Max-Torque SS1158 5/8-inch Sprocket Clutch Instruction Manual

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of your Max-Torque SS1158 5/8-inch Sprocket Clutch. Adhering to these instructions will help ensure the longevity and optimal performance of the product. Please read this manual thoroughly before attempting any installation or operation.

2. Product Overview

The Max-Torque SS1158 is a centrifugal clutch designed for power transmission applications. It features a 5/8-inch bore, an 11-tooth sprocket compatible with #35 chain, and a 3/16-inch keyway for secure shaft mounting. The clutch housing includes two set screw holes, tapped 1/4-28, positioned 90 degrees apart for additional securing.

Figure 1: Max-Torque SS1158 5/8 inch Sprocket Clutch. This image displays the central bore, the 11-tooth sprocket, and the outer drum with six circular cutouts, indicating its design.

3. Specifications

• Model: SS1158
• Bore Diameter: 5/8 inch
• Sprocket Teeth: 11
• Chain Type Compatibility: #35 Chain
• Keyway Size: 3/16 inch
• Set Screw Holes: Two, 1/4-28 tapped, 90 degrees apart
• Pitch: 3/8 inch
• Material: Metal
• Color: Black
• Item Weight: Approximately 2.2 pounds
• Item Length: Approximately 5 inches

4. Setup and Installation

Proper installation is crucial for the safe and efficient operation of the clutch. Ensure all components are clean and free of debris before assembly.

1. Shaft Preparation: Ensure the engine crankshaft or drive shaft is clean and has a compatible 5/8-inch diameter. Verify the presence of a 3/16-inch keyway.
2. Key and Washer: Insert a 3/16-inch square key into the shaft's keyway. A fiber washer may be required between the clutch and the engine block, depending on the specific application, to ensure proper spacing and prevent rubbing. (Note: Square key and fiber washer are typically not included with the clutch and must be sourced separately.)
3. Clutch Mounting: Slide the Max-Torque SS1158 clutch onto the shaft, aligning the clutch's keyway with the square key. The clutch should slide on smoothly. If excessive force is required, re-check shaft and keyway alignment and ensure no obstructions are present. Forcing the clutch can cause damage.
4. Securing the Clutch: Once positioned correctly, tighten the two 1/4-28 set screws located 90 degrees apart on the clutch hub. Ensure these screws are securely fastened to prevent the clutch from moving on the shaft during operation.
5. Chain Installation: Install the #35 drive chain, ensuring proper tension. The chain should have a small amount of slack, typically 1/2 to 3/4 inch of total up-and-down movement, to prevent excessive wear and binding.

5. Operating Instructions

The Max-Torque SS1158 is a centrifugal clutch designed for automatic engagement based on engine RPM. There are no manual controls for engagement.

• Engagement: As engine RPM increases, the internal weights of the clutch move outward, engaging the clutch shoes with the outer drum, thereby transferring power to the sprocket and drive chain.
• Disengagement: When engine RPM decreases (e.g., at idle), the weights retract, disengaging the clutch and allowing the engine to run without transmitting power to the drive system.
• Smooth Operation: Ensure the engine is tuned correctly to provide a smooth engagement point. Avoid rapid, aggressive throttle inputs that can prematurely wear clutch components.

6. Maintenance

Regular maintenance extends the life of your clutch and ensures reliable performance.

• Lubrication: Periodically apply 3-5 drops of 30W motor oil to the bushing area behind the C-clip. This should be done every 10-15 hours of operation or as needed, depending on usage conditions. Avoid over-lubrication, which can contaminate the clutch shoes.
• Cleaning: Keep the clutch free of dirt, dust, and debris. A build-up of foreign material can interfere with clutch engagement and disengagement.
• Inspection: Regularly inspect the clutch shoes, drum, and sprocket for signs of wear, damage, or excessive heat discoloration. Check the chain for proper tension and lubrication.
• Set Screws: Periodically check the tightness of the set screws to ensure the clutch remains securely attached to the shaft.

7. Troubleshooting

8. Warranty and Support

Max-Torque products are manufactured to high standards. For specific warranty information, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or inquiries regarding the Max-Torque SS1158 clutch, please contact Max-Torque customer service or your authorized dealer.