I am glad to see what others do. I do my own work, but I haven't had to rebuild completely, the engine - yet. My 100 has an engine that had burned oil for years, is getting worse, and has a blown head gasket for the last year. But I am not looking forward to working on the 10 HP engine.
I did install new rings in my 124, which I ran low on oil running it for 8 hrs straight while moving dirt last summer. I opened up the engine, the bearing was perfect, the bore just needed honing and new rings. Did that stuff myself. Apparently the engine was just refreshed just before I bought the 124 for parts. It ran so well I refurbished the tractor. Needed a spare tractor anyway.
I'll probably take my 100 to a shop to get it measured, bored, crank cut, and accept whatever the shop will do to reassemble (they say they won't, so I expect I will reassemble). I rebuilt V8 engine many times over the years, but I will take my time on this rebuild. BTW, I got a 12 HP engine for a temporary replacement for my 100 from an OCC member last weekend. It is a replacement 12 HP with (probably) low hours.
Otherwise, I do all the repairs on my cubs. I used to work on big tractors and trucks over the years, and now I find that cubs and regular cars are enough fun.
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John
Proud Owner of a Model 100 and a Model 124.
A homemade cart, 2 x 42" mower decks, a 38" deck,
a 42" front NF blade, and a lawn sweeper!
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