Replacement Part List
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 51978
3
2
6
1
5
7
8
9
10
11
12
13
14
10
15
16
17
4
FIGURE A
KEY PART
NO. NUMBER DESCRIPTION QTY
1 518019002 Hanger Cap .............................................................................................. 1
2 940657165 Warning Label ........................................................................................... 1
3 308035059 Straight Shaft Assembly (Inc. Key Nos. 1-2) ............................................ 1
4 308473004 Grass Deflector Assembly ........................................................................ 1
5 660736001 Screw (10-24 x 5/8 in., Hex Washer Hd.) ................................................ 1
6 660642001 Screw (1/4-20 x 1-1/4 in.) ........................................................................ 1
7 308210008 Gear Head Assembly ................................................................................ 1
8 678011001 Flanged Washer ........................................................................................ 1
9 678019004 Trimmer Head Shaft Adaptor ....................................................................1
10 518800005 Stringhead Housing .................................................................................. 1
11 678749001 Compression Spring .................................................................................1
12 308924002 Spool ........................................................................................................1
13 660649001 Bolt (5/16-18 x 1/2 in., L.H.) ..................................................................... 1
14 518803003 Bump Knob .............................................................................................. 1
15 308923015 Trimmer Head Assembly (Inc. Key Nos. 10-14) (.095) ..............................1
16 660738002 Screw (1/4-20 x 1-1/4 in., Hex Washer Hd.) ............................................. 1
17 940865002 Grass Deflector Label ............................................................................... 1