1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Ohlins HD 772 OHL STX 36 Blackline shock absorbers. To ensure optimal performance and safety, please read this manual thoroughly before attempting any procedures. Keep this manual for future reference.
2. Safety Information
Working with motorcycle suspension components requires specialized knowledge and tools. Improper installation or adjustment can lead to serious injury or damage to your motorcycle. It is strongly recommended that installation and major adjustments be performed by a qualified motorcycle technician.
- Always wear appropriate personal protective equipment.
- Ensure the motorcycle is securely supported before beginning any work.
- Refer to your motorcycle's service manual for specific torque specifications and procedures.
- Do not attempt to disassemble the shock absorber. It contains high-pressure gas.
3. Package Contents
Verify that all components are present and undamaged upon unpacking. The package should contain:
- Two (2) Ohlins HD 772 OHL STX 36 Blackline Shock Absorbers
- User Manual (this document)
This image displays a pair of Ohlins HD 772 OHL STX 36 Blackline shock absorbers, featuring black springs and bodies, designed for motorcycle suspension.
4. Installation (Setup)
The following steps provide a general overview of the installation process. Always consult your motorcycle's specific service manual for detailed instructions and torque specifications.
- Prepare the Motorcycle: Secure the motorcycle on a stand so that the rear wheel is off the ground and the swingarm can move freely.
- Remove Original Shocks: Carefully remove the original shock absorbers, noting the orientation of all components.
- Install Ohlins Shocks: Position the Ohlins HD 772 OHL STX 36 Blackline shock absorbers with the correct orientation. Ensure all bushings and spacers are correctly seated.
- Secure Fasteners: Install all bolts and nuts. Tighten to the torque specifications provided in your motorcycle's service manual. Do not overtighten.
- Initial Adjustments: Perform initial preload adjustments as described in the 'Operation (Adjustment)' section.
- Final Checks: Before riding, ensure all fasteners are tight, and there is no interference with other motorcycle components.
Professional Installation Recommended: Due to the critical nature of suspension components, professional installation by an authorized Ohlins service center or a qualified motorcycle mechanic is highly recommended.
5. Operation (Adjustment)
The Ohlins HD 772 OHL STX 36 Blackline shock absorbers are designed for performance and adjustability. The primary adjustment available on this model is spring preload.
5.1 Spring Preload Adjustment
Spring preload affects the ride height and initial compression of the spring. Adjusting preload changes the sag of the motorcycle, which is crucial for proper handling and comfort.
- To Increase Preload: Turn the preload adjuster ring clockwise. This will compress the spring further, increasing ride height and reducing sag.
- To Decrease Preload: Turn the preload adjuster ring counter-clockwise. This will decompress the spring, decreasing ride height and increasing sag.
Important: Always adjust both shock absorbers equally. Make small adjustments and test the motorcycle's handling. Refer to an Ohlins service manual or consult a professional for detailed sag measurement and adjustment procedures.
6. Maintenance
Regular maintenance ensures the longevity and consistent performance of your Ohlins shock absorbers.
- Cleaning: Keep the shock absorbers clean from dirt, dust, and road grime. Use mild soap and water, then rinse thoroughly. Avoid high-pressure washers directly on seals.
- Inspection: Periodically inspect the shock absorbers for any signs of leakage, damage to the body or springs, or wear on the bushings.
- Fastener Check: Regularly check that all mounting bolts are tightened to the correct torque specifications.
- Service Intervals: Ohlins shock absorbers require periodic servicing (e.g., oil change, seal replacement) by an authorized service center. Consult an Ohlins dealer for recommended service intervals based on your riding conditions.
7. Troubleshooting
This section addresses common issues you might encounter. For complex problems, contact an authorized Ohlins service center.
| Problem | Possible Cause | Solution |
|---|---|---|
| Excessive Sag / Low Ride Height | Insufficient spring preload. | Increase spring preload (turn adjuster clockwise). |
| Harsh Ride / Too Stiff | Excessive spring preload. | Decrease spring preload (turn adjuster counter-clockwise). |
| Oil Leakage | Damaged seals or internal components. | Stop riding immediately. Contact an authorized Ohlins service center for inspection and repair. |
| Unusual Noises | Loose mounting bolts, worn bushings, or internal damage. | Check all mounting bolts for proper torque. Inspect bushings for wear. If noise persists, seek professional inspection. |
8. Specifications
Key specifications for the Ohlins HD 772 OHL STX 36 Blackline shock absorbers:
- Brand: Ohlins
- Model: HD 772
- Style: Performance, Blackline
- Vehicle Service Type: Motorcycle
- Auto Part Position: Rear
- Exterior Finish: Black
- Material: Aluminum, Titanium
- Item Weight: Approximately 7.7 pounds (per pair)
9. Warranty and Support
For information regarding warranty coverage, technical support, or authorized service centers, please refer to the official Ohlins website or contact your local Ohlins dealer. Keep your proof of purchase for warranty claims.
