about 33 mph
That is the main jet needle valve.
5 hp
The plug gap for a 5.5 hp Tecumseh is .030 in.
how many cc is a 13 hp
An Autolite 258 is the recommended spark plug for a 6. 5 horsepower Tecumseh engine. A Champion RJ19LM also is recommended by the manufacturer.
what is the capacity
From the Tecumseh Jiffy Drill website: Ratio for Tecumseh TVO85 (3 hp), AV520 (3 hp), AV600 (3.5 hp), TMO49 (2 hp), TC200 (1.6 hp) and TC300 (2 hp) engines is 40:1. For a 40:1 mixture: Mix 3.2 oz of 2-cycle oil to 1 gallon of gasoline.
Tecumseh website, "All spark plugs air gap is .030."
5 ft. lbs.
twenty eight ounces
Tecumseh provides dealers with a 0.012" air gap guage, but 0.010 - 0.014" will do.