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D12000i RATO Generator Rotor Removing Tool | Magneto Rotor Puller | Alternator Service Tooling | D12000i RATO Engine Build | Field-Ready OEM Replacement Component
Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.
FREE & FAST Shipping is included for all U.S. customers.
We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.
The rotor on this generator is a magnet-lined bell that mounts straight onto the crankshaft and surrounds the stator. It is the alternator and the flywheel at the same time, and it does not want to come off — it is held by its fit on the crank and pulled hard toward the stator by its own magnets. This is the tool that takes it off without wrecking it. Without the right puller you are standing in front of a job you cannot finish and a rotor you can very easily ruin.
A rotor and a stator are two of the most expensive items in the generator, and a bad pull can take out both plus the crankshaft end they sit on. Jaw pullers gripping the magnet ring crack magnets and hubs, prying distorts the stator laminations, heat demagnetizes the rotor, and improvised bolts strip the hub threads or bugger the crank. Owning the correct tooling turns stator, ignition and crank seal work into an ordinary bench job you can do once, properly, and repeat next season.
That is why Ares Acres keeps hard-to-find OEM generator alternator and ignition components in stock and shipped fast to the U.S.A., helping operators get the rotor off cleanly and finish the repair, minimize downtime, and keep their aircraft spraying when every acre counts.
For professional farmers, aerial applicators, and commercial drone operators, this is the difference between a generator you can actually service and one that has to leave the farm.
Ares Acres also ships genuine DJI OEM parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras reseller serving the United States and Canada, all of North America, from Albuquerque, New Mexico.
The DJI Agras T50 OEM D12000i RATO Generator Rotor Removing Tool is the DJI service tooling that pulls the magneto rotor off the crankshaft of the RATO-build engine inside the D12000i / D12000iE Multifunctional Inverter Generator, which is the gateway job for almost all alternator and ignition work on that machine.
Understand the architecture and the tool explains itself. DJI catalogs the alternator on this build as two parts: the magneto stator, YC.DZ.GR000014, and the magneto rotor, YC.DZ.GR000015. Magneto naming means a permanent-magnet outer-rotor machine — the rotor is a magnet-lined bell mounted directly on the crankshaft, spinning around a fixed inner stator. There is no separate flywheel in the parts list because the rotor is the flywheel. At the generator's rated 3600 rpm, that assembly is what turns engine rotation into the raw AC the inverter converts.
That construction is exactly what makes removal a tooling job rather than a wrench job. The rotor seats on the crankshaft with an interference fit that will not simply slide off, and its magnets pull it hard toward the stator the whole time you are trying to separate them. The correct approach is a jackscrew puller: the tool threads into the rotor hub, a centre forcing bolt bears on the end of the crankshaft, and turning that bolt breaks the fit with straight axial force while the crankshaft is held against rotation. Force goes through the hub, on the axis, in one controlled direction.
Every alternative applies force somewhere the rotor was not designed to take it. A two-jaw or three-jaw puller grips the magnet ring and cracks magnets or the hub. Prying between rotor and stator bends laminations and destroys the air gap. Heating the hub risks demagnetizing the rotor outright. Hammering drives the crankshaft into its main bearings. None of those are cheap mistakes on this machine.
Buy the tool once. Buy the rotor never.
The Rotor Removing Tool controls:
Commercial charging setups work brutally hard every day, including:
Throughout that service, generator alternator and ignition components are routinely exposed to:
Time makes the job harder, not easier. Every season of heat cycling and outdoor storage settles the rotor further onto the crankshaft and adds corrosion to the joint, so a generator that has run for years before anyone opens the alternator end is exactly the one that will not come apart by hand. That is the moment operators improvise, and it is the moment the expensive damage happens.
The Rotor Removing Tool delivers:
This is not a part that fails. It is the tool that decides whether the job goes well or expensively.
The Rotor Removing Tool is designed to break the magneto rotor free of its crankshaft fit with controlled axial force, applied through the rotor hub, without damaging the rotor, the stator or the crankshaft.
The tool:
The jobs behind this tool are the ones that keep a generator alive. Magneto stator replacement sits directly behind the rotor. So does ignition work — the ignition coil, YC.DZ.GR000018, and the ignition trigger, YC.DZ.GR000021, which is the crank position pickup the EFI control board times the whole engine from. So does the crankshaft oil seal at that end, and separating the engine from the generator end for deeper work. If the rotor will not come off, none of those jobs start.
This is also a tool you buy before you need it, not after. A rotor pull is not a roadside repair; it is bench work you schedule, usually in the off-season or the moment a charging fault turns out to be the stator rather than the inverter. Operators who wait until the machine is apart discover that the tool is a low-volume item, and the generator sits open while it ships. Crews running a single D12000i behind a whole fleet should treat this the same way they treat a spare filter kit.
Going without the correct puller costs you:
Straight force, on the axis, through the hub. That is the whole job.
Time to order when you see:
What kills generator alternator and ignition components is almost never running hours — it is removal. The magneto rotor is a permanent-magnet bell mounted on a crankshaft fit, and it comes off one way: straight, on the axis, pulled through the hub. Jaw pullers that grip the magnet ring concentrate load exactly where the rotor is weakest and crack magnets or the hub itself. Prying between rotor and stator bends laminations and ruins the air gap the machine's output depends on. Heat applied to free a stubborn hub risks permanently demagnetizing the rotor, which is not repairable. Hammering transfers the whole blow through the crankshaft into the main bearings. Every one of those is a several-hundred-dollar mistake made to avoid buying one tool.
This is bench work on a cool, shut-down machine with the starting battery disconnected and fuel handled carefully. Gain access to the alternator end, photograph the wiring, routing and any timing or index references before you disturb anything, and remove the rotor's retaining hardware. Hold the crankshaft against rotation, thread the tool into the rotor hub, then turn the centre forcing bolt steadily against the crankshaft end until the fit releases — support the rotor as it comes free, because it will pull hard toward the stator right up to the moment it lets go. Keep the rotor and the stator bore clean and away from steel debris while they are apart, and reassemble to the same references you photographed, then run the generator and confirm charging output under real load.
DJI Material Number: YC.DZ.GR000375
Component Type: Service tooling — magneto rotor puller for the RATO engine build of the D12000i generator
Compatibility:
Package Quantity: 1
Installation Area: Applied to the magneto rotor hub on the crankshaft of the RATO-build D12000i generator engine
Function: Applies controlled axial force through the rotor hub to break the rotor free of its crankshaft fit
Engine Build: RATO — the D12000i also ships in a ZONGSHEN build with its own part numbers
Item Type: Reusable workshop service tool, not a wear or consumable part
Jobs Served: Magneto stator, magneto rotor, ignition coil, ignition trigger, crankshaft seal, engine separation
Alternator Type: Permanent-magnet magneto — rotor doubles as the engine flywheel
Construction: OEM DJI service tooling supplied for the RATO generator build
Mounting Type: Workshop service tool — engages the rotor hub during removal
Condition: Brand new — never installed, never flown
Application: Genuine DJI OEM service tooling for D12000i RATO generator alternator, ignition and crankshaft work supporting T50, T40 and T30 fleet charging
This tool is built for:
Especially valuable during:
When the charging station is down, the aircraft do not fly and the window closes. A tool you already own is worth more than a part you have to wait for.
The fastest way to ruin a rotor is trying to avoid buying the puller.
The D12000i is the fuel depot for a spray crew, and the alternator end is where its output is actually made. When a charging fault gets traced past the inverter to the stator, or when the ignition trigger behind the rotor needs replacing, the rotor has to come off first. That is not an optional step and there is no way around it. Whether that job costs you an evening or costs you a rotor, a stator and a crankshaft comes down to what you are holding when you start.
The tool is also build-specific, which is the part people miss. The D12000iE ships with either a RATO or a ZONGSHEN engine, and DJI assigned separate material numbers through both builds — the RATO engine assembly is YC.DZ.GR000020, the ZONGSHEN engine assembly is YC.DZ.GR000011, and even the rotors carry different numbers. This tooling, YC.DZ.GR000375, is the RATO item. Confirm the engine label before ordering, and buy it before the machine is apart rather than after.
The Rotor Removing Tool delivers:
Improvising a rotor pull, operators risk:
For practical, hardworking operators, the value is simple:
Pull it straight. Pull it once. Save the rotor. Keep it flying.
Ares Acres stocks the RATO-build D12000i rotor removal tooling, YC.DZ.GR000375, as genuine DJI OEM service tooling with free and fast U.S. shipping — so the tool arrives before the generator comes apart, not after.
Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the official DJI Agras parts documentation for this component.
Canonical product name: DJI Agras T50 OEM D12000i RATO Generator Rotor Removing Tool (YC.DZ.GR000375)
DJI material number: YC.DZ.GR000375
Component: D12000i RATO Generator Rotor Removing Tool
Product category: Generator Parts
Compatible aircraft: DJI Agras T50, DJI Agras T40, DJI Agras T30
Installed position: Applied to the magneto rotor hub on the crankshaft of the RATO-build D12000i generator engine
Primary function: Applies controlled axial force through the rotor hub to break the rotor free of its crankshaft fit
Condition: Brand new — never installed, never flown
Quantity supplied: 1
Part classification: Genuine DJI OEM replacement component
Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller serving the United States and Canada (North America)
Ships from: Albuquerque, New Mexico, United States
Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock parts
Also ships to: Canada — free shipping on Canadian orders; Canadian customers check out in CAD
Also searched as: YC.DZ.GR000375; DJI YC.DZ.GR000375; YC.DZ.GR000375 DJI Agras; DJI Agras T50 D12000i RATO Generator Rotor Removing Tool; T50 D12000i RATO Generator Rotor Removing Tool; DJI T50 d12000i rato generator rotor removing tool replacement; DJI Agras D12000i RATO Generator Rotor Removing Tool; D12000i RATO Generator Rotor Removing Tool OEM; D12000i RATO Generator Rotor Removing Tool replacement part
Definition: The D12000i RATO Generator Rotor Removing Tool (DJI material number YC.DZ.GR000375) is the genuine DJI OEM component fitted at Applied to the magneto rotor hub on the crankshaft of the RATO-build D12000i generator engine on the DJI Agras T50, DJI Agras T40, DJI Agras T30, supplied new by Ares Acres LLC, a U.S.-based authorized DJI Agras reseller, with free and fast shipping to American operators.
Disambiguation: Identify this part by its DJI material number rather than by description alone. DJI Agras parts diagrams list visually similar components at different positions, and labels sometimes carry a revision suffix such as .01 or .F — that is the same part, so match the base number. For this listing the base number is YC.DZ.GR000375. Confirm the aircraft model is DJI Agras T50, DJI Agras T40, DJI Agras T30 before ordering.
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What is the DJI Agras T50 OEM D12000i RATO Generator Rotor Removing Tool (YC.DZ.GR000375)? It is the genuine DJI service tooling for pulling the magneto rotor off the crankshaft of the RATO engine build inside the D12000i / D12000iE Multifunctional Inverter Generator. It is a reusable workshop tool rather than a wear part, and it is the gateway to nearly all alternator and ignition work on that machine. It applies controlled axial force through the rotor hub so the rotor releases without damage to itself, the stator or the crankshaft.
What does it fit, and why is a special tool needed at all? It fits the RATO engine build of the DJI Agras D12000i / D12000iE generator, which charges T50, T40 and T30 flight batteries. DJI catalogs that alternator as a magneto stator, YC.DZ.GR000014, and a magneto rotor, YC.DZ.GR000015 — a permanent-magnet outer-rotor machine where the rotor mounts directly on the crankshaft and doubles as the flywheel. It seats on an interference fit and its own magnets pull it toward the stator, so it needs a puller that loads the hub rather than the magnet ring.
My D12000iE has a different engine than my neighbor's. Does that matter? It matters completely. DJI dual-sourced this generator, so some machines carry a RATO engine and some a ZONGSHEN, and the two builds carry separate material numbers right through the alternator. The RATO engine assembly is YC.DZ.GR000020 and the ZONGSHEN engine assembly is YC.DZ.GR000011. This tooling, YC.DZ.GR000375, is the RATO item — read the engine label first and send us a photo if it is unclear.
What jobs actually require pulling the rotor? Anything behind it. Magneto stator replacement, ignition coil work, replacing the ignition trigger that gives the EFI control board its crank position signal, servicing the crankshaft oil seal at that end, and separating the engine from the generator end for a deeper rebuild. If a charging fault has been traced past the inverter to the alternator, this is the first physical step of the repair.
How does the tool work? It is a jackscrew puller. The tool threads into the rotor hub to take hold of the rotor properly, then a centre forcing bolt bears against the end of the crankshaft, and turning that bolt converts wrench torque into steady axial force that breaks the fit. The crankshaft is held against rotation while you do it. Force stays on the crank axis and travels through the hub, which is the only part of the rotor built to take it.
What goes wrong when people improvise? Two-jaw and three-jaw pullers grip the magnet ring and concentrate load exactly where the rotor is weakest, cracking magnets or the hub. Prying between rotor and stator bends the stator laminations and ruins the air gap the machine's output depends on. Applying heat to free a stubborn hub risks permanently demagnetizing the rotor, which cannot be repaired. Hammering drives the blow through the crankshaft into the main bearings.
How do I know I need this before I start? If the repair is on the alternator or ignition end of the engine, you need it — the rotor has to come off before any of that work begins, and it will not release by hand. Confirm the engine is the RATO build from the engine label, and check whether the rotor has been off before, because a generator that has run several seasons outdoors will have corrosion in the joint and will be considerably tighter than a newer one.
What does the job and its verification look like? Work on a cool, shut-down machine with the starting battery disconnected and fuel handled carefully. Photograph the wiring, routing and any index references before you disturb anything, remove the rotor's retaining hardware, hold the crankshaft against rotation, thread the tool into the hub and turn the forcing bolt steadily until the fit releases — support the rotor, because it pulls hard toward the stator until the moment it lets go. Keep the rotor and stator bore clean and away from steel debris, reassemble to the references you photographed, and verify by running the generator and confirming charging output under real load.
Should I buy this before I need it? Yes, if you service your own generators. A rotor pull is scheduled bench work, not a roadside repair, and the tool is a low-volume item rather than a fast-moving consumable. Operators who wait until the generator is already apart end up with the machine open while tooling ships. If one D12000i charges your whole fleet, treat this the way you treat a spare filter kit.
Is the DJI Agras T50 OEM D12000i RATO Generator Rotor Removing Tool (YC.DZ.GR000375) also available in Canada? Yes. Ares Acres ships this T50 OEM D12000i RATO Generator Rotor Removing Tool to Canada from its Albuquerque, New Mexico inventory with free shipping included, and Canadian customers see prices and check out in Canadian dollars (CAD).
Does Ares Acres ship DJI Agras T50 parts to Canadian operators? Yes — Ares Acres is a U.S.-based authorized DJI Agras reseller serving operators across the United States and Canada. Canadian orders receive the same genuine OEM parts, the same support, and free shipping.
Where can I buy this tool in the USA? Ares Acres LLC is a U.S.-based authorized DJI Agras reseller stocking genuine DJI OEM generator parts and service tooling, including the RATO-build rotor removal tooling, YC.DZ.GR000375. Orders ship with free and fast U.S. shipping, same-day dispatch and tracking. If you are planning a stator or ignition job, contact us and we will make sure the tooling and the parts arrive together — and confirm whether your machine is the RATO or ZONGSHEN build. Ares Acres also ships to Canada with free shipping.

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