A favorite tractor for municipal, institutional and government customers, the MD uses a powerful Kubota, three-cylinder, liquid-cooled diesel engine. One innovation highlight of the D21d is a self-reversing fan to keep the radiator clean. The D-series shares the same basic design as the T-series and is capable of using most all of the decks, implements and attachments built for the grass collection style machines.

20.9-HP, Kubota three cylinder diesel engine, liquid-cooled
Electric radiator fan with reversible self-cleaning action
Shock-mounted instrument panel
Remote air intake for engine
10.0 bushel (12.4 cu. ft.) catcher
10.5" (27 cm) grass handling blower
Splined PTO drive shaft with quick-disconnect coupler
4.7 gallon (17.8 liter) fuel tank
7 mph (11.3 kph) ground speed
Grammer suspension seat
Available in Side Discharge (SD) model



The Model D Teaser


The Model D Introduction


The Model D In-Depth


Decks, A Closer Look



Engine Kubota, D722, 3 cyl
Displacement 719 cc (43.9 cu in)
Max Power 20.9 hp @ 3600 rpm
Max Torque 34 ft lbs
Fuel Diesel (2-D)
Fuel Capacity 4.7 gal (17.8 liter)
Fuel Consumption (per hour) 0.76 gal (2.88 liter)
Cooling System Liquid, Radiator
Lubrication System Full Pressure w/ Filter
Weight 932 lbs[1], 1130 lbs[2]
Dimensions 49H x 49W x 91L[2]
[1]Tractor only, [2]Tractor with a typical 48" deck.

Available Decks

36" (91cm)
36" (91cm) Reverse
42" (107cm)
48" (122cm)
48" (122cm) Reverse
52" (132cm) Reverse
36" (91cm)
Side Discharge
42" (107cm)
Side Discharge
42" (107cm) Belt Drive
Side Discharge
48" (122cm)
Side Discharge
52" (132cm)
Side Discharge*
56" (142cm)
Side Discharge
62" (157cm)
Side Discharge
74" (188cm)
Side Discharge
36" (91cm)
42" (107cm)
42" (107cm)
48" (122cm)
52" (132cm)
Mulching Kit[1]

[1]Mulching Kits require and mount to an existing side discharge deck.

Available Add-ons


36" Snow
48" Dozer
40" Dethatcher[2]
Boom Sprayer[3]
Operator Cab


Hitch Mount
46" Dozer
42" Two-Stage
47" Rotary
Debris Blower
Loader Bucket


Narrow Drive
Wide Drive
Low Profile
Drive Tires
Drive Tires
Tire Chains
Foamed Deck Tire

Deck Lift
Power Deck Lift
Tail Wheel Lock
Spread Axle
Tail Wheel
Blower Lockout

Power Dump
Exhaust Screen
with Large holes
Catcher Bins
Tail Weight
Instrument Panel

Break-Away Blades
Adjustable Footrests
Curb Jumper

[1]We recommend the use of Narrow Drive Tires with the 36" Snow Blower.
[2]Deck Attachment for 36", 42", 48", and 52" inch decks.
[3]Deck Attachment for 42", 48", 52", and 62" inch decks. Kit required for 52" and 62" decks.
[4]All Implements require an Implement Hitch Mount.
[5]Shown with optional Operator Cab, which is not included.


With financing options from both Sheffield and Yard Card, we have a program perfect for your needs including:

  • No Monthly interest for 48 months with Equal Payments
  • Differed Payments for up to 8 months.

You can own and operate your Walker Mower all season before making your first payment. Imagine paying off your machine in a single payment with your extra profits thanks to the Walker Productivity Advantage.

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Get full details on all current financing options at your local Walker Dealer



Sheffield Financial

DurationInterest RateNon-commercial TermsCommercial Terms
42 Months 0.00% [0.37%*] APR No payments 30 days No payments 120 days
48 Months 0.00% [0.33%*] APR No payments 30 days No payments 120 days
36 Months 3.99% [4.43%*] APR No payments 30 days No interest for 90 days, no payments for 120 days
48 Months 1.99% [2.32%*] APR No payments 30 days No interest until 3/1/2017, no payments until 4/1/2017
60 Months 3.99% [4.26%*] APR No payments 30 days No interest until 3/1/2017, no payments until 4/1/2017

*Example based on Amount Financed of $7,500 and $0 Down Payment. Minimum Amount Financed $1,500; Maximum Amount Financed $50,000. Other qualifications and restrictions may apply. An origination fee of $50* ($150 for commercial customers) will be added to the amount financed in the above example. Financing promotions void where prohibited. Offer effective on all new and unused Walker Mowers & Add-ons purchased from a participating Walker dealer between 10/1/16 and 1/31/17. Offer subject to change without notice. The above financing programs are offered by Sheffield Financial, a Division of Branch Banking and Trust Company, Member FDIC. Subject to credit approval. Approval, and any rates and terms provided, are based on credit worthiness. Rate advertised is based on minimum bureau risk score of 1700 or 2660. Other financing offers are available. See your local dealer for details.


Yard Card - TD Bank

DurationInterest RateTerms
36 Months 0.00% APR Equal payments. No payments 30 days
48 Months 0.00% APR Equal payments. No payments 30 days
60 Months 1.90% APR No payments 30 days
54 Months 2.99% APR No payments 30 days

No Monthly Interest for 48 Months with Equal Payments: Minimum purchase amount of $1,500 is required to qualify for this offer. There is a promotional fee of $125 for this transaction.The monthly payment is calculated by dividing the sum of the purchase amount and the promotional fee amount by the number of months in the offer and will pay off the balance if all payments are made on time. Other transactions, including fees and other charges, may affect your overall monthly payment amount. Minimum interest charge is $2. Purchases that do not qualify for this offer may be subject to Purchase APR, currently 28.99% for new accounts and 20.49% - 29.99% for existing accounts. Offer expires 12/31/2016. This offer may not be combined with other special financing offers. Prior purchases excluded and account must be in good standing. Offer subject to credit approval on a Yard Card credit card account. See store associate for more information.



Spec Sheets


Released Class Model Type Model S/N Range Manual P/N Download
01/25/2016 D-Series Mower D21d Owner 124860 - CURRENT 7000-13 PDF
02/15/2005 D-Series Mower MD Owner 76788 - 124859 7000-8 PDF
12/01/2003 D-Series Mower MD Owner 53481 - 76787 7000-6 PDF
06/08/1999 D-Series Mower MD Owner 29676 - 53480 7000-4 PDF
03/01/1995 D-Series Mower MD Owner 16369 - 29675 7000-1 PDF
04/01/1992 D-Series Mower MD Owner 11756 - 16368 7895 PDF
06/01/2009 D-Series Mower MD Parts 103914 - CURRENT 7000-11 PDF
09/15/2007 D-Series Mower MD Parts 92037 - 103913 7000-10 PDF
03/01/2006 D-Series Mower MD Parts 79108 - 92036 7000-9 PDF
05/01/2004 D-Series Mower MD Parts 72868 - 79107 7000-7 PDF
03/01/2003 D-Series Mower MD Parts 60192 - 72867 7000-5 PDF
01/20/1998 D-Series Mower MD Parts 29676 - 60191 7000-2 PDF
03/01/1993 D-Series Mower MD Parts 11756 - 29675 7895-1 PDF

Buying A Walker

All Walker Mowers sales are made by a local servicing dealer only.

We believe buying a mower is the beginning of a series of relationships that allows you, our dealers, our distributors and Walker to operate in what we refer to as "A Family Style" of business.

Dealer Locator

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Contact Walker


Walker Manufacturing
5925 East Harmony Road
Fort Collins, CO 80528