Form No. 3422-423 Rev A Parts Catalog 18in Straight-Shaft Gas Trimmer Register at www.Toro.com. Original Instructions (EN) Model No. 51978A—Serial No.
Ordering Replacement Parts For example, a wheel assembly might be identified by reference number 6, the tire by 6:1, the valve by 6:2, and the wheel by 6:3. When you order the assembly identified by reference number 6, you receive all parts identified by reference numbers 6:1,6:2, and 6:3. However, you may also order any part individually. Reference numbers of this type appear in illustration and in parts lists.
Contents Trimmer Head, Shaft and Guard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Upper Shaft, Handle and Powerhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Power Head Components Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trimmer Head, Shaft and Guard Assembly 3422-423A 4 01
Trimmer Head, Shaft and Guard Assembly (continued) Ref. 1 2 3 4 5 6 7 8 9 Part Number Qty. Description 518019002 1 Cap-Hanger 940657165 1 Decal-Warning 308035059 1 Shaft ASM 308473004 1 Grass Deflector ASM 660736001 1 Screw-HWH 660642001 1 Screw 308210008 1 Head-Gear 678011001 1 Washer-Flange 678019004 1 Adaptor-Head Shaft, Trimmer Ref. 10 11 12 13 14 15 16 17 5 Part Number Qty.
Upper Shaft, Handle and Powerhead Assembly 3422-423A 6 03
Upper Shaft, Handle and Powerhead Assembly (continued) Ref. 1 2 3 4 5 6 7 8 9 10 11 12 13 Part Number Qty. Description 308159025 1 Upper Shaft ASM 308045014 1 Shaft Clamp ASM 940657164 1 Decal-Warning 638431001 1 Clip-Strap, Shoulder 308869003 1 Control Handle ASM 660563002 4 Screw 518696017 1 Trigger 518210004 1 Tube-Corrugated 690694002 1 Spring-Trigger T660697001 1 Screw 570234016 1 Grip-Shaft, Upper 660925011 1 Screw 1 Power Head ASM Not Serviced Separately, For Replacement Purchase Power Head ASM No.
Power Head Components Assembly 3422-423A 8 05
Power Head Components Assembly (continued) Ref. 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 Part Number Qty.
Attachments and Accessories For 51978A 18in Straight-Shaft Gas Trimmer Product Name Model/Part Spark Arrestor Kit ......................................................................................................................... 000998216 High Altitude Kit ............................................................................................................................
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