Checked the Operator"s Manual on page 65 under the FUSE
"The fuse is located on lead wire which connects ignition-light switch to ammeter and can be found attached behind a metal clip located at rear of battery on back of instrument panel. If ignition or lights fail, check this fuse. If fuses continue to burn out, check wiring for short circuits.
It is important to use a 20 ampere fuse. A smaller or larger capacity fuse will not do."
Check to make sure you've got spark from both the spark plugs.
Operator's manual suggests .025-inch gap for the spark plugs.
Operator's manual suggests .022-inch gap for the points.
Hope this helps.