i have my grandfathers old 1074 pioneer and want to run it only problem not sure what mix ratio. i have run my old macs only 50:1 . i do not want to ruin this old classic. i have run this for a few minutes on 50:1 to make sure it would still run after being in storage for a year. this old old girl runs like a scalded cat plenty of power carb nedds tweaked bu that may be fuel mix.any one have a link to a owners manual or a copy. thanks fellow loggers. any other info would be a help. opcorn: