position keyed switch using 3668 2-prong key
Switch grounds the small terminal on the 3657 starter solenoid to complete the circuit.
3656 1-terminal changed to 6890 - See PSB #69 for 550 551
Used 1960 1961
