1. Introduction
This manual provides essential information for the installation, maintenance, and troubleshooting of the Deck Rebuild Kit for Poulan Pro 42" Lawn Tractors. This kit is designed to replace key components of your mower deck, ensuring optimal performance and longevity. Please read this manual thoroughly before beginning any work.
2. Product Overview
This kit is compatible with Poulan Pro 42" Lawn Tractor models PR1842STA, PR1842STB, PR1842STC, and PR1842STD. It includes the following components:
- (1) Idler Pulley - Replaces Poulan Pro Part No. 173438
- (1) Idler Pulley - Replaces Poulan Pro Part No. 173437
- (2) 21" Mulching Blades - Replaces Poulan Pro Part No. 134149
- (2) Complete Spindle Assemblies - Replaces Poulan Pro Part No. 130794
- (1) Deck Belt - Replaces Poulan Pro Part No. 144959
Figure 2.1: Overview of the complete deck rebuild kit, including two mulching blades, a deck belt, two spindle assemblies, and two idler pulleys.
Figure 2.2: A detailed view of one of the complete spindle assemblies included in the kit, featuring the shaft, housing, and mounting points.
Figure 2.3: A single 21-inch mulching blade, designed for efficient grass cutting and mulching, showing its star-shaped mounting hole.
The product also includes access to two e-books: "Professional Lawn Care For Your Home…By You" and "Mowing and Trimming Safety." These resources provide additional guidance on lawn care and safe operation practices.
Figure 2.4: Covers of the two supplementary e-books provided with the kit, offering guidance on lawn care and safety.
3. Safety Information
Always prioritize safety when working with lawn mower components. Failure to follow safety instructions can result in serious injury or damage to equipment.
- Disconnect Spark Plug: Before performing any maintenance or installation, always disconnect the spark plug wire to prevent accidental engine starting.
- Wear Protective Gear: Use heavy-duty gloves to protect hands from sharp blades and other components. Wear safety glasses to protect eyes.
- Secure the Mower: Ensure the lawn tractor is on a flat, stable surface and properly supported (e.g., with jack stands) if lifting the deck.
- Read Tractor Manual: Refer to your specific Poulan Pro lawn tractor's owner's manual for detailed safety procedures and deck removal/installation instructions.
- Sharp Blades: Blades are extremely sharp. Handle with extreme care.
- Correct Parts: Ensure all replacement parts are correct for your specific model to maintain safe operation.
4. Installation and Setup
The following are general steps for replacing deck components. Specific procedures may vary by tractor model. Always consult your Poulan Pro lawn tractor's service manual for precise instructions.
- Prepare the Tractor: Park the tractor on a level surface, engage the parking brake, disengage the PTO, turn off the engine, and remove the ignition key. Disconnect the spark plug wire.
- Remove Mower Deck: Follow your tractor's manual to safely detach and remove the mower deck from the tractor. This typically involves disconnecting the PTO belt, lift links, and anti-sway bars.
- Inspect Existing Components: Before removal, note the orientation and routing of the belt and position of pulleys and spindles. Take photos if necessary.
- Replace Blades:
- Securely block the blade from turning.
- Remove the blade retaining nut and washer.
- Install the new 21" mulching blade, ensuring the cutting edge faces upwards towards the deck. Tighten the retaining nut to the manufacturer's specified torque.
- Replace Spindle Assemblies:
- Remove the bolts securing the old spindle assembly to the deck.
- Carefully lift out the old spindle.
- Position the new spindle assembly, ensuring the mounting holes align.
- Secure with new or existing bolts, tightening evenly and to specification.
- Replace Idler Pulleys:
- Remove the bolt or nut securing the old idler pulley.
- Install the new idler pulley, ensuring any spacers or washers are correctly positioned.
- Tighten the fastener securely.
- Install New Deck Belt:
- Route the new deck belt around all pulleys (spindle pulleys, idler pulleys, and engine pulley if applicable) according to the diagram in your tractor's manual.
- Ensure the belt is seated correctly in all pulley grooves and is not twisted.
- Reattach Mower Deck: Reinstall the mower deck onto the tractor, reversing the removal steps. Ensure all connections (PTO belt, lift links, anti-sway bars) are secure.
- Test Operation: Reconnect the spark plug wire. Start the engine and engage the PTO at a low setting to ensure the deck operates smoothly and quietly. Check for any unusual vibrations or noises.
If you are unsure about any step, it is recommended to seek assistance from a qualified service technician.
5. Maintenance
Regular maintenance of your mower deck components will extend their lifespan and ensure consistent cutting performance.
- Clean Deck Regularly: After each use, clean grass clippings and debris from the underside of the mower deck. This prevents buildup that can hinder blade performance and promote rust.
- Inspect Blades: Periodically check blades for sharpness, balance, and damage. Sharpen or replace blades as needed.
- Check Belt Tension and Condition: Inspect the deck belt for cracks, fraying, or excessive wear. Ensure it has proper tension. Replace if damaged.
- Examine Pulleys and Spindles: Check pulleys for smooth rotation and ensure spindle assemblies are free from excessive play or noise. Lubricate grease fittings on spindles if present and recommended by your tractor's manual.
- Tighten Fasteners: Regularly check and tighten all nuts and bolts on the mower deck, especially those securing blades and spindles.
6. Troubleshooting
This section addresses common issues related to the mower deck components.
| Problem | Possible Cause | Solution |
|---|---|---|
| Uneven Cut | Dull or bent blades, incorrect blade installation, worn spindle bearings, uneven tire pressure. | Sharpen or replace blades. Ensure blades are installed with cutting edge up. Inspect and replace worn spindle assemblies. Check and adjust tire pressure. |
| Excessive Vibration | Unbalanced or bent blades, loose spindle assembly, worn spindle bearings. | Replace bent blades. Ensure blades are balanced. Tighten spindle mounting bolts. Replace worn spindle assemblies. |
| Belt Slipping or Coming Off | Worn or stretched belt, incorrect belt routing, seized or worn idler pulley, bent pulley. | Replace with new deck belt. Verify correct belt routing. Inspect and replace worn idler pulleys. Check all pulleys for damage. |
| Loud Noise from Deck | Worn spindle bearings, loose components, debris in deck. | Replace worn spindle assemblies. Check and tighten all fasteners. Clean debris from under the deck. |
7. Specifications
Key specifications for the components included in this kit:
- Compatible Tractor Models: Poulan Pro 42" Lawn Tractors (PR1842STA, PR1842STB, PR1842STC, PR1842STD)
- Blade Length: 21 inches (Mulching Blades)
- Replaces OEM Part Numbers:
- Idler Pulley (173438)
- Idler Pulley (173437)
- Mulching Blades (134149)
- Spindle Assemblies (130794)
- Deck Belt (144959)
- Manufacturer: Lawn Mower Parts
- UPC: 792625607251
8. Warranty and Support
For questions regarding this item, specific model compatibility, or serial numbers, please contact the seller directly. The seller strives to provide the best service and values its customers. Additionally, access to two e-books, "Professional Lawn Care For Your Home…By You" and "Mowing and Trimming Safety," will be provided within 48 hours of purchase to assist with product usage and safety.
Please refer to your original Poulan Pro lawn tractor manual for specific warranty information pertaining to the tractor itself.