it needs to b e checked by a garage
It is cold so I suggest that you were a pants and a sweater and something warm
73 [lots] of 6+0 make 4380.
75ps or about 73 HP
very carefully
Orange....
40
73-74 Chevy van.
a CB engine is from a 72-73 VW Bus.
"per cent" is latin for "divided by hundred". 73 percent = 73/100 = 0.73
73% is a percent so you don't need to change it.
Cold and hot are relative terms. You need to state a base reference for comparison.
Major tune up time. Replace plugs and filters and do a valve job. Make sure the carbs are synched. If this fails to improve things, get your carbs worked on.