Parts Catalog

Ordering Replacement PartsTo 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.

17 in. Gas Trimmer - Curved Shaft Item No. 51958—314000001 & Up

Manufacturing No.—090309022

Form No. 3378-722 Rev. A

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 Sub-Assembly which follow the exploded views.

Sub-Assemblies can be ordered as an Assembly or you may order any part indi–vidually.

© The Toro Company - 2016All Rights Reserved

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

2

3

4

5

6

7

910

6

11

12

13

1

14

8

FIGURE A

KEY PART NO. NUMBER DESCRIPTION QTY

1 940657032 Warning Label ...........................................................................................1 2 308841018 Curved Shaft Assembly (Inc. Key Nos. 1, 3-4 and 14) .............................1 3 638001001 Clamp .......................................................................................................1 4 660647001 Screw (#10-32 x 3/8 in., Hex Washer Hd.) ...............................................1 5 522702001 Grass Shield .............................................................................................1 6 308827003 Stringhead Housing ..................................................................................1 7 678749001 Compression Spring .................................................................................1 8 308924002 Spool ........................................................................................................1 9 660650001 Bolt (5/16-18 x 1/2 in.) ..............................................................................1 10 518803003 Bump Knob ..............................................................................................1 11 309034001 Trimmer Head Assembly (.095) (Inc. Key Nos. 6-10) ................................1 12 120650007 Fastener Parts Kit .....................................................................................1 13 308052010 Guard (Inc. Key No. 12) ............................................................................1 14 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).

3

TORO STRING TRIMMER – MODEL NUMBER 51958FIGURE B

1 308159025 Upper Boom Assembly (Inc. Key Nos. 2-3) ........................1

2 308045014 Boom Clamp Assembly ................1

3 940657034 Warning Label ..............................1

4 638431001 Shoulder Strap Clip ......................1

5 308869003 Control Handle Assembly .............1

6 660563002 Screw (M4 x 20 mm, T20 Torx Hd.) .........4

7 518696017 Trigger ...........................................1

8 518210004 Corrugated Tube ..........................1

9 T660697001 Screw (M6 x 30 mm) ....................1

10 570234009 Rear Handle Grip ..........................1

11 660925011 Screw (M4 x 8 mm, T20 Torx Hd.) ...........1

12 N/A Powerhead Assembly ...................1

13 638133001 Throttle Cable Clamp ...................1

14 660734001 Screw (M4 x 16 mm) ....................1

15 678029002 Hex Nut (M6.3 x 1) ........................1

16 678906001 Compression Spring .....................1

17 518695017 Trigger Lock ..................................1

18 760961005 On/Stop Switch ............................1

19 690694002 Throttle Cable Spring ...................1

20 308863029 Lead Assembly .............................1

21 308225011 Throttle Cable ...............................1

22 940864003 On/Stop Label ..............................1

23 308056009 Front Handle Assembly

(Inc. Key Nos. 24-27) ....................1

24 526760001 Front Handle w/Grip .....................1

25 660857001 Screw (1/4-20 x 1 in., Sq. Hd.) .....1

26 639167001 Front Handle Clamp .....................1

27 518949001 Wing Nut (1/4-20) .........................1

Not Shown: 120900107 High Altitude Kit (Walbro)

000998216 Spark Arrestor Kit

991000428 Operator’s Manual

KEY PART NO. NUMBER DESCRIPTION QTY

KEY PART NO. NUMBER DESCRIPTION QTY

5

5

1

3

4

6

15

27

26

2422

20

9

11

716

18

17

21

2523

10

19

8

12

13

14

2

4

TORO STRING TRIMMER – ITEM NUMBER 51958

FIGURE C

16

15

25 25

27

28**

30

29

29

34**

35

36**

31

37 41

38

3940

42**

4445

46

48

43

47

53

3

4

57

6

10

20

1819

22

52

3221

17

2

1

8

26

55

49

50

51

12

23

11**9

33

54

13

14

24

5

TORO STRING TRIMMER – ITEM NUMBER 51958

* 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).

PARTS LIST

KEY PART NO. NUMBER DESCRIPTION QTY

KEY PART NO. NUMBER DESCRIPTION QTY

1 660344001 Screw (M5 x 20 mm, T20 Torx Pan Hd.).........................4

2 300754031 Front Housing Assembly ................................................1

3 660353001 Clutch Shoulder Bolt (M6 x 22.5 mm, Hex Hd.) .............2

4 690696001 Curved Washer ...............................................................2

5 307091001 Clutch Assembly ............................................................1

6 690695001 Washer (ID6 x OD15 x 1.2t) ............................................2

7 690689001 Flywheel Nut ...................................................................1

8 640574002 Flywheel .........................................................................1

9 300749010 Crankcase Assembly ......................................................1

10 690688001 Woodruff Key (10 mm x 3 mm) .......................................1

11 630002032 ** Muffler Gasket ................................................................1

12 300748021 Muffler Assembly (Inc. Key Nos. 13-14 and 58) .............1

13 638268001 Screen ............................................................................1

14 660870001 Screw (6-20 x 1/4 in., T20 Torx Pan Hd. S.T.) ................3

15 638027002 Heat Shield .....................................................................1

16 660347001 Screw (M5 x 50 mm, T25 Torx Soc. Hd.) .......................2

17 660968001 Screw (M4 x 19 mm, T20 Torx Soc. Hd.) .......................2

18 290143002 Lead Wire (Red) .............................................................1

19 290178024 Coil Boot Assembly ........................................................1

20 290143001 Lead Wire (Black) ...........................................................1

21 690969001 Washer (ID4.2 x OD10 x1t) .............................................2

22 590462001 Spacer (Phenolic) ...........................................................2

23 870170001 * Spark Plug (Champion RCJ4) ........................................1

24 660354001 Screw (M5 x 16 mm, T25 Torx Soc. Hd.) .......................3

25 660968001 Screw (M5 x 22 mm, T25 Torx Soc. Hd.) .......................2

26 310816020 Fuel Cap Assembly ........................................................1

27 642368001 Cylinder ..........................................................................1

28 900709007 ** Gasket ............................................................................1

29 660563001 Screw (M4 x 18 mm, T20 Torx Pan Hd. S.T.)..................4

30 591644001 Rear Engine Housing ......................................................1

31 660351001 Screw w/Washer (M5 x 16 mm, T25 Torx Soc. Hd.) ......4

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

55 310976001 Fuel Filter ........................................................................1

FIGURE C

Techtronic Industries North America, Inc.P.O. Box 35 Highway 8

Pickens, SC 29671

1-866-574-9242 (US) or 1-866-574-9243 (Canada)

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).

9910009776-29-16 (Rev:01)

This product is assembled by Techtronic Industries North America, Inc.under license from the Toro Company