we have recently acquired a Bolens' Pony tiller with 5hp Briggs & Stratton motor. The model number on the chassis plate is 12050 but we can't seem to locate a manual or any other info regarding this machine although manuals for the 5.5 & 6hp Ponys' with model designation 122### have many similarities to ours. Can anyone assist with a manual for our 12050 (Australia)