Vernatherm for 1975 115HP

[rude70]

I am doing up a Evinrude 115HP 1975. Someone has removered the vernatherm so i have to get the unit, spring and valve. BRP lists 034719 which Siera has 18-3560 at 105 degrees. GLM lists BRP part 0394411 their part 13190 suitable for 1971-1990 at 143 degrees. Which one shoul I use?
Thanks
Richard

 

[F_R]

Re: Vernatherm for 1975 115HP

My service manual research says that BRP 384719 opens at 145 degrees. I don't know who told Sierra it is 105.