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Scott Bonnar – Parts Buying Guide

Rover Scott Bonnar 45 Cylinder Mower — Spare Parts List (SPV51)

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The Rover-era spare parts list for the Scott Bonnar Reel Mower 45 with 6 blade cutter, covering the chassis, handlebars, cutter system and drive system. Every Rover part number is listed below with its description and quantity, alongside the exploded diagram for each of the four sheets.

  • ModelsReel Mower 45, 6 blade cutter
  • Pages10
  • PublicationSPV51 · Revision D, 20/12/2005

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Exploded chassis diagram for the Rover Scott Bonnar Reel Mower 45, SPV51 sheet 01
Sheet 01 — chassis diagram · click to enlarge
Rover Scott Bonnar Reel Mower 45 chassis parts list, original issue
Sheet 01 — chassis parts list · click to enlarge
Exploded chassis diagram for the Rover Scott Bonnar Reel Mower 45, revision D
Sheet 01 Revision D — chassis diagram · click to enlarge
Rover Scott Bonnar Reel Mower 45 chassis parts list, revision D of 20 December 2005
Sheet 01 Revision D — chassis parts list · click to enlarge
Exploded handlebar diagram for the Rover Scott Bonnar Reel Mower 45
Sheet 02 — handlebars diagram · click to enlarge
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Rover Scott Bonnar Reel Mower 45 handlebar parts list
Sheet 02 — handlebars parts list · click to enlarge
Exploded cutter system diagram for the Rover Scott Bonnar Reel Mower 45
Sheet 03 — cutter system diagram · click to enlarge
Rover Scott Bonnar Reel Mower 45 cutter system parts list
Sheet 03 — cutter system parts list · click to enlarge
Exploded drive system diagram for the Rover Scott Bonnar Reel Mower 45
Sheet 04 — drive system diagram · click to enlarge
Rover Scott Bonnar Reel Mower 45 drive system parts list
Sheet 04 — drive system parts list · click to enlarge

Full parts list (text)

This is the Rover-era spare parts list (SPV51) for the Scott Bonnar Reel Mower 45 — 6 blade cutter, copyright 12/2003. It is organised as four sheets, each pairing an exploded diagram with its parts table: Chassis, Handlebars, Cutter System and Drive System.

Note that these are Rover part numbers (the A… prefix), which are not the same as the numbers in the older Scott Bonnar books — though many refer to the same physical part. If you are cross-referencing, compare the descriptions as well as the numbers.

The chassis sheet is included at Revision D (20/12/2005), the later of the two versions printed in the original document.

Sheet 01 — Chassis (Revision D, 20/12/2005)

Rover Scott Bonnar Reel Mower 45 chassis parts, SPV51 sheet 01 revision D
Item Part No. Description Qty
1 A10538 Mower frame assembly 1
2 A455777 Chain case 1
3 A454387 Deflector assembly 1
4 J454459R Grass box assembly 1
5 A331010 Clutch fork assembly 1
6 A333067 Clutch fork pivot 1
7 A10534 Operating handle 1
8 A432428 Deflector clamp screw 2
9 A12507 Decal- chain case 1
10 A20022 Decal- grass box 1
11 A453085K Grass box support rubber 2
12 A03504 Bush- 2
13 A333091 Clutch fork spring 1
14 A2881016 Knob 1
15 A451143 Deflector mount clamp 2
16 A02107 Screw- 1/4" x 1/2" unc.mush.head 2
17 A1213809 Bolt- 5/16" x 1-1/2" unf.HT. 4
18 A02031 Washer- 5/16" shakeproof 4
19 A02007 Nut- 3/8" unc.hex. 2
20 A02100 Bolt- 3/8" x 1-1/4" unc.hex. 2
21 A02033 Washer- 3/8" x 3/4" x 16g.flat 2
22 A02034 Washer- 3/8" shakeproof 2
23 A2501116 Avdel 1
24 A2501095 Avdel 2
25 A232116 Nut- 1/4" unf.hex. 1
26 A173016 Setscrew- 1/4" x 1-1/4" unf.HT. 1
27 A02256 Nyloc nut- 5/16" unf. 2
28 A02030 Washer- 5/16" x 5/8" x 16g.flat 2
29 A20040 Clutch cover 1
30 A04088 Speed nut- Bin 045 4
31 A04091 Screw- M5 x 16 Phillips head 4
32 A16370 Label- Blades 1
33 A02216 Washer- 3/16" x 1/2" x 18g.flat 4
34 [deleted at Revision D]
35 [deleted at Revision D]
36 [deleted at Revision D]
37 A16163 Decal - Select Model 1
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Sheet 02 — Handlebars

Rover Scott Bonnar Reel Mower 45 handlebar parts, SPV51 sheet 02
Item Part No. Description Qty
1 A456374 Upper handle bar assembly 1
2 A456366 Lower handle bar assembly 1
3 A453683 Cover plate 1
4 A1851069 Handle grip 2
5 A403010 Clutch lever 1
6 A451240 Clutch wire assembly 1
7 A10016K Throttle control 1
8 A03088 Throttle cable 1
9 A02066 Clutch wire anchor pin 1
10 A2501108 Avdel- 1/4" 2
11 A07822 Cable tie 2
12 A20021 Decal- handle bar cover 1
13 A02118 Clutch pivot pin 1
14 A03518 Spark plug spanner 1
15 A1213809 Bolt- 5/16" x 1-1/2" unf.HT 1
16 A386046 Handle clamp 1
17 A2321182 Nut- 5/16" unf.hex. 1
18 A02220 Nyloc nut- 3/8" unf. 1
19 A1216946 Bolt- 3/8" x 4" unf. HT 1
20 A02231 Bolt- 5/16" x 3/4" cuphead 4
21 A02030 Washer- 5/16" x 5/8" x 18g.flat 4
22 A02031 Washer- 5/16" shakeproof 4
23 A02004 Nut- 5/16" unc.hex. 4
24 A04080 Screw- 3/16" x 5/8" unc.mush head 1
25 A02193 Nyloc nut- 3/16" unc. 1
26 A12737 Decal- Rover 1

Sheet 03 — Cutter system

Rover Scott Bonnar Reel Mower 45 cutter system parts, SPV51 sheet 03
Item Part No. Description Qty
1 A10665 Cutter assembly - 10 blade (Not illustrated) 1
1 A451581 Cutter assembly - 6 blade 1
2 A451530 Outer drum - bushed 2
3 A454109 Ratchet box- bushed 2
4 A591699 Drum shaft dirt sleeve 2
5 A454424 Drum shaft 1
6 A453448 Drum bearing housing- LH 1
7 A454133 Pawl holder 1
8 A333024 Pawl 6
9 A333120 Drum shaft collar 2
10 A3111119 Drum bush 4
11 A1129017 Drum bearing 2
12 A02051 Woodruff key- No.6 3
13 A453464 Spacer ring 1
14 A451426 Cutter bearing housing- LH 1
15 A453456 Drum bearing housing- RH 1
16 A451450 Cutter bearing housing- RH 1
17 A453261 Pivot bolt 2
18 A454379 Sole plate 1
19 A391700 Bottom plate 1
20 A455929 Front roller adj. bracket assembly 1
21 A454301 Front roller shaft assembly 1
22 A454299 Front roller tube 1
23 A454694 Hand nut 1
24 A3521020 Hand nut plug 1
25 A454707 Spring 1
26 A454723 Circlip 1
27 A454678 Front roller adj. screw assembly 1
28 A1128382 Cutter bearing 2
29 A451477 Cutter bearing shield 2
30 A451653 Bearing seal- RH 1
31 A456593 Clamp bolt 2
32 A02031 Washer- 5/16" shakeproof 14
33 A455865 Roller end 2
34 A454715 Retaining washer 1
35 A02030 Washer- 5/16" x 5/8" x 18g.flat 5
36 A1212769 Bolt- 5/16" x 1" unf.HT. 4
37 A2071924 Screw- 5/16" x 1/2" Csk.M/T 6
38 A02077 Setscrew- 1/4" x 1/2" unf.HT. 2
39 A02044 Washer- 1/4" shakeproof 2
40 A02209 Washer- 1/4" x 5/8" x 18g.flat 2
41 A02220 Nyloc nut- 3/8" unf. 1
42 A02060 Nut- 3/8" unf.hex 1
43 A02034 Washer- 3/8" shakeproof 1
44 A2063261 Screw- 1/4" x 1-1/4" cheese head M/T 4
45 A456606 Cutter bearing adj.screw 2
46 A07804 Washer- Special 2
47 A02045 Nyloc nut- 1/4" unf. 2
48 A02082 Setscrew- 5/16" x 3/4" unc.CHCP 3
49 A02004 Nut- 5/16" unc.hex. 2
50 A351102 Thread cutter- 1/4" x 3/4" unc.hex. 6
51 A2321182 Nut- 5/16" unf.hex 14
52 A3182102 Setscrew- 5/16" x 5/8" unf.HT 6
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Sheet 04 — Drive system

Rover Scott Bonnar Reel Mower 45 drive system parts, SPV51 sheet 04
Item Part No. Description Qty
1 A453835 Clutch body- 5/8" dia. 1
1 A455531 Clutch body- 3/4" dia. 1
2 A453851 Clutch outer cone 1
3 A453878 Clutch inner cone 1
4 A453860 Outer cone lining 1
5 A453886 Clutch spring 1
6 A3534016 Thrust race 1
7 A2984308 Cutter chain half link for item 26 1
8 A333112 Thrust pad 1
9 A451645 Bearing housing 1
10 A1122225 Bearing 1
11 A451602 Bearing shield 1
12 A454512 Engine shaft 1
13 A05086 Woodruff key- No:9 1
14 A02051 Woodruff key- No:6 1
15 A453560 Operating lever 1
16 A451215 Inter adjustment bracket assembly 1
17 A09871 Sprocket bearing assembly 1
18 A454643 Small inter sprocket assembly 1
19 A333032 Lining 1
20 A2981385 Roller chain 1
21 A451207 Drum sprocket 1
22 A455750 Chain adj. shield 1
23 A455769 Chain adj. slide 1
24 A451485 Cutter sprocket 1
25 A2984806 Roller chain 1
26 A2981590 Roller chain 1
27 A454774 Large inter sprocket assembly 1
28 A1122422 Large inter sprocket bearing 1
29 A454803 Operating sleeve clutch 1
30 A1811274 Roll pin 1
31 A453843 Clutch body key 1
32 A453990 Motor sprocket- 12 tooth 1
33 A02004 Nut- 5/16" unc.hex 3
34 A02031 Washer- 5/16" shakeproof 3
35 A02231 Bolt- 5/16" x 3/4" unc.cuphead 3
36 A2441244 Nut- 1/2" unf.hex 3
37 A02063 Washer- 1/2" x 1" x 16g.flat 3
38 A1215863 Clutch operating bolt 1
39 A02012 Washer- 5/16" x 7/8" x 18g.flat 3
40 A02045 Nyloc nut- 1/4" unf. 1
41 A02235 Nyloc nut- 1/4" unc. 3
42 A2074302 Screw- 1/4" x 1-3/4" Csk.M/T 3
43 A232116 Nut- 1/4" unf.hex 2
44 A02044 Washer- 1/4" shakeproof 2
45 A318228 Setscrew- 1/4" x 3/4" unf.HT 2
46 A02082 Setscrew- 5/16" x 3/4" unc CHCP. 2
47 A143503 Washer 1
48 A451311 Clutch outer cone assembly 1
49 A453834 Clutch assy.- Ø5/8″ includes items 1, 3, 5, 41, 42, 48 1
50 A10776 Clutch assy.- Ø3/4″ includes items 1, 3, 5, 41, 42, 48 1

Taken from the Rover spare parts list SPV51 (© 12/2003). The part numbers above come from the PDF’s own text layer rather than from reading a scan, so they match the source exactly.

Revision D (20/12/2005) deleted three items from the chassis sheet: 34 (screw, 10-32 x 3/8″ pan type 23, A04126), 35 (heatshield, A20043) and 36 (Briggs & Stratton muffler screw). The original pre-revision sheet is still reproduced as pages 1–2 in the viewer above, so those numbers are recoverable if you are working on an earlier machine.