Contents
TORO 21770 Recycler 55cm Lawn Mower
Product Specifications
- Model Number: 21770
- Serial Number: 413000000 and Up
- Manufacturer: Toro
- Origin: USA
Product Usage Instructions
Ordering Replacement Parts
To order replacement parts, please provide the part number, quantity, and description of each desired part.
Understanding Reference Numbers
Each part in the illustration has a reference number that corresponds to the parts list. There are two special reference number formats:
- Service Assembly Reference Numbers: Parts in service assemblies are identified by a:b format where “a” is the assembly reference number and “b” is a unique sequential number for each part within the assembly.
- Reference Numbers Indicating Quantity: In illustrations, if a reference number is in the form nX y, it indicates that there are n parts of reference number y.
Example Parts List
| Ref. | Part Number | Qty. | Description |
|---|---|---|---|
| 1 | 144-3191 | 1 | Housing ASM |
Frequently Asked Questions (FAQ)
Q: How can I obtain parts not serviced separately?
A: Parts not serviced separately can be obtained from www.briggsandstratton.com.
Q: What do I do if I need assistance with my Toro product?
A: For further assistance, please contact us at www.Toro.com or visit our physical address at 8111 Lyndale Avenue South Bloomington, MN 55420.
Ordering Replacement Parts
- To order replacement parts, please supply the part number, the quantity, and the description of each part desired.
Understanding Reference Numbers
- Each identified part in an illustration has a reference number. The reference number for a part also appears in the parts list, along with other information about the part.
- This catalog uses two special reference number formats, one to indicate parts in a service assembly and another to indicate the quantity of a given part in an illustration.
Service Assembly Reference Numbers
- Parts in service assemblies have reference numbers in the form a:b. The a represents the reference number of the entire service assembly and the b represents a sequential number unique to each part within the service assembly.
- 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 illustrations and parts lists.
Reference Numbers Indicating Quantity
- In an illustration, if a reference number indicates more than one part, the reference number has the form nX y. The n represents the quantity of the part, the X is the multiplication symbol, and the y represents the reference number.
- For example, in an illustration, the reference number 2X 37 means that two of the parts identified by reference number 37 are indicated.
Assembly Instruction
Frame Assembly
| Ref. | Part Number | Qty. | Description | Ref. | Part Number | Qty. | Description | |
| 1 | 144-3191 | 1 | Housing ASM | 22:2 | 131-4514 | 1 | Decal-Warning | |
| 2 | 115-4667-01 | 1 | Baffle-Front | 23 | 140-4197 | 1 | Spring-Torsion | |
| 20 | 140-3906 | 1 | Baffle-Rear, Fwd | 24 | 140-4198 | 1 | Spring-Torsion | |
| 21 | 117-5991 | 2 | Washer-Stepped, Baffle | 30 | 139-5457 | 1 | Bumper-Front | |
| 22 | 136-7003 | 1 | Rear Deflector ASM | 31 | 139-5467 | 3 | Screw-Plastic, HWH |
Grass Bag Assembly
Ref. Part Number Qty. Description
- 1 140-3931-03 1 Bag Frame ASM (Welded)
- 3 161-3149 1 Bag-Grass, ASM
Deck Decal Assembly
Ref. Part Number Qty. Description
- 10 140-4183 1 Decal
- 11 140-4184 2 Decal
Engine and Blade Assembly
| Ref. | Part Number | Qty. | Description | Ref. | Part Number | Qty. | Description |
| 4 | 1 | Engine-Briggs,104M020130F1 | 22 | 108-3766-03 | 1 | Support-Blade | |
| ● ■ | 24 | 125-2466 | 1 | Bolt-Blade | |||
| 10 | 95-1726 | 3 | Screw-Taptite | 33 | 147-8650 | 1 | Decal-Shroud |
| 13 | 140-3975 | 1 | Driver-Blade | 34 | 133-8198 | 1 | Decal-Level, Fuel |
| 21 | 131-9683-03 | 1 | Blade | 36 | 2210-316 | 1 | Stop-Rope |
- Not serviced separately
- Obtain parts from www.briggsandstratton.com
Front Wheel and Height-of-Cut Assembly
| Ref. | Part Number | Qty. | Description | Ref. | Part Number | Qty. | Description | |
| 1 | 115-1956-05 | 2 | Plate-HOC, Front Fsvq | 17 | 145-3863 | 1 | Spring-Extension | |
| 2 | 137-3052 | 4 | Screw-HH | 18 | 140-2364 | 2 | ASM-Cover, Wheel (Dk | |
| 3 | 119-4038 | 4 | Nut-Hex | Gray) | ||||
| 4 | 105-1809 | 2 | Arm-Spring | 18:2 | 614426 | 1 | Washer-Stepped | |
| 5 | 105-3042 | 2 | Knob-Lever, HOC | 19 | 140-2358 | 2 | ASM-8″ Wheel, Fwd | |
| 6 | 137-9128 | 2 | Arm-Pivot, Front | (Bushings) | ||||
| 7 | 104-8699 | 2 | Bearing-Ball | 20 | 614650 | 2 | Bolt-Shoulder | |
| 8 | 131-0836 | 2 | Retainer-Bearing, HOC | 21 | 144-0215 | 1 | ASM-Intake, Fwd | |
| 9 | 32151-36 | 2 | Ring-Retaining | 23 | 140-2389 | 1 | Cover-Belt, Lower (Awd) | |
| 10 | 139-6562 | 1 | Transmission-Fwd | 24 | 140-4038 | 2 | Screw-Shoulder, HWH | |
| 11 | 117-1018 | 1 | V-Belt | 25 | 144-6371 | 1 | Pad-Stop | |
| 12 | 144-6392 | 1 | Tab-Mount, Cable | 26 | 140-4036 | 1 | Screw-Plastic, PH | |
| 14 | 110-7191 | 2 | Washer-Thrust | 27 | 145-1488 | 1 | Decal-Vortex Awd | |
| 15 | 131-0896 | 2 | Gear-Pinion, 13T | 28 | 130-2369 | 1 | Pin-Snap | |
| 16 | 32151-61 | 1 | Ring-Retaining |
Rear Wheel and Height-of-Cut Assembly
| Ref. | Part Number | Qty. | Description | Ref. | Part Number | Qty. | Description | |
| 1 | 140-3910-05 | 1 | Plate-HOC, Fwd LH [blk-Txt] | 10 | 131-0895 | 2 | Bushing-Mount, HOC | |
| 2 | 140-3911-05 | 1 | Plate-HOC, Fwd RH | 11 | 120-2779 | 2 | Screw-HH | |
| [blk-Txt] | 12 | 139-1704 | 2 | Washer-Flat | ||||
| 3 | 139-1716 | 2 | Screw-HH | 14 | 614650 | 2 | Bolt-Shoulder | |
| 4 | 119-4038 | 4 | Nut-Hex | 15 | 140-2351 | 2 | ASM-9.65″ Wheel, Bushings | |
| 7 | 115-2899 | 2 | Arm-Spring, Rear | 17 | 139-5449 | 2 | Washer-Wheel Bolt | |
| 8 | 105-3042 | 2 | Knob-Lever, HOC | 18 | 144-6431 | 1 | Shield-Trailing | |
| 9 | 140-3878 | 2 | Arm-Pivot, Rear | 19 | 139-1692 | 2 | Screw-PTH |
Handle Assembly
| Ref. | Part Number | Qty. | Description | Ref. | Part Number | Qty. | Description | |
| 5 | 144-6516-05 | 1 | Handle-Curved | 14 | 144-0221 | 1 | Screw-CARR | |
| 6 | 139-6588 | 2 | Bolt-Shoulder, Handle | 15 | 140-3948 | 1 | Cable-Brake, Fwd | |
| 7 | 119-4038 | 2 | Nut-Hex | 16 | 140-3947 | 1 | Cable-Traction, Fwd | |
| 9 | 117-5976 | 2 | Knob-Handle | 17 | 136-9075 | 1 | Washer-Curved | |
| 10 | 614249 | 1 | Tie-Cable | 18 | 137-3094 | 2 | Nut-Hex | |
| 12 | 138-3249 | 2 | Quick Release ASM | 19 | 140-3918-03 | 1 | Bail-Brake | |
| 12:1 | 140-4157 | 1 | Nut-Push | 20 | 140-3879 | 1 | Cover-Bail | |
| 12:2 | 138-3248 | 1 | Lever-Release | 21 | 140-4024-03 | 1 | Bail-Traction | |
| 12:3 | 138-3253 | 1 | Anchor-Spring | 22 | 86-9671 | 1 | Guide-Rope | |
| 12:4 | 115-2858 | 1 | Spring-Compression | 24 | 114-7988 | 1 | Guide-Cable | |
| 12:5 | 140-4158 | 1 | Rod-Release | 28 | 137-9137 | 2 | Screw-PPH | |
| 13 | 140-2369 | 2 | Pad-Smart Stow |
Attachments and Accessories
For 21770 Recycler S55OST 55cm Lawn Mower with SmartStow
Product Name Model/Part
- Fuel Stabilizer .05 oz .………………………………………………………………………………………………………. 130-2393
- Briggs Maint Kit.………………………………………………………………………………………………………………. 130-8148
- 4-Cycle Fuel, Snow And Lawn 32oz Can …………………………………………………………………………….. 131-3823
- Toro Premium Fuel Treatment 12oz Bottle..…………………………………………………………………………. 131-6572
- Oil-30/10W-30 Synthetic (Quart)….…………………………………………………………………………………….. 138-6053
- SD Chute ASM ……………………………………………………………………………………………………………….. 145-1538
- Lawn Striping Kit with 22in Roller……………………………………………………………………………………………. 20601
- Toro 4-Cycle SAE 30 Oil (32oz Bottle) ..…………………………………………………………………………………… 38903
- Summer Oil-Case of 24 (20oz Bottles)….…………………………………………………………………………………. 38916
- Smart Stow Walk Power Mower Cover ..……………………………………………………………………………… 490-2012
- Bag-Walk Behind (Toro)……..…………………………………………………………………………………………….. 490-7318
- Register at www.Toro.com.