Form No. 3422-421 Rev. A
17 in. Gas Trimmer - Curved Shaft
Item No. 51958—318000001 & Up
Manufacturing No.—090309034
Parts Catalog
Ordering Replacement Parts
To order replacement parts, please supply:
the part number, the quantity, and the
description of each part.
Understanding Reference Numbers
Each identified part in an illustration has a
reference number. The reference number
for a part also appears in the list,
along with other information about the
part.
Understanding Figure Numbers
This catalog uses two special reference
number formats, one to indicate parts in a
service assembly and another to indicate a
Figure Number.
Figure Numbers are represented as a SubAssembly which follow the exploded
views.
Sub-Assemblies can be ordered as an
Assembly or you may order any part indi–
vidually.
© The Toro Company - 2017
All Rights Reserved
TORO STRING TRIMMER – MODEL NUMBER 51958
FIGURE A
1
14
2
3
4
5
13
7
12
8
9
KEY PART
NO. NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
11
6
10
DESCRIPTION
QTY
940657165Warning Label...........................................................................................1
308841018
Curved Shaft Assembly (Inc. Key Nos. 1, 3-4 and 14).............................1
638001001 Clamp........................................................................................................1
660647001 Screw (#10-32 x 3/8 in., Hex Washer Hd.)................................................1
522702001 Grass Shield..............................................................................................1
308827003
Stringhead Housing..................................................................................1
678749001 Compression Spring.................................................................................1
308924001 Spool.........................................................................................................1
660650001 Bolt (5/16-18 x 1/2 in.)...............................................................................1
518803003 Bump Knob...............................................................................................1
309034006 Trimmer Head Assembly (.095) (Inc. Key Nos. 6-10)................................1
205012001 Fastener Parts Kit......................................................................................1
308052010 Guard (Inc. Key No. 12).............................................................................1
518019002 Hanger Cap...............................................................................................1
To locate a source for replacement parts,
contact us toll free at 1-866-574-9242 (US) or 1-866-574-9243 (Canada).
2
TORO STRING TRIMMER – MODEL NUMBER 51958
FIGURE B
13
14
12
10
11
6
9
8
15
16
7
17
4
20
18
5
3
21
24
22
1
25
19
23
5
26
27
2
KEY PART
NO. NUMBER
1 308159025
2 308045014
3 940657164
4 638431001
5 308869003
6 660563002
7 518696017
8 518210004
9 T660697001
10 570234016
11 660925011
12
N/A
13 638133001
14 660734001
15 678029002
DESCRIPTION
KEY PART
NO. NUMBER
QTY
Upper Boom Assembly
(Inc. Key Nos. 2-3).........................1
Boom Clamp Assembly.................1
Warning Label...............................1
Shoulder Strap Clip.......................1
Control Handle Assembly..............1
Screw
(M4 x 20 mm, T20 Torx Hd.)..........4
Trigger............................................1
Corrugated Tube...........................1
Screw (M6 x 30 mm).....................1
Rear Handle Grip...........................1
Screw
(M4 x 8 mm, T20 Torx Hd.)............1
Powerhead Assembly....................1
Throttle Cable Clamp....................1
Screw (M4 x 16 mm).....................1
Hex Nut (M6.3 x 1).........................1
16 690140011
17 518695017
18 760961005
19 690694002
20 308863029
21 308225011
22 940864003
23 308056009
24 526760001
25 660857001
26 639167001
27 518949001
Not Shown:
120900107
000998216
991000428
DESCRIPTION
Compression Spring......................1
Trigger Lock...................................1
On/Stop Switch.............................1
Throttle Cable Spring....................1
Lead Assembly..............................1
Throttle Cable................................1
On/Stop Label...............................1
Front Handle Assembly
(Inc. Key Nos. 24-27).....................1
Front Handle w/Grip......................1
Screw (1/4-20 x 1 in., Sq. Hd.)......1
Front Handle Clamp......................1
Wing Nut (1/4-20)..........................1
High Altitude Kit (Walbro)
Spark Arrestor Kit
Operator’s Manual
To locate a source for replacement parts,
contact us toll free at 1-866-574-9242 (US) or 1-866-574-9243 (Canada).
3
QTY
4
15
16
FIGURE C
12
14
2
13
1
17
18
20
4
11**
3
5
10
21
19
25
22
7
23
8
54
6
53
9
29
34**
28**
27
25
31
40
38
39
36**
35
29
30
24
37
42**
33
41
48
26
32
TORO STRING TRIMMER – ITEM NUMBER 51958
44
1
45
49
46
50
47
43
51
52
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
DESCRIPTION
QTY
DESCRIPTION
QTY
* Standard Hardware Item – May Be Purchased Locally
**Non-Reuseable Parts To locate a source for replacement parts, contact us toll free at 1-866-574-9242 (US) or 1-866-574-9243 (Canada).
29 660466001 Screw (M4 x 18 mm, T20 Torx Pan Hd. S.T.)..................4
30 591644001 Rear Engine Housing.......................................................1
31 310976001 Fuel Filter.........................................................................1
32 940865001 Logo Label (Rear)............................................................1
33 308430016 Starter Recoil & Starter Cup
Assembly (Inc. Key No. 32).............................................1
34 900711014 ** Insulator Gasket..............................................................1
35 518329001 Heat Dam Insulator.........................................................1
36 901697001 ** Gasket.............................................................................1
37 662210003 Screw w/Washers (M5 x 34 mm, T25 Torx Pan Hd.).......2
38 690700001 Hose Clip.........................................................................1
39 570373002 Fuel Line (45 mm)............................................................1
40 690699001 Hose Clip.........................................................................1
41 308480001 Carburetor Assembly......................................................1
42 900711003 ** Carburetor Gasket...........................................................1
43 308478004 Airbox Base Assembly (Inc. Key Nos. 44-48).................1
44 590458001 Choke Lever....................................................................1
45 518130001 Airbox Base.....................................................................1
46 590946001 Choke Plate.....................................................................1
47 660345001 Screw (M4 x 12 mm, T20 Torx Pan Hd. S.T.)..................1
48 300780002 Primer Assembly.............................................................1
49 660346001 Screw (M5 x 60 mm, T25 Torx Cap Soc. Hd.).................2
50 560873001 Air Filter...........................................................................1
51 308890002 Airbox Cover Assembly w/Label (Inc. Key No. 52).........1
52 940686148 Starting Instructions Label..............................................1
53 308675063 Fuel Tank & Cap Assembly
(Inc. Key Nos. 24, 26, 54-55)...........................................1
54 940654088 Combustion Warning Label.............................................1
KEY PART
NO. NUMBER
PARTS LIST
TORO STRING TRIMMER – ITEM NUMBER 51958
660344001 Screw (M5 x 20 mm, T20 Torx Pan Hd.).........................8
300754031 Front Housing Assembly.................................................1
660353001 Clutch Shoulder Bolt (M6 x 22.5 mm, Hex Hd.)..............2
690696001 Curved Washer................................................................2
307091001 Clutch Assembly.............................................................1
690695001 Washer (ID6 x OD15 x 1.2t).............................................2
690689001 Flywheel Nut....................................................................1
640574002 Flywheel..........................................................................1
300749010 Crankcase Assembly.......................................................1
690688001 Woodruff Key (10 mm x 3 mm)........................................1
630002032 ** Muffler Gasket.................................................................1
300748021 Muffler Assembly (Inc. Key Nos. 13-14 and 58)..............1
638268001 Screen.............................................................................1
660870001 Screw (6-20 x 1/4 in., T20 Torx Pan Hd. S.T.).................3
638027002 Heat Shield......................................................................1
660347001 Screw (M5 x 50 mm, T25 Torx Soc. Hd.)........................2
660968004 Screw (M4 x 22 mm, T20 Torx Soc. Hd.)........................2
290143002 Lead Wire (Red) ..............................................................1
290178024 Coil Boot Assembly.........................................................1
290143001 Lead Wire (Black)............................................................1
690969001 Washer (ID4.2 x OD10 x1t)..............................................2
590462001 Spacer (Phenolic)............................................................2
870170001 * Spark Plug (Champion RCJ4).........................................1
660354001 Screw (M5 x 16 mm, T25 Torx Soc. Hd.)........................3
660342001 Screw (M5 x 22 mm, T25 Torx Soc. Hd.)........................2
310816020 Fuel Cap Assembly.........................................................1
642368001 Cylinder...........................................................................1
900709007 ** Gasket.............................................................................1
KEY PART
NO. NUMBER
FIGURE C
This product is assembled under license from The Toro Company
by Techtronic Industries North America, Inc.
Techtronic Industries Power Equipment
P.O. Box 1427
Anderson, SC 29622
USA
Customer Service Information
If your product requires service or maintenance,
contact your nearest authorized service dealer.
To locate your nearest authorized service dealer for this product,
contact us toll free at 1-866-574-9242 (US) or 1-866-574-9243 (Canada).
995000272
4-30-18 (Rev:01)
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