Had a 50 HP Honda 4 stroke which started making oil after about 60 hours of being new. Honda tech said it was the thermostat causing the engine to run too cool and allowing gas to get by the rings on combustion. he said sometimes stats are bad when new. Changed stat and never made oil again. Makes sence!!!!

Stats are easy to change on the BF225, they have 2 and be sure to get a new oring seal.
I now have 2 BF225's but have not had a problem with them.