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John Deere · COMPACT TRACTOR ATTACHMENTS

John Deere 4066M Heavy Duty
Attachments that fit.

The John Deere 4066M Heavy Duty has 65.9 hp, 51.9 PTO hp, a hydrostatic drive, a Category 1/2 hitch and 2,500 lb of lift at 24 inches. That is 1.9 over Woodland Mills WC68’s 50 and TMG’s 50-PTO-hp cap.

51.9PTO hp65.9engine hp1 & 2hitch category2,500lb lift at 24 in.
Wood chippers that fitFlail mowers that fit

By Acreage Equipment · Reviewed November 13, 2026 · Specification research, not a field test

John Deere 4066M Heavy Duty hub: John Deere 4066M Heavy Duty compact tractor studio photo
Manufacturer photo · John Deere

PTO WOOD CHIPPERS FOR THE 4066M HEAVY DUTY

Chippers that fit the 4066M Heavy Duty.

7 of 19 pto wood chippers we track pass the published power, hitch and speed screen. Each still has a detail to confirm with the seller.

Full chipper guide
WoodMaxx MX-9900 PTO wood chipperPTO chipper

WoodMaxx

MX-9900

9″ maximum chip diameter, inches · 25 PTO hp minimum; maximum not stated

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

$6,990checked November 7, 2026
Check current price at WoodMaxx
Fit details
Woodland Mills WC88 PTO wood chipperPTO chipper

Woodland Mills

WC88

8″ maximum branch diameter, inches · 35–100+ PTO hp

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

$3,995checked November 7, 2026
Check current price at Woodland Mills
Fit details
WoodMaxx WM-8M PTO wood chipperPTO chipper

WoodMaxx

WM-8M

8″ max. chip diameter · 19 PTO hp minimum; maximum not stated

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

$3,690checked November 7, 2026
Check current price at WoodMaxx
Fit details
WoodMaxx MX-8800 PTO wood chipperPTO chipper

WoodMaxx

MX-8800

8″ maximum chip diameter, inches · 20 PTO hp minimum; maximum not stated

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

$5,890checked November 7, 2026
Check current price at WoodMaxx
Fit details
Wallenstein BX72S PTO wood chipperPTO chipper

Wallenstein

BX72S

7″ max. chip diameter · 50–85 engine hp · official U.S. page

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

Check seller priceAsk for a quote
Explore buying options at Wallenstein
Fit details
Wallenstein BX72RI PTO wood chipperPTO chipper

Wallenstein

BX72RI

7″ max. chip diameter · 45–85 engine hp · current U.S. page (manual table: 50–85 hp for the BX72R)

Possible — confirm details

Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.

Check seller priceAsk for a quote
Explore buying options at Wallenstein
Fit details

1 more possible option in the full comparison table — see all.

12 ruled out by published specs

FLAIL MOWERS FOR THE 4066M HEAVY DUTY

Flail mowers that fit the 4066M Heavy Duty.

9 of 23 flail mowers we track pass the published power, hitch and speed screen. Each still has a detail to confirm with the seller.

Full flail mower guide

3 more possible options in the full comparison table — see all.

14 ruled out by published specs
Scope of this guideU.S. 4066M Heavy Duty · 3F/3R hydrostatic · 4WD · open station · independent PTO. Each configuration below states the model and equipment covered by its sources.

Woodland Mills WC88, WoodMaxx’s chippers and Wallenstein BX72S screen for chipping. WoodMaxx FM-78, Farmer-Helper FH-EFGC and all three Land Pride FM25 widths screen for mowing.

  • Brochure: 65.9 hp, 51.9 PTO hp (hydro only), 3F/3R hydrostatic; independent 540 PTO.
  • Hitch: Category 1/2; 2,500 lb at 24 in., 3,130 lb at the link ends.
  • WoodMaxx full chipper capacity (50+ PTO hp): reached.
  • Woodland Mills WC68 (to 50) and TMG (50 PTO hp cap): 1.9 over.
  • Land Pride FM2584 (from 49 hp): inside on both figures.
  • Standard 4066M: 57 PTO hp (hydro), Category 1; the page’s spec table conflicts.

Choose the exact configuration.

U.S. 4066M Heavy Duty · 3F/3R hydrostatic · 4WD · open station · independent PTO

51.9 PTO hp

Current U.S. John Deere 4066M Heavy Duty (open station, 4WD, 3F/3R hydrostatic) from the 4 Series brochure the current page links and the current page. 4,255 lb.

Engine power
65.9 hp · 65.9 hp in the 4 Series brochure’s 4066M Heavy Duty column; the current page rounds it to 65 hp (SAE J1995). It is not PTO power.
Rear hitch
Category 1/2
Lift at 24 inches
2,500 lb · 2,500 lb “Lift Capacity (24 in. behind link arms)” in the 4 Series brochure’s Heavy Duty column; 3,130 lb at the link ends.
Lift at link ends
3,130 lb
Hydraulics
Brochure lists 15.9 gpm total capacity, open center, dual independent pumps; remote control valves “NA” in the Heavy Duty column.
Pressure
Not published in the reviewed brochure.
Find attachments for this tractor

Where the documents disagree.

4066M Heavy Duty page specification table

The current 4066M Heavy Duty page’s text describes an eHydro transmission and a Category 1 and 2 hitch, but its specification table lists a John Deere PowerTech 4045 engine, PowrReverser 16F/16R, “Category 2; convertible to 1” and Saltillo manufacture, which match neither the page text nor the brochure it links.

The table appears to describe another tractor. PTO power, hitch categories and lift come from the brochure (51.9 PTO hp, Category 1/2, 2,500 lb); the table states no PTO power or lift, and either hitch wording takes Category 1 and 2, so no fit result changes.

FOLLOW THE NUMBERS

Sources & documentation

Research record reviewed November 13, 2026. Confirm the current manual and the exact revision supplied with your machine.

  1. John Deere 4 Series compact utility tractor brochure 3928970 (linked from the current Heavy Duty pages)Specifications, 4052M Heavy Duty and 4066M Heavy Duty columns: HP, PTO HP hydro transmission, 3F/3R hydrostatic, independent 540 PTO, rear hitch Category 1/2, lift capacity 24 in. behind link arms 2,500 lb and at link ends 3,130 lb, OOS 4,255 lb
  2. John Deere 4066M Heavy Duty current U.S. product pageRated Engine Power 65 hp (SAE J1995); Category 1 and 2 implement compatibility
  3. Official U.S. WC88 page: price, capacity and drive system
  4. Current linked WC88 operator manual, Rev C, 22-Aug-2022
  5. Official WM-8M page: configuration, 775 lb hitch weight and price
  6. WM-8M manual linked by current WoodMaxx manual index
  7. WoodMaxx FAQ, question 1: mechanical versus hydraulic feed
  8. Official FM-78H page: hammer option, price, equipment and conflicting weights
  9. Current FM-62/62H and FM-78/78H manual: printed p40 / PDF p41 specifications
  10. WoodMaxx manual index: Models 2025 to current
  11. Official FM-78 page: exact hammer variant, price and equipment
  12. Official MX-9900 page: power/capacity claims, feed, hitch and current sale price
  13. MX-9900 manual Rev C, September 18, 2026: specifications and setup
  14. Official Betstco FH-EFGC155 product page: exact model, current USD offer, dimensions and conflicting specifications
  15. Currently linked EFGC standard manual, Revision 12-12-17, pp16–23
  16. Official EFGC series: fixed models and separate hydraulic-offset kits
  17. Official Betstco manual index
  18. Wallenstein BX72S current U.S. page — engine power, current hitch categories, capacity, accessories and reference mass
  19. BX72S official support page — current operator/setup documents
  20. BX-S operator manual Z97085_En, Rev Jan-2025 — pp14,18–22,26,28,30,40
  21. PTO shaft instructions Z97844_En, Rev Aug-2024 — tractor/quick-hitch sizing
  22. Land Pride FM25 current North American family and model listing
  23. Official FM25 public catalog response — active models, gallery and linked documents
  24. FM25 operator manual 333-138M, printed 7/1/24 — requirements pp14–20, options pp15,30,33, specifications p39
  25. Official FM25 brochure — printed p12 model table
  26. Farmry HFS87 official product page — tractor power range, gearbox HP, widths, linkage, weight and price
  27. Farmry HFS/HFSS Series operator manual, Rev 1.6 — printed p17 specifications

FROM YOUR TRACTOR TO THE JOB

Equipment guides for this model.

FIELD GUIDE

John Deere 4066M Heavy Duty wood chippers: 50+ reached

WoodMaxx ties full 8- and 9-inch chipper capacity to 50+ hp, and the John Deere 4066M Heavy Duty has 51.9 PTO hp in Deere’s 4 Series brochure. Woodland Mills WC88 and Wallenstein BX72S screen too; WC68 and the 45-hp chippers stop below it.

Read the guide →FIELD GUIDE

John Deere 4066M Heavy Duty flail mowers: FM2584 or FM-78H

Land Pride lists FM2584 from 49 hp; the John Deere 4066M Heavy Duty clears it on both its 51.9 PTO hp and 65.9 engine hp. WoodMaxx FM-78, Farmer-Helper FH-EFGC and Land Pride FM2560 and FM2572 screen too.

Read the guide →