John Deere Mower Parts Lookup: S100, E100 and X Series Diagrams
John Deere makes riding mowers and lawn tractors for homeowners and professionals. This guide covers parts diagrams for the popular 100 series and S200 series lawn tractors.
Models Overview
100 Series (Entry Level)
| Model | Deck | Engine | Transmission |
|---|---|---|---|
| E100 | 42” | Briggs 17.5HP | CVT |
| E110 | 42” | Briggs 19HP | CVT |
| E120 | 42” | Briggs 20HP | CVT |
| E130 | 42” | Briggs 22HP | CVT |
| E140 | 48” | Briggs 22HP | CVT |
| E150 | 48” | Briggs 22HP | CVT |
| E160 | 48” | Briggs 24HP | CVT |
| E170 | 48” | Briggs 25HP | CVT |
| E180 | 54” | Briggs 25HP | CVT |
S200 Series (Step-Up)
| Model | Deck | Engine | Transmission |
|---|---|---|---|
| S220 | 42” | Briggs 19HP | Hydro |
| S240 | 42” | Kawasaki 18.5HP | Hydro |
| S260 | 48” | Kawasaki 21.5HP | Hydro |
| S280 | 54” | Kawasaki 24HP | Hydro |
Model Number Location
John Deere model and serial numbers are located:
- Under the seat on the frame
- On a plate near the steering column
- On the engine shroud
100 Series Parts
Model Number Decoder
Example: E130
- E = Economy series
- 1 = 100 series
- 30 = Power level indicator
Common Across 100 Series
All 100 series share many components:
- Same frame design
- Similar belt routing
- Common transmission type
- Interchangeable filters
Belt Routing Diagrams
Drive Belt (Motion)
The drive belt transfers power from the engine to the transmission. If your mower won’t move, see our John Deere troubleshooting guide.
42” Deck Models (E100-E130):
Belt path:
- Engine pulley
- Transmission input pulley
- Tensioner idler
- Return to engine
Belt part number: GX20072
Deck Belt (Blade)
The deck belt spins the cutting blades.
42” Deck:
- Engine PTO pulley
- Left blade spindle
- Idler pulley
- Right blade spindle
- Tensioner
- Return to PTO
Belt part number: GX20072 (deck) or GX21833 (48”)
48” Deck Belt
Belt part number: GX21833
54” Deck Belt: Belt part number: GX21986
Blade and Deck Components
Blade Specifications
| Deck Size | Blade Length | Part Number |
|---|---|---|
| 42” | 21” each | GX22151 |
| 48” | 24” each | M145969 |
| 54” | 18.5” each | M145476 |
Note: 42” and 48” decks use 2 blades. 54” deck uses 3 blades.
Spindle Assembly
| Part | Part Number |
|---|---|
| Spindle assembly | GY20867 |
| Spindle bearing | GX20818 |
| Spindle pulley | GX20367 |
| Blade bolt | 19M7786 |
Deck Shell Parts
| Part | Part Number | Deck Size |
|---|---|---|
| Deck shell 42” | BG20936 | 42” |
| Deck shell 48” | BG20937 | 48” |
| Deck shell 54” | BG20938 | 54” |
| Mulch plug | BM24993 | All |
| Discharge chute | GX22649 | 42”/48” |
Transmission Components
CVT (100 Series)
The 100 series uses a continuously variable transmission (CVT).
| Part | Part Number |
|---|---|
| CVT belt | GX20006 |
| Transmission assembly | Model specific |
| Trans pulley | GX22036 |
Hydrostatic (S200 Series)
S200 series uses hydrostatic drive for better control.
| Part | Part Number |
|---|---|
| Hydraulic fluid | TY22035 |
| Trans filter | AM131054 |
| Drive belt | Model specific |
Engine Parts
Briggs Engines (Most Models)
| Part | Part Number |
|---|---|
| Air filter | GY20575 |
| Oil filter | AM125424 |
| Spark plug | M78543 |
| Fuel filter | AM116304 |
Kawasaki Engines (S240+)
| Part | Part Number |
|---|---|
| Air filter | MIU14395 |
| Oil filter | AM125424 |
| Spark plug | M78543 |
| Fuel filter | AM116304 |
Maintenance Schedule
| Service | Interval |
|---|---|
| Oil change | 50 hours |
| Air filter | 100 hours |
| Spark plug | 100 hours |
| Fuel filter | 200 hours |
| Transmission service | 200 hours |
Common Part Numbers
42” Deck Quick Reference
| Part | Part Number |
|---|---|
| Deck belt | GX20072 |
| Drive belt | GX20006 |
| Blades (2) | GX22151 |
| Spindle | GY20867 |
| Air filter | GY20575 |
| Oil filter | AM125424 |
48” Deck Quick Reference
| Part | Part Number |
|---|---|
| Deck belt | GX21833 |
| Drive belt | GX20006 |
| Blades (2) | M145969 |
| Spindle | GY20867 |
| Air filter | GY20575 |
| Oil filter | AM125424 |
Wear Items
| Part | Part Number | Life |
|---|---|---|
| Blades | Model specific | 1-2 seasons |
| Deck belt | Model specific | 2-3 seasons |
| Air filter | GY20575 | 1 season |
| Spark plug | M78543 | 1-2 seasons |
Parts Lookup Resources
Official John Deere
Website: partscatalog.deere.com
Enter model number for:
- Exploded parts diagrams
- Part numbers
- Direct ordering
Aftermarket Options
Quality aftermarket parts available from:
- Oregon
- Stens
- Rotary
- Arnold
Parts OK to buy aftermarket:
- Blades
- Belts
- Filters
- Idler pulleys
Buy OEM:
- Spindles
- Transmission parts
- Electrical components
Troubleshooting Tips
Won’t Move
- Check drive belt
- Verify transmission engagement
- Check bypass valve (hydro models)
- Test transmission pulley
Blades Won’t Engage
- Check PTO switch
- Inspect deck belt
- Verify spindle rotation
- Check safety switches
Uneven Cut
- Check blade condition
- Level deck (front to back and side to side)
- Verify tire pressure
- Inspect spindles for play
Related Guides
- John Deere Mower Problems
- John Deere S100 Problems
- Lawn Mower Blade Sharpening
- Fix John Deere Lawn Mower
Summary
John Deere lawn tractors use quality components with good parts availability. The 100 series shares many parts across models making repairs straightforward. Use the official John Deere parts catalog for accurate diagrams and part numbers specific to your serial number range.