did you ever figure out your problem i have the same motor and mine starts up fine and will go slow but dies as soon as i throttle up i changed the fuel pump and still the same thing come to find out the fuel pump i put on was for a smaller hp motor but ive read on these sites that it should be fine.......just need a little help thanksI have a 1976 70 hp Evinrude that starts well and runs well at low speed. When I try to increase the throttle, it stalls.
Thanks.
do a search on here for service bulletin 1144. Joe Reeves sent it to me and it worked perfectly. If you can't find it repost and I will try to send it to you.