Johnson TD-20 5hp Outboard Ignition Coil Timing Throttle Plate 580084 1946-1949 Carburetor 386597 585061 586278 YA27 YA63

386597 585061 586278 YA27 YA63 MOT2005 RS41050

MerCruiser 861554T01 Power Steering Cooler Replaces 861554T

Rochester 17080561

1970 1971 1972 1973 1974 1975 1976 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990

(especially with inboards) so contact us or check with your parts diagram if you are unsure on fitment

Johnson TD-20 5hp Outboard Ignition Coil Timing Throttle Plate 580084 1946-1949 Carburetor 386597 585061 586278 YA27 YA63Part Number(s) Included 71 300,510 300510 Ignition Coil Plate 580084 Ignition Coil The Primary windings read roughly 0 to 0. 5omh (I am going to assume a dirty connection, if it was truly bad it would be no continuity) and the Secondary windings read 3500K on the cleaner looking coil and 6500k on the dirtier looking coil which fall within those 3000K to 8000K specifications. Although running experience may be different, but as far as the bench test is