Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Snowman: >>>The comparable Ariens models (XS Deluxe and Pro) use a similar sized alloy steel gear, similar 4 lead worm, ...... When were Toro and Ariens 4 “lead” shapes introduced? I can't remember seeing a worm shape other than round. Up to about 2004 MTD’s are round. When did MTD go to two lead? ...... >>>The Ariens also uses an asynchronous "hunting tooth" design which causes the teeth to break-in over time to mate perfectly for longer life, and, in this particular case, boosts the ratio for increased capacity (39T w/4 leads versus 40T w/4 leads). This feature also further reduces tooth stress, reduces operating oil temperature, and lessens the burden on the oil's EP additives. ...... Never heard of the hunting part either so had to google around for info. Interesting. Why dosen't Ariens advertise these things? .....Thanks Snowman.