On Wed, 23 Dec 2009 18:21:29 GMT, stayin@home. (Way Back Jack) wrote:

Assume 342 cc engine with 5 qt. fuel capacity. How many minutes
running time to exhaust the fuel?

Same question with 420 cc engine, 5 qt. capacity. Thanks, Jack

Depends on how hard the engine is running, and whether it is an older
L-head design or an OHV engine.
The 420, all else being equal (which is very seldom the case) should
burn about 23% more fuel and blow 23% more snow than the 342.
If the 420 is not blowing any more snow than the 342, and the 342 is
running at capacity, it COULD burn less fuel.because it would not be
working as hard