178 in stock across 17 Indiana and Ohio dealerships, from $3,495 to $730,500.
Look at separator hours, not engine hours. Under 1,500 separator hours is a low hour machine. From 1,500 to 2,500 is normal midlife with plenty of harvests left. Past 3,500 to 4,000 separator hours you should expect to invest in rotor elements, concaves, sieves, feederhouse chain, and elevator components. None of that is disqualifying if it is priced into the deal, and many high hour machines have already had that work done. Ask for records showing what has been replaced and when.
Harvest equipment is the highest stakes purchase on most Indiana and Ohio grain farms, because a combine that is down in the third week of October costs far more than the repair bill. Buying used works well here, but only if you inspect the wear parts that determine grain quality and capacity rather than trusting the hour meter.
Class ratings are a rough guide, not a promise. In typical eastern Corn Belt yields, a Class 7 machine with a 12 row corn head will cover 500 to 900 acres of corn and beans comfortably. A Class 8 with a 12 or 16 row head handles 900 to 1,800 acres, and Class 9 and up is where 2,000 acre and custom operations live. Your real limit is usually grain cart and trucking capacity, not the combine, so size the whole harvest chain together.
Count your available harvest days honestly. Indiana and Ohio give you maybe 15 to 22 fit field days in a normal October, fewer in a wet one. Divide your acres by those days and you get the acres per day you must average, then work backward to engine size and head width. Buying one class larger than you strictly need is a common and defensible choice, because it buys you dry days. Buying two classes larger usually just costs you money in fuel and depreciation.
A combine carries two meters and both matter. Engine hours include road travel, unloading, and idling. Separator hours record actual threshing time and are the honest measure of wear on rotors, concaves, sieves, and augers. A healthy ratio is roughly 1.3 to 1.5 engine hours per separator hour. A machine showing 3,000 engine hours and only 1,400 separator hours probably did a lot of road time or idling, which is easy on the threshing system but hard on nothing in particular.
For planning, 1,500 to 2,500 separator hours is a normal midlife machine and still has plenty of harvests left. Past 3,500 to 4,000 separator hours you should assume rotor, concave, and sieve refresh is coming, plus feederhouse and unloading auger attention. Those are all serviceable items, and pricing them into the deal is smarter than avoiding higher hour machines outright. Ask specifically what has already been replaced and when.
Open the machine. Pull the rotor access and look at the threshing elements and the concaves. Rounded, polished, or missing rasp bar edges mean the rotor is beating grain instead of threshing it, which shows up as cracked corn and split beans. Check concave wire spacing for stretch and the concave frames for cracks. Look at the separator grates and the discharge beater. On a machine that has been in a lot of corn, the rotor cage vanes wear thin and that costs you capacity in tough conditions.
Then work the cleaning shoe. Pull the sieves and check for warped louvers, worn pivot pins, and cracked frames, and make sure the adjustment mechanisms move freely across their range. Inspect the clean grain and tailings elevators for worn chain, stretched links, and thin paddles, because a worn clean grain elevator dumps grain back on the ground quietly. Check the unloading auger flighting for thinned edges and the auger tube for wear through at the elbow.
The feederhouse takes abuse and is expensive to fix. Check the chain for stretch and correct tension, the slats for wear and bends, the drum and front shaft bearings for play, and the floor for thin spots or patches. Look hard at the faceplate, the head coupler, and the multicoupler for damage or worn bushings. Rock damage, cracked side sheets, and a bent feederhouse are all signs a machine was run hard into ground that should have been left alone.
Heads deserve their own inspection. On corn heads, check gathering chains for stretch, deck plate adjustment and wear, stalk roll flutes for rounding, and gearbox play. Worn stalk rolls and mis-set deck plates are the number one cause of butt shelling loss. On platforms and draper heads, look at the knife and guards, the reel tine condition, the auger flighting and clearance, and on drapers the belt condition, tension, and drive rollers. TRULAND publishes separate inspection programs for combines, corn heads, and platforms, so each piece can be checked on its own.
A combine is a seasonal asset that sits eleven months a year, which is exactly why used makes sense for many operations. Depreciation on new combines is heavy in the first three years. A five to seven year old machine at a fraction of the new price, with wear parts refreshed, does the same work if it is set up correctly. The tradeoff is that when it does break, it breaks in the middle of harvest, and parts availability and service response become the whole story.
Budget beyond the purchase price. Plan on annual pre-season inspection, concave and sieve wear over time, feederhouse chain, belts, knife sections, and a real fuel line item, since a Class 8 machine can burn 12 to 18 gallons an hour in heavy corn. Keep a shelf stock of the belts and chains that shut you down. Extended protection through a PowerGard Protection Plan is worth pricing on a used machine, because a single major failure can exceed the annual premium many times over.
Yield monitoring and mapping are standard expectations now, and they are only as good as the calibration. Confirm the machine has a working mass flow sensor, moisture sensor, and header position and width settings, and that the yield monitor calibrates without fighting you. Ask whether the display, activations, and any documentation licenses transfer with the sale. Automated settings features that adjust rotor speed and fan by crop conditions can meaningfully reduce loss for operators who are not veterans at manual tuning.
Data matters after harvest too. Yield maps drive next year's fertility, seeding rate, and hybrid placement decisions, and they need to land in John Deere Operations Center cleanly to be useful. If your combine data does not sync, the maps sit on a card and never get used. TRULAND offers Total Farm Support Plans at $1,500 for spring or fall that include Operations Center review and data clean-up, data transfer to equipment, and in-field technology startup, which is worth considering ahead of a first harvest with a new to you machine.
The used combine market in the eastern Corn Belt has a clear rhythm. Trades land on dealer lots from November through February, so winter is when selection peaks and pricing is most negotiable. By August, good machines are gone and whatever is left carries a harvest premium. If you are shopping, start looking in December and plan to have a machine bought by early spring.
Buying early also gives you the one thing you cannot buy in October, which is time. A machine purchased in winter can go through a full inspection, get concaves and sieves addressed, have the head fitted and the multicoupler checked, and get the yield monitor calibrated on a test load before it matters. With 178 used harvesting units listed across the group, searching all 18 Indiana and Ohio stores rather than one lot gives you a much better shot at the right configuration.
External sources are provided for reference. For anything specific to your machine or your operation, call the store nearest you.
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Look at separator hours, not engine hours. Under 1,500 separator hours is a low hour machine. From 1,500 to 2,500 is normal midlife with plenty of harvests left. Past 3,500 to 4,000 separator hours you should expect to invest in rotor elements, concaves, sieves, feederhouse chain, and elevator components. None of that is disqualifying if it is priced into the deal, and many high hour machines have already had that work done. Ask for records showing what has been replaced and when.
Engine hours count every hour the engine runs, including road travel, unloading, and idling. Separator hours count only the time the threshing system is engaged and actually harvesting. Separator hours are the better measure of wear on the rotor, concaves, sieves, and elevators. A typical ratio is about 1.3 to 1.5 engine hours per separator hour. A much higher ratio suggests heavy road or idle time, and a ratio near 1.0 suggests a machine that worked in tight fields with little travel.
For 1,000 acres of corn and soybeans in Indiana or Ohio, a Class 8 machine with a 12 row corn head is the common fit, though a well run Class 7 can cover it in a favorable fall. The constraint is usually harvest days. If you count on roughly 18 fit days in October, 1,000 acres means averaging 55 to 60 acres a day, which a Class 7 can do but a Class 8 does with margin. Make sure your grain cart and trucking can keep up before sizing up the combine.
Open the rotor access and check rasp bar and concave wear, concave wire stretch, and separator grates. Pull the sieves and look for warped louvers and worn pivots. Inspect clean grain and tailings elevator chains and paddles, and the unloading auger flighting. In the feederhouse, check chain stretch, slat wear, drum bearing play, and the floor. On corn heads, check gathering chains, deck plates, stalk roll flutes, and gearboxes. A dealer combine inspection covers all of this systematically.
For many farms under 1,000 acres it can be, especially compared to custom harvest rates over several years. A combine sits eleven months a year, so buying used and letting the first owner absorb the steep early depreciation is a reasonable strategy. The real questions are whether you can absorb downtime during harvest, whether you have parts and service support nearby, and whether your acreage justifies ownership versus hiring it done. Run the comparison on total cost per acre over five years.
In heavy corn, a Class 8 combine commonly burns 12 to 18 gallons an hour, and larger machines more. Soybeans generally run lighter, often 8 to 13 gallons an hour, because the crop load through the separator is lower. Yield, ground speed, moisture, and terrain all move the number. Fuel is a real line item at harvest, but it is usually smaller than the cost of a lost harvest day, which is why most operators size for capacity rather than economy.
Sometimes, but never assume. Head compatibility depends on the feederhouse faceplate, the coupler style, the drive shaft, and the multicoupler electrical and hydraulic connections. Heads can often be adapted across model generations within a brand with the right faceplate or adapter, but the cost varies widely. Confirm the specific combination before you buy either piece. If you already own heads, tell the salesperson what they are before you shop machines, because it can narrow the search considerably.
Winter. Trades land on dealer lots from November through February, which is when selection is widest and pricing is most flexible in the eastern Corn Belt. By late summer, the good machines are gone and what remains carries a harvest premium. Buying early also gives you time to complete an inspection, refresh concaves and sieves, fit and check the head, and calibrate the yield monitor before October, none of which can be done in a hurry once harvest starts.
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