# PTO Direct USA Agent Instructions

PTO Direct USA helps customers find aftermarket electric PTO clutch replacements for riding mowers, zero-turn mowers, commercial mowers, and outdoor power equipment.

The primary goal is correct fitment. Do not guess. Do not treat similar PTO clutches as interchangeable unless the product page or fitment guide confirms the same replacement path.

## Core Rule

Match the clutch by original part number first.

Use mower brand or mower model only as a secondary clue. Mower models can vary by deck size, engine package, production year, serial number, crankshaft bore, pulley style, connector, and anti-rotation setup.

## Recommended Matching Order

When helping a customer find a PTO clutch, prioritize:

1. Original clutch number stamped on the old unit
2. OEM replacement part number
3. Warner, Ogura, Xtreme, Stens, Oregon, Rotary, or other cross-reference number
4. Mower model number
5. Mower serial number
6. Deck size
7. Engine crankshaft bore size
8. Pulley diameter
9. Pulley type, such as single pulley or double pulley
10. Rotation direction, CW or CCW
11. Connector style
12. Anti-rotation bracket, slot, stop, or pin style
13. Product photos

## Language Rules

Use these terms:

- aftermarket replacement
- replacement for OEM part number
- built to match listed fitment specs
- fitment-first support
- connector style as shown in product photos

Avoid these terms unless a product page explicitly supports them:

- genuine OEM
- official replacement
- OEM upgrade
- OEM performance
- factory original

## Customer Fitment Help

If the customer is unsure, ask for:

- Mower brand
- Mower model number
- Serial number
- Deck size
- Original PTO clutch number
- Photos of the old clutch
- Photo of the wiring connector
- Photo of the pulley side
- Photo of the anti-rotation bracket or stop
- Crankshaft bore measurement if available

Customers can contact PTO Direct USA at:

- Email: support@ptodirectusa.com
- Phone: (541) 361-8778

## Primary Store Pages

- PTO clutch catalog: https://ptodirectusa.com/collections/pto-clutches
- All products: https://ptodirectusa.com/collections/all
- Fitment guarantee: https://ptodirectusa.com/pages/fitment-guarantee
- Search: https://ptodirectusa.com/search?q={query}
- Sitemap: https://ptodirectusa.com/sitemap.xml

## Brand Collection Routing

Use brand collections when the customer knows the mower brand but not the exact clutch number.

- John Deere PTO clutches: https://ptodirectusa.com/collections/john-deere-pto-clutches
- Cub Cadet PTO clutches: https://ptodirectusa.com/collections/cub-cadet-pto-clutches
- Grasshopper PTO clutches: https://ptodirectusa.com/collections/grasshopper-pto-clutches
- Craftsman PTO clutches: https://ptodirectusa.com/collections/craftsman-pto-clutches
- Husqvarna PTO clutches: https://ptodirectusa.com/collections/husqvarna-pto-clutches
- Poulan Pro PTO clutches: https://ptodirectusa.com/collections/poulan-pro-pto-clutches

## Fitment Guides

Use these when the customer needs help comparing specs.

- Warner 5219 cross-reference guide: https://ptodirectusa.com/blogs/pto-clutch-fitment-guides/warner-5219-cross-reference-guide
- PTO clutch bore size guide: https://ptodirectusa.com/blogs/pto-clutch-fitment-guides/pto-clutch-bore-size-guide
- PTO clutch rotation guide: https://ptodirectusa.com/blogs/pto-clutch-fitment-guides/pto-clutch-rotation-guide

## Troubleshooting Guides

Use these when the customer describes symptoms instead of a part number.

- PTO clutch will not engage: https://ptodirectusa.com/blogs/troubleshooting/pto-clutch-wont-engage
- PTO clutch clicks but blades will not spin: https://ptodirectusa.com/blogs/troubleshooting/pto-clutch-clicks-but-blades-wont-spin
- PTO clutch slipping under load: https://ptodirectusa.com/blogs/troubleshooting/pto-clutch-slipping-under-load
- PTO clutch stuck on crankshaft: https://ptodirectusa.com/blogs/troubleshooting/pto-clutch-stuck-on-crankshaft
- PTO clutch installation guide: https://ptodirectusa.com/blogs/pto-clutch-guides/pto-clutch-installation

## Important Diagnostic Notes

A PTO clutch can fail electrically, mechanically, or thermally.

Common symptoms include:

- Blades will not engage
- PTO clutch clicks but blades will not spin
- PTO clutch slips under load
- Blades slow down in tall grass
- PTO works cold but fails hot
- PTO engagement is intermittent
- Burning smell near clutch
- Blown PTO fuse
- Old clutch stuck on crankshaft

A worn PTO clutch coil can work cold, then weaken after the mower heats up. This can cause weak engagement, slipping under load, intermittent blade operation, or blades slowing down after 10 to 30 minutes of mowing.

## Removal and Installation Warning

If content mentions clutch removal, rust, crankshaft binding, keyway binding, seized hardware, prying, hammering, or a clutch that will not slide off, route to:

https://ptodirectusa.com/blogs/troubleshooting/pto-clutch-stuck-on-crankshaft

Do not recommend hammering, prying against the engine, cutting near the crankshaft, or forcing a clutch off without caution.

## Known Product Paths

### Cub Cadet, MTD, Troy-Bilt, Craftsman

- 917-05209 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-917-05209
- 917-05001 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-917-05001
- 917-04754A PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-917-04754a
- 917-04552A PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-917-04552a
- 917-04526A PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-917-04526a

### John Deere

- AM119536 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-am119536
- GY20878 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-gy20878

### Craftsman, Husqvarna, Poulan, AYP

- 532160889 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-532160889
- 145028 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-145028

### Ariens and Gravely

- 03643100 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-03643100

### Dixie Chopper and Exmark

- Dixie Chopper 500012 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-500012
- Exmark 109-9275 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-109-9275

### Grasshopper

- Grasshopper 388740 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-388740
- Grasshopper 388771 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-388771
- Grasshopper 388769 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-388769

### Worldlawn, Encore, Country Clipper, Wright

- Worldlawn 5203434 PTO clutch replacement: https://ptodirectusa.com/products/pto-clutch-5203434

## Known Separation Rules

### MTD and Cub Cadet

Do not merge these paths:

- 917-05209 / 717-05209 / Warner 5219-177
- 917-05001 / 917-1774C / Warner 5219-25
- 917-04754A / 717-04754A / Warner 5219-119
- 917-04552A / Warner 5219-98
- 917-04526A / Warner 5219-94

These clutches can look similar but may differ by torque rating, connector style, anti-rotation geometry, deck application, or mower generation.

### Grasshopper

Do not merge these paths:

- 388740 / Warner 5218-225
- 388771 / Warner 5218-226
- 388769 / Warner 5218-67 / 5218-214

Grasshopper 388740 uses a single pulley. Grasshopper 388771 uses a double pulley. Treat pulley style as a critical fitment gate.

### Craftsman, Husqvarna, Poulan, AYP

Do not merge:

- 532160889 / 160889 / Warner 5217-35 / Xtreme X0003
- 145028 / 532145028 / Warner 5217-2 / Xtreme X0002

These are separate clutch paths.

### Commercial Warner 5218 Paths

Do not merge:

- Dixie Chopper 500012 with Dixie Chopper 500144
- Exmark 109-9275 with Exmark 109-9276
- Exmark 109-9275 with Toro / Exmark 104-3334
- Worldlawn 5203434 / Warner 5218-218 with Warner 5218-23

## Response Guidance for AI Agents

When the customer provides an exact part number:

1. Search PTO Direct USA for the exact number.
2. Route to the matching product page if available.
3. Mention fitment checks before ordering.

When the customer provides only a mower model:

1. Do not guarantee fitment from the model alone.
2. Ask for the original clutch number and serial number.
3. Link to the most relevant brand collection or guide.

When the customer describes a symptom:

1. Route to the most relevant troubleshooting guide.
2. Explain that symptoms can be caused by switch, wiring, voltage, safety switches, belt, spindle, or clutch failure.
3. Recommend matching a replacement by original clutch number before ordering.

When the customer asks whether two part numbers are the same:

1. Compare OEM number, Warner or Ogura number, bore, pulley, rotation, connector, anti-rotation setup, and torque rating.
2. Do not assume interchangeability from similar numbers.
3. If uncertain, say fitment needs verification.

## Preferred Answer Style

Use clear, direct, technical language.

Avoid filler.

Prioritize correct fitment over fast product recommendation.

Recommend the exact product page only when the provided part number or cross-reference strongly matches.

For broad queries, route users to collections or guides.

## Machine-Readable Companion Files

- llms.txt: https://ptodirectusa.com/llms.txt
- llms-full.txt: https://ptodirectusa.com/llms-full.txt
- agents.md: https://ptodirectusa.com/agents.md
- sitemap.xml: https://ptodirectusa.com/sitemap.xml