If they changed lawnboy to 50-1 its the same reason all manufacturers
are trying it, to reduce pollution to apease the EPA to forestall
banning of 2 strokes. This was undertaken in Ca becuse of their strict
Mine is 32-1 , there has been no new engine design adopted to warrant a
change, its pollution based-biased.
Evinrude years ago went to a leaner mix recommendation, then withdrew
it after commercial failures by the Coast Guard. So use a leaner mix,
and lean out engine life, didn`t you know there is no crankcase full of
oil in a 2 stroke. High heat, high RPM and you stretch the saftey limit
with less oil.
You have a motor that could last 1-2000hrs, what do they care if they
reduce it to 500. The average mower may only put on 250-500 in 10 yrs
anyway. Then they figure you buy another one, and they made the EPA
happy the 2 stroke can pollute less. 32-1 synthetic is best for long
life in a lawnboy.
If you foul up, tune it and use a hotter plug. Lawnbows are knows for
ignitions getting weak after 5 yrs, you need a new coil-ignition pack if
thats the case, a weak spark does cause fouling.