As Frank noted, you’ll have to fix the cam roller as the first step to get the carb/throttle sync correct, then go from there to see what else might be causing a problem. And as Dale and crosbyman noted, the worn roller can be fixed with heat shrink tubing. On a recent project, I had a cam roller that was so badly worn it was useless. While browsing in my local hardware store, I happened to find a hard nylon spacer that was a perfect substitution for the original piece.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
