Small Engines reliability and overall ownership experiences. My experience and I have probably owned 25 different machines with small engines...........(maybe more, I have over a dozen right now...)
1. Honda. No question a reliable product which has proven itself over and over.......
Tie
1. Yanmar . Since we weren't limited to just gasoline engines, my experience with Yanmar's has been extremely good, with one with 2,600 hours, one with over 650 hours and both have been great engines.
2. Kawasaki. I have run three different Kawasaki engines over 900 hours each and have had no issues. Also, it's getting harder to get a Kawasaki engine on mowers, etc. and many brands are developing their own engine as the demand for Kawasaki power plants far exceeds the supply.
3. Subaru. My Billy Goat commercial blower has a Subaru engine. My friend that owns the dealership for other than Green has sold hundreds of Subaru engines on blowers, splitters, pumps, etc. and he has never had one in for any repairs, just basic service. Subaru stopped making these engines a few years ago, which was unfortunate. In fact, my friend suggested I get some basic service parts ordered and put in the toolbox "just in case" as he is hearing the parts availabilty for these engines is going to be more challenging to get over time, largely because most dealers never stocked most parts for these as they weren't having to make repairs on them.
4. Honda clone's from Harbor Fright - My buddy with the small engine shop has re-powered numerous machines with these replacement engines and he insists that those engines which are direct Honda knock off's have been extremely reliable. However, I dislike the fact that it's really probably patent infringement and direct copying of the product of another company which spent the time and engineering to develop the product into a superior consumer engine.
5. Tecumseh - Now being sold in place of Kawasaki engines on many what I would consider "Premium" brand pieces of equipment, such as ExMark's commercial series machines. The Kawasaki engines are a $500 up-charge over the Tecumseh engines on the Laser Model mowers and it's $500 very well spent in my personal opinion.
6. Briggs. I would avoid buying one if given a choice of another engine. Some of their commercial engines are better than their "consumer engines", but I simply wouldn't invest in an expensive piece of equipment with a Briggs engine unless I had no choice, and I can't imagine that happening.