PHASEMAKER....Best way to tell?

[roonie]

Is there a way to discern a phasemaker engine from a NON phasemaker?...is there one for sure item to look for

 

[tacx]

If your coils are under the flywheel its a 69 and older "phelon magnito" also called the "lightning" ignition.

if your coils are outside the flywheel and mounted on top the power head its a 1970 and later "phase maker" also called a " Thunderbolt " ignition.

 

[roonie]

ok...what year did mercury quit making the phasemaker engine?

 

[tacx]

Sorry, don't know that

 

[racerone]

1972 might have been the last year for the phasemaker.---If there is a black rectangular box beside the sparkplugs it is NOT a phasemakerr.------Why the question ?.

 

[roonie]

my friend just bought a merc so i was telling him of my phazemaker woes with my 7.5...still cant get her to run on two cyl..lol but i did finally find the correct orange coils so just have to install them. Anyway...his is a 20hp right around that 1972-73 range with the blue stripe on the cowl hood

 

[flyingscott]

Blue stripe should not be a phasemaker.

 

[jimmbo]

According to one service manual, the Phasemaker was discontinued in 73 on the 20hp, 74 on the rest of the 2 cylinder motors except the 402, which continued until 1975. However it was used on the single cylinder until 1988.



Manual could have a Typo...

Mercury first went with Blue Striping on the cowls in 1972, and used blue through 1983