Parts for Finishing mowers

Parts Manual
Manual 970273B — March 2026  ·  C28-RD4, C28-RD5, C28-RD6  ·  Serial #391263 & Above
C28-RD4  ·  C28-RD5  ·  C28-RD6
Model:

Frame

Main frame assembly for all C28 models.

Frame diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
1 0151501P Frame 48" rear discharge C28-RD4 1
1 0251501P Frame 60" rear discharge C28-RD5 1
1 0351501P Frame 72" rear discharge C28-RD6 1
3 0108817 Belt shield 48" C28-RD4 2
3 0208817 Belt shield 60" C28-RD5 2
3 0308817 Belt shield 72" C28-RD6 2
4 0051581 Central plate 48" C28-RD4 1
4 0051583 Central plate 60" C28-RD5 1
4 0051585 Central plate 72" C28-RD6 1
5 0006647 Cap All 3
7 0051858 Rear protection 60" outer C28-RD5 2
7 0051859 Rear protection 72" outer C28-RD6 2
8 0051856 Rear protection 48"–72" inner All 2
9 0008818 Bolt HH M10-1.50×110 C8.8 Z F All 2
10 0014106 Nut ES M10-1.50 Z TK All 2
11 0030157 Washer fender Ø10 Z All 2
12 0033176 Bolt HH M10-1.50×25 C8.8 Z F All 4
13 0002034 Washer flat Ø10 W All –
14 0030156 Nut PT M10-1.50 C6 TK Z All –
15 0001280 Washer lock Ø10 Z All 2
16 0001279 Nut HH M10-1.50 C6 TK Z All 2
17 0006349 Bolt HH M10-1.50×20 C8.8 Z F All –
18 0015237 Nut ES M10-1.50 Z TN All 4
19 0001077 Washer lock Ø12 Z All 4
20 0003038 Nut HH M12-1.75 C6 Z TK All 4
21 0008663 Protection, shaft All 1
22 0051570 Cap All 4

Three Point Hitch & Wheel Arms

Three-point hitch hardware and wheel arm assemblies.

Three Point Hitch & Wheel Arms diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
1 0051822 Top hitch support 48"–72" All 2
2 0051824 Top hitch arm 48" C28-RD4 2
2 0051826 Top hitch arm 60" C28-RD5 2
2 0051828 Top hitch arm 72" C28-RD6 2
3 0006829 Spacer All 1
4 0006828 Top hitch plate All 1
5 0006891 Bolt HH M16-2.00×140 C8.8 Z P All 1
6 0005581 Nut PT M16-2.00 C6 Z TK All 7
7 0032687 Bolt HH M16-2.00×40 C8.8 Z F All 2
8 0006578 Bolt HH M16-2.00×45 C8.8 Z F All 4
9 0009538 Bolt HH M20-2.50×45 C8.8 Z F All 2
10 0005507 Nut PT M20-2.50 C6 TK Z All 2
11 0005550 Hitch pin All 2
12 0018266 Lynch pin Ø11×45 All 2
13 0051849 Spacing disc All 2
14 0005351 Washer lock Ø20 Z All 2
15 0005542 Nut HH M20-1.50 C6 Z MD All 2
16 0008785 Wheel yoke All 4
17 0008783 Pin, wheel yoke All 4
18 0008528 Spacer All 4
19 0006615 Bolt HH M14-2.00×140 C8.8 Z P All 4
20 0030358 Nut PT M14-2.00 C6 Z TK All 4
21 0051772 Wheel arm 48" C28-RD4 2
21 0051781 Wheel arm 60" C28-RD5 2
21 0051783 Wheel arm 72" C28-RD6 2
22 0001065 Grease fitting M10-1.00 All 4
23 0006586 Spacer 1", height adjustment All 8
24 0006587 Spacer ½", height adjustment All 8
25 0026185 Bolt HH M10-1.50×90 C8.8 Z P All 6
26 0051776 Washer flat SP Ø10 W All 6
27 0002034 Washer flat Ø10 W All 6
28 0001280 Washer lock Ø10 Z All 6
29 0001279 Nut HH M10-1.50 C6 TK Z All 6
36 0051817 Linking plate All 2
37 0008526 Wheel hard tire, complete All 4
37 0006613 Bushing, hard tire (not shown) All 8

Transmission & Spindle

Belt drive, pulleys, tensioner, spindle assemblies, and blades.

Transmission & Spindle diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
1 0008531 Pulley SPB 120×1 C28-RD4 3
1 0008666 Pulley SPB 130×1 C28-RD5 3
1 0008881 Pulley SPB 160×1 C28-RD6 3
2 0008561 Pulley, belt tensioner All 2
3 0008630 Belt BX 98 C28-RD4 1
3 0008670 Belt BX 112½ C28-RD5 1
3 0008950 Belt BX 140 C28-RD6 1
4 0051740 Spring All 1
5 0008623 Pulley SPB 250×1 All 1
6 0051741 Support, belt tensioner (RD4) C28-RD4 1
6 0051745 Support, belt tensioner (RD5/RD6) C28-RD5 C28-RD6 1
7 0008571 Hitch plate (RD4) C28-RD4 1
7 0051755 Hitch plate (RD5) C28-RD5 1
7 0051757 Hitch plate (RD6) C28-RD6 1
8 0051751 Bolt belt tensioner SP M10-1.50 All 1
9 0017354 Washer fender Ø16 Z All 1
10 0030156 Nut PT M10-1.50 C6 TK Z All 14
11 0091281 Bolt HH M10-1.50×35 C8.8 Z F All 1
12 0001279 Nut HH M10-1.50 C6 TK Z All 1
13 0008576 Bolt HH M20-2.50×65 C8.8 Z F All 1
14 0005508 Nut HH M20-2.50 C6 Z MD All 1
15 0046555 Washer flat Ø20 Z All 4
16 0005507 Nut PT M20-2.50 C6 TK Z All 2
17 0006698 Nut SP M25-1.50 Z All 3
18 0029036 Grease fitting Ø8, press in All 3
19 0001278 Bolt HH M10-1.50×30 C8.8 Z F All 12
20 0006659 Bolt blade SP M14-1.50×32 All 3
21 0008560 Washer conical spring Ø18 Z All 3
22 0006795 Blade standard 48" C28-RD4 3
22 0006641 Blade standard 60" C28-RD5 3
22 0006845 Blade standard 72" C28-RD6 3
22 0006795B Blade high lift 48" (option) C28-RD4 3
22 0006641B Blade high lift 60" (option) C28-RD5 3
22 0006845B Blade high lift 72" (option) C28-RD6 3
22 0006795M Blade mulching 48" (option) C28-RD4 3
22 0006641M Blade mulching 60" (option) C28-RD5 3
22 0006845M Blade mulching 72" (option) C28-RD6 3
22 0006795F Blade flat 48" (option) C28-RD4 3
22 0006641F Blade flat 60" (option) C28-RD5 3
22 0006845F Blade flat 72" (option) C28-RD6 3
23 0008557 Spindle shaft All 3
24 0006639 Key 8x7x25 All 3
25 0006636 Cover All 3
26 0006606 Shim Ø25x35x2 All 3
27 0006626A Bearing 6205-ZZ All 3
28 0008538 Support, spindle shaft All 3
29 0008536 Spacer All 3
30 0006634A Bearing 6205-Z All 3
31 0008533 Spindle assembly (complete) All –

Gearbox 540 RPM (Standard)

Complete gearbox breakdown — fill with ~20 fl.oz. SAE 90W gear oil.

Gearbox 540 RPM (Standard) diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
GB 0500668 Gearbox complete 540 rpm All –
1 0010192 Oil seal 40.68.10 All 1
2 0012149A Bearing 6208 All 2
3 0008892 Input shaft All 1
4 0008609 Cap All 1
5 0001806 Nut HH M08-1.25 C6 Z TK All 8
6 0010177 Breather cap All 1
7 0008601 Gasket, breather cap All 1
8 0010171 Bolt SC M08-1.25×50 C8.8 Z P All 8
9 0056681 Housing w/o fill hole All 1
10 0003038 Nut HH M12-1.75 C6 Z TK All 4
11 0001077 Washer lock Ø12 Z All 4
12 0050192 Pinion gear All 1
13 0025332A Bearing 6207 All 2
14 0010196 Spacer All 1
15 0034196 Shim Ø35x45x2.5 All 1
16 0042122 Snap ring, outer Ø35 All 1
17 0002295 Oil seal 35.62.10 All 1
18 0051581 Central plate 48" C28-RD4 1
18 0051583 Central plate 60" C28-RD5 1
18 0051585 Central plate 72" C28-RD6 1
19 0006688 Key 7x8x35 All 1
20 0008623 Pulley SPB 250×1 All 1
21 0006698 Nut SP M25-1.50 Z All 1
22 0008893 Ring gear All 1
24 0015263 Bolt HH M10-1.50×120 C8.8 Z P All 2
25 0002034 Washer flat Ø10 Z All 4
26 0030156 Nut PT M10-1.50 C6 Z TK All 2
27 0056682 Housing w/fill hole All 1
28 0056683 Cap All 1

Driveline (Binacchi)

PTO driveline components — Serial #320236 & above.

Driveline (Binacchi) diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
DL 0500110 Driveline, complete (RD4) C28-RD4 –
DL 0500111 Driveline, complete (RD5) C28-RD5 –
DL 0500112 Driveline, complete (RD6) C28-RD6 –
1 0800203B PTO yoke All 2
2 08002021B Yoke, outer tube All 1
3 0008679 Roll pin Ø8×55 All 1
4 1363052AB Outer tube (RD4) C28-RD4 1
4 1363062AB Outer tube (RD5) C28-RD5 1
4 1363077AB Outer tube (RD6) C28-RD6 1
5 08202B Cross w/bearing All 2
6 1294052AB Inner tube (RD4) C28-RD4 1
6 1294062AB Inner tube (RD5) C28-RD5 1
6 1294077AB Inner tube (RD6) C28-RD6 1
7 08002011B Yoke, inner tube All 1
8 0026342 Roll pin Ø8×50 All 1
9 1B020642B Outer tube w/yoke, complete (RD4) C28-RD4 1
9 1B020742B Outer tube w/yoke, complete (RD5) C28-RD5 1
9 1B020892B Outer tube w/yoke, complete (RD6) C28-RD6 1
10 1B020641B Inner tube w/yoke, complete (RD4) C28-RD4 1
10 1B020741B Inner tube w/yoke, complete (RD5) C28-RD5 1
10 1B020891B Inner tube w/yoke, complete (RD6) C28-RD6 1
11 950464B Decal "DANGER – Guard missing" All 1
12 5502C001B Locking ring, outer tube All 1
13 1902C001B Standard cone All 2
14 5402C001B Rigid cone, outer tube All 1
15 961NB064B Shield, outer tube (RD4) C28-RD4 1
15 961NB074B Shield, outer tube (RD5) C28-RD5 1
15 961NB089B Shield, outer tube (RD6) C28-RD6 1
16 4B020642B Shield, outer tube w/cone (RD4) C28-RD4 1
16 4B020742B Shield, outer tube w/cone (RD5) C28-RD5 1
16 4B020892B Shield, outer tube w/cone (RD6) C28-RD6 1
17 955NB064B Shield, inner tube (RD4) C28-RD4 1
17 955NB074B Shield, inner tube (RD5) C28-RD5 1
17 955NB089B Shield, inner tube (RD6) C28-RD6 1
18 5402C002B Rigid cone, inner tube All 1
19 4B020641B Shield, inner tube w/cone (RD4) C28-RD4 1
19 4B020741B Shield, inner tube w/cone (RD5) C28-RD5 1
19 4B020891B Shield, inner tube w/cone (RD6) C28-RD6 1
20 5502C002B Locking ring, inner tube All 1
21 98052242B Self tapping screw PN M4.8×22 Z All 6
22 3CE02064B Shield, complete (RD4) C28-RD4 1
22 3CE02074B Shield, complete (RD5) C28-RD5 1
22 3CE02089B Shield, complete (RD6) C28-RD6 1
23 52000001B Chain, anti-rotation All 2
24 09872101B Operator's manual, driveline Binacchi All 1
25 09872010B Decal "rotating driveline" pictorial All 1
26 950463B Decal "DANGER – Rotating driveline" All 1

Decals

Safety decals, model identification, and documentation labels for all C28 models.

Decals diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
1 950109B Decal "DANGER – Avoid injury from PTO" All 1
2 950818B Decal "DANGER – Rotating blades; Thrown objects" All 2
3 950213B Decal "DANGER – Replace shields", placed under belt shields All 2
4 950406B Decal "WARNING – Falling off" All 1
5 950407B Decal "WARNING – Crushing and pinching hazard" All 1
6 950111B Decal "CAUTION – To avoid serious injury" All 1
7 950366B Decal, red reflective All 2
8 950314B Decal "C28" All 1
8 950249B Decal "RD4" C28-RD4 1
8 950250B Decal "RD5" C28-RD5 1
8 950251B Decal "RD6" C28-RD6 1
9 9370176 Decal "Rotomec"; C28-RD4 C28-RD4 2
9 9370139 Decal "Rotomec"; C28-RD5, RD6 C28-RD5 C28-RD6 2
10 950358B Decal "Made in USA" All 1
OM 960273B Operator's Manual C28-RD4, C28-RD5, C28-RD6 All 1
PM 970273B Parts Manual C28-RD4, C28-RD5, C28-RD6 All 1

Accessories: Front Roller & Mulching Kit

Optional front roller and mulching kit accessories.

Accessories: Front Roller & Mulching Kit diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
KIT 37-004-600 Mulching kit 48", complete C28-RD4 –
KIT 37-005-600 Mulching kit 60", complete C28-RD5 –
KIT 37-006-600 Mulching kit 72", complete C28-RD6 –
KIT 37-001-600 Front roller, complete All –
5 0091281 Bolt HH M10-1.50×35 C8.8 Z F All 2
6 0030157 Washer fender Ø10 Z All –
11 0003038 Nut HH M12-1.75 C6 Z TK All 6
18 0008929 Roller pin All 1
19 0067358 Front roller 3" All 1
20 0112087 Cotter pin Ø4×50 Z All 1
21 0008923 Roller support, right All 1
22 0208924 Roller support, left All 1
23 0006349 Bolt HH M10-1.50×20 C8.8 Z F All –
24 0002034 Washer flat Ø10 Z All 4
25 0030156 Nut PT M10-1.50 C6 Z TK All –
26 0008755 Baffling, front 48" C28-RD4 1
26 0115824 Baffling, front 60" C28-RD5 1
26 0008759 Baffling, front 72" C28-RD6 1
27 0008756 Baffling, rear 48" C28-RD4 1
27 0115825 Baffling, rear 60" C28-RD5 1
27 0008760 Baffling, rear 72" C28-RD6 1
28 0006795M Mulching blade 48" C28-RD4 3
28 0006641M Mulching blade 60" C28-RD5 3
28 0006845M Mulching blade 72" C28-RD6 3
30 0033176 Bolt HH M10-1.50×25 C8.8 Z F All 4

Accessories: Quick-Hitch Adapter

Field conversion kit for quick-hitch attachment.

Accessories: Quick-Hitch Adapter diagram

Click a number on the diagram to highlight the part →

Ref Part Number Description Models Qty Cart
KIT 37-001-700 Quick-Hitch Adapter, complete (field conversion kit) All 1
1 503753B A frame support All 1
2 503754B Floating top link All 1
3 0051941 Floating yoke All 2
4 503755B Spacer 1-3/8" All 2
5 503756B Spacer 1-1/8" All 1
6 0051817 Linking plate All 2
7 503757B Bushing All 2
8 0006577 Bolt HH M16-2.00×60 C8.8 Z P All 2
9 0008029 Bolt HH M16-2.00×90 C8.8 Z P All 1
10 0070346 Bolt HH M16-2.00×110 C8.8 Z P All 1
11 0008576 Bolt HH M20-2.50×65 C8.8 Z F All 2
12 0051953 Bolt HH M20-2.50×110 C8.8 Z P All 1
13 0051954 Bolt HH M20-2.50×140 C8.8 Z P All 2
14 0015686 Nut HH M20-2.50 C6 Z TN All 2
15 0005581 Nut PT M16-2.00 C6 Z TK All 4
16 0005507 Nut PT M20-2.50 C6 TK Z All 5
17 0008568 Washer flat Ø16 W All 4
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