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

I am new to this forum.  I recently rescued a Simplicity 1691900 from a community dumpster.  I spoke to the person who put it in there.  She could not get it started, so I asked if I could have it to try to fix.  The snow blower is in good shape appearance wise and the engine is a Tecumseh 8 HP Snow King.  I took it home, made a couple of pulls and it didn't want to start.  I got out the trusty starting fluid and it started right up.  The only problem was no matter what gear the selector was in it ran in reverse.  I made the factory adjustments and it quit moving altogether.  I went over it, changed the oil and drained the gas.  I turned it up on end and opened the bottom pan.  The pin that fits in the speed selector had sheered off and the collar to hold it to the friction wheel had worn severely.  I got the Simplicity owner's manual and parts manual.  It looks as if less than 50 dollars will have me in business for next year.  My question is the Simplicity manual refers to the engine owner's manual.  I tried to go to the Tecumseh web site, but it appears they are out of business.  I searched everywhere and am not able to find the manual.  I searched this forum an did not see a reference.  Is there anywhere I can get the Tecumseh owner's manual, or do I need to plan on buying a repair manual.  I also am curious what is so special about the Simplicity special cold weather worm gear oil for the auger worm gear?  Any help is appreciated.

Many thanks,

Tailwind