How to Winterize Farm Equipment: The Storage Checklist That Saves You Spring Headaches

Maintenance · 7 min read

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Most spring repair weeks are actually made in the fall. The machine that won't start in April, the hydraulic hose that cracked over winter, the grain cart tire that sat flat for five months — those problems started the day the machine got parked, not the day you found them. A few hours of winterizing now is the cheapest insurance you'll ever buy for your equipment.

This isn't a dealership service menu. It's the practical checklist for parking tractors, combines, planters, sprayers, and tillage tools so they wake up in spring the way you left them.

Clean it before you park it

Start with the wash rack, because winter storage over a dirty machine is how corrosion gets its head start. Fertilizer residue on a spreader or tender, chemical residue in a sprayer, grain dust and chaff packed around a combine's engine bay — every one of those gets worse sitting idle for months.

Sprayers need more than a rinse. Run clean water through the entire system: tank, pump, filters, boom lines, nozzle bodies. Then drain everything that will drain — tank sump, filters, boom ends, pump. Water left in the plumbing expands when it freezes, and a split pump housing or cracked boom line is a spring problem you can prevent with ten minutes and a hose.

Spreaders and fertilizer equipment deserve special attention. Fertilizer is corrosive, and residue eats through paint, spinners, conveyors, and frames all winter. Wash them thoroughly, dry them, and touch up bare metal you exposed during the season.

Combines and grain carts: blow out the grain, chaff, and dust packed into the nooks — around the engine, under the cab, in the grain tank. That material holds moisture against metal, and it's nesting material for rodents.

Fuel: fill it, treat it, run it

Store fuel tanks full. A half-empty tank breathes as temperatures swing, and every breath pulls in moist air that condenses on the tank walls. Full tanks leave almost no air space for condensation to form.

Add fuel stabilizer before the final fill — dose by tank size, not fill amount — then run the engine long enough for the treated fuel to work through the filters and into the system. Ten to fifteen minutes at operating temperature is enough. Stabilizer in the tank that never reaches the injectors does nothing for the parts that actually need it.

On gas engines — augers, conveyors, pumps — the safest play is running them dry or draining the carburetor bowl. Gasoline goes stale faster than diesel, and a gummed-up carb is the classic reason a machine that ran fine in October won't run in April.

On diesel: make sure you're on winter-blend fuel or treated for cold flow before the hard freezes hit, since the tank you store is the fuel you'll start on. Drain the water separators one last time — water in the fuel system is what turns a cold morning into a no-start day.

Batteries: pull them or keep them charged

Cold kills batteries, and a dead battery that sits all winter sulfates into a dead battery forever. Pull them and store them, or leave them on a maintainer.

Pulled batteries live somewhere cool and dry — clean the terminals and cable ends first, charge the battery fully, and top off the charge every month or two. A battery that goes into storage half-charged comes out half-dead.

If you leave batteries in the machine, disconnect the negative cable to kill parasitic draws from cab electronics and controllers, which sip power even with the key off. A battery maintainer — not a plain trickle charger — holds it at full charge without cooking it over a five-month sit. Check the electrolyte on serviceable batteries and top off with distilled water.

Fluids: change the dirty, protect the cooling

If the engine oil is due — or close — change it before storage, not after. Used oil carries combustion acids and moisture that etch bearing surfaces over months of sitting. Fresh oil, fresh filter, and a clean start in spring.

Check coolant freeze protection with a refractometer or test strips — a measurement, not a guess. Coolant that's been topped off with straight water all season may not protect at the temperatures your shed actually sees. If protection is weak, refill with the correct antifreeze mix. Check hoses and clamps while you're there; a soft hose or weeping clamp is easier to replace in October than in a muddy yard in April.

Top off hydraulic and transmission reservoirs. Full reservoirs mean less air space, less condensation, and less internal corrosion. Note any weeping seals or wet fittings — that's your spring parts list.

Grease everything with a zerk. Every pivot, every bearing, every chain you can reach. Fresh grease pushes out moisture and leaves a protective coat behind. It's the single fastest thing you can do for a machine going into storage, and the one most often skipped.

Hydraulic cylinders: retract the rods

Extended cylinder rods sit exposed to moisture all winter, and pitted rods chew up seals. Park implements with cylinders fully retracted so the chrome is tucked inside the barrel. Where a cylinder has to stay extended, wipe the rod clean and give it a light coat of oil.

Cycle each hydraulic function once before shutdown so fresh oil is in the lines. Note any cylinder that drifts down or feels spongy — seal kits are a winter bench project, not a spring field repair. Cap any disconnected hose ends and plug quick-couplers so dirt and moisture stay out of the system.

Tires: inflate and park smart

Tires lose pressure over months of sitting, and a tire that sits flat develops sidewall damage that doesn't always show until it fails under load. Inflate every tire to the operating pressure for the load it'll carry in spring, and check pressures again when you wake the machine up.

Park on gravel, concrete, or boards under the tires — not soft ground that turns to mud in the freeze-thaw cycle and lets the machine settle into standing water. Chock the wheels so the parking brake isn't holding the load all winter; brakes can seize when engaged for months in damp conditions.

Keep the rodents out

Mice and rats destroy more stored equipment than rust does some years. They chew wiring harnesses, nest in air cleaners and exhaust stacks, and pack cabs with debris. A harness chewed in January is a no-start in April that no checklist predicted.

Seal the openings: stuff steel wool or hardware cloth in the exhaust stack and air intake — and tape a reminder to the steering wheel to pull them out in spring. Remove every bit of grain, seed, and feed from cabs, tanks, and hoppers. Food is what brings them in.

Clean the cab interior. Crumbs and wrappers turn a cab into a rodent condo. Traps or bait stations around the perimeter of the shed are worth more than anything inside the machine — stop them before they reach it.

Where it sleeps matters

Inside storage beats outside storage every time. If shed space is limited, prioritize the electronics-heavy machines — combines, self-propelled sprayers, planters with controllers — because they suffer most from freeze-thaw cycles and moisture. Simple tillage tools tolerate the outdoors better.

For machines stuck outside, cover correctly. A tarp draped tight traps moisture underneath and holds it against the paint. Support the cover so it sheds water and doesn't sit flat against the machine, leave the bottom open for ventilation, and anchor it well — a tarp flapping in January wind sandblasts paint.

And check the shed roof. A building with a drip over the combine's cab is worse than no shed at all, because it concentrates moisture in one spot.

The most valuable step: write down what you found

Winterizing doubles as your annual inspection, and the notes you take now become the spring work list. That weeping fitting, the tire with the sidewall cut, the cracking belt, the rough-feeling bearing — write it all down while you're looking at the machine. You will not remember it in April.

Keep it simple: machine, date, what you found, what it needs. If you want that list somewhere you'll actually find it, log it in your equipment maintenance app. In ShopLog, each machine keeps its own history — so the weeping seal you noted in October is already on the work list when you open the app in March, alongside the parts and labor you tracked all season.

The bottom line

Clean the machine, fill and treat the fuel, deal with the batteries, change the dirty oil, check the coolant, grease everything, retract the cylinders, inflate the tires, seal out the rodents, and write down what needs attention. Two or three hours per machine, once a year.

Spring-you is either starting the season or starting the repair list. The difference is what fall-you did before parking the shed door shut.