1. Introduction
This manual provides essential information for the proper installation, maintenance, and troubleshooting of your SGL Transmission Drive Belt, designed as a high-quality replacement for Stiga Tornado Pro 9118 XWS lawn tractors. Adhering to the guidelines in this manual will help ensure optimal performance and longevity of the drive belt.
2. Product Overview and Features
The SGL Transmission Drive Belt is a high-quality aftermarket replacement for OEM part number 135062002/1. It is engineered to provide reliable power transmission for your Stiga Tornado Pro 9118 XWS lawn tractor.

Figure 2.1: The SGL Transmission Drive Belt, designed for durability and efficient power transfer.
Key Features:
- High Strength Belt Fibres: Engineered for exceptional resistance to stretching, ensuring consistent performance.
- Premium Quality Rubber Compound: Formulated to prevent cracking and extend the belt's operational life.
- Precise Tolerances: Manufactured to ISO standards for accurate fitment and reliable operation.
- Guaranteed Fit Promise: Designed to fit the specified Stiga model as a high-quality alternative to genuine parts.

Figure 2.2: Illustrative cross-section of a V-belt, highlighting the internal construction for strength and flexibility.
3. Compatibility and Specifications
This SGL Transmission Drive Belt is specifically designed as a replacement for the following model:
- Compatible Device: Stiga Tornado Pro 9118 XWS
- OEM Part Number Replaced: 135062002/1
Important Note on Fitment: The belt used on lawn tractors can sometimes vary depending on the machine's serial number, even for the same model. To ensure correct fitment, it is crucial to measure your existing belt before ordering. The dimensions of this SGL replacement belt are as follows:
- Internal Length: 103 inches (2616 mm)
- External Length: 105 inches (2667 mm)
General Specifications:
| Brand | SGL |
| SGL Part Number | SGLPN00000015365 |
| Manufacturer | Generic_MFG |
| Product Type | Transmission Drive Belt |
4. Installation Guide
Replacing a transmission drive belt requires careful attention to safety and proper procedure. If you are unsure about any step, it is recommended to consult a qualified technician or refer to your lawn tractor's specific service manual.
4.1 Safety Precautions
- Always turn off the engine and remove the spark plug wire to prevent accidental starting.
- Allow the engine and any hot components to cool down before beginning work.
- Wear appropriate personal protective equipment, including gloves and eye protection.
- Ensure the lawn tractor is on a flat, stable surface and properly supported if lifting is required.
4.2 Tools Required (Typical)
- Wrenches or socket set
- Pliers
- Screwdrivers
- Gloves
- Safety glasses
4.3 Removal of Old Belt
- Locate the transmission drive belt. It typically connects the engine pulley to the transmission pulley.
- Identify any belt guides, tensioners, or guards that need to be removed or loosened to access the belt.
- Carefully release tension from the belt tensioner pulley. This may involve loosening a bolt or lever.
- Once tension is released, carefully remove the old belt from all pulleys. Note the routing of the belt for reinstallation. Taking a photo before removal can be helpful.

Figure 4.1: An exploded diagram illustrating typical components of a lawn tractor's drive system, including pulleys and belt routing. Refer to your specific tractor's manual for exact component identification.
4.4 Installation of New Belt
- Route the new SGL transmission drive belt around the pulleys exactly as the old belt was routed. Ensure it sits correctly in all pulley grooves.
- Re-engage the belt tensioner, ensuring proper tension is applied. The belt should be taut but not overly tight.
- Reinstall any belt guides, guards, or covers that were removed.
- Double-check that all bolts and fasteners are securely tightened.
4.5 Post-Installation Check
- Before starting the engine, manually rotate the pulleys to ensure the belt moves freely and does not rub against any components.
- Reattach the spark plug wire.
- Start the engine and engage the transmission briefly to confirm proper operation. Listen for any unusual noises or signs of slippage.
- If any issues are observed, turn off the engine immediately and re-inspect the installation.
5. Maintenance
Regular inspection and maintenance of your transmission drive belt will prolong its life and ensure consistent performance of your lawn tractor.
- Visual Inspection: Periodically inspect the belt for signs of wear, such as cracks, fraying, glazing, or missing chunks. Check for any foreign objects lodged in the belt or pulleys.
- Tension Check: Ensure the belt maintains proper tension. A loose belt can slip, causing loss of power, while an overly tight belt can put undue stress on bearings and pulleys.
- Cleaning: Keep the belt and pulleys free from dirt, grass clippings, oil, and other debris. Clean surfaces can prevent slippage and premature wear.
- Replacement: Replace the belt if it shows significant signs of wear, damage, or if it consistently slips. The lifespan of a belt depends on usage conditions, but regular inspection is key to timely replacement.
6. Troubleshooting
This section addresses common issues related to transmission drive belts.
| Problem | Possible Cause | Solution |
|---|---|---|
| Belt Slipping | Incorrect tension, worn belt, glazed pulleys, oil/grease on belt. | Adjust tension, replace belt, clean pulleys, degrease belt/pulleys. |
| Excessive Noise (Squealing/Screeching) | Loose belt, misaligned pulleys, worn belt, foreign object. | Adjust tension, check pulley alignment, replace belt, remove debris. |
| Premature Belt Wear | Improper tension (too tight or too loose), misaligned pulleys, worn pulleys, debris. | Adjust tension, check/correct pulley alignment, inspect/replace pulleys, keep area clean. |
| Belt Comes Off Pulleys | Incorrect tension, worn belt, damaged belt guides, misaligned pulleys. | Adjust tension, replace belt, repair/replace guides, correct alignment. |
7. Support
For further assistance regarding the fitment or performance of your SGL Transmission Drive Belt, please contact the seller or manufacturer directly. When contacting support, please have your product details (SGL Part Number SGLPN00000015365) and the model of your Stiga lawn tractor (Tornado Pro 9118 XWS) readily available.





