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Yep,Soak the cylinders with PB-Blaster/WD-40/Liquid Wrench. I use all three together. It is what I have used in the past to get things unstuck. That is as long as there is not a heavy rust build-up present. If that is the case, you will have to pull the blocks off the tractor and clean up the rust above and below the pistons. You cannot drive the pistons over rust buildup very easily. You'll break things for sure. After I take the blocks off the tractor. I'll set them over a couple of 5 gallon buckets and spray in the mixture of penetrating fluids. Take a dental pick and scrape along the edge of the piston and cylinder wall at the top of each piston to scrape away any rust build-up so the penetrating fluids can soak down the sides of the pistons. Before you put the blocks over the buckets You can spay the oil control ring down from the backside and sometime, the penetrating oil will work its way through the holes in the oil control ring and help loosen up the pistons. This is a slow process. It will not happen overnight. Wrap on the top of each piston with a hammer and block of wood. At some point, you will hopefully, see the penetrating fluid level in the cylinders decrease. This means that its soaking down around the piston. It is usually easier to drive the piston out the shortest distance. Not in all cases, but in most. As for parts. They are available. I am rebuilding a JetStar 3 and I can tell you to do a complete overhaul (bearings, rings, gaskets) will cost you around $500.00 - $600.00. This will get you all the gaskets, new rings, new mains and rod bearings and a valve job. (not new valves - but regrind yours). If you have to replace pistons, because you have to bore your blocks. Add another $400 to the sticker price. Add another $200 if you replace all of your valves with new ones. I am doing a complete major overhaul of the JetStar 3 I have. I is a basket case and needs it all. New pistons, rebored cylinders to .040 oversize, all new gaskets, new mains and rod bearings at .010 undersize. Crank reground. By the time I am done, I will have $1,300 in the engine to make it like new. If half of it was'nt junk, I could have done the job for $500. I get my parts from Welters. There is a listing for them on the parts section of the minneapolis-moline website. www.minneapolis-moline.com If you have any questions, hollar here or on that website. There is a wealth of knowledge on these two pages from people who post here. They have helped me in the past. Phil
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