1. Introduktion
The Body-Solid GCEC-STK Pro Select Leg Extension and Curl Machine is designed to provide a comprehensive lower body workout, targeting quadriceps, hamstrings, and glutes. This versatile machine allows users to perform both leg extension and leg curl exercises from a single, comfortable position. It features a 210 lb weight stack, adjustable components, and durable construction suitable for both home and commercial gym environments.
2. Sikkerhedsoplysninger
- Læs alle instruktioner inden montering og brug.
- Kontakt en læge, før du starter et træningsprogram.
- Sørg for, at alle bolte, møtrikker og forbindelser er forsvarligt spændt før hver brug.
- Hold børn og kæledyr væk fra udstyret under drift.
- Use the machine on a level surface.
- Do not exceed the maximum recommended weight for the machine.
- Stop med at træne med det samme, hvis du føler smerter, svimmelhed eller kvalme.
3. Opsætning og montering
The Body-Solid GCEC-STK machine requires assembly. Refer to the separate assembly guide for detailed step-by-step instructions. Once assembled, ensure the machine is placed on a stable, level surface with adequate clearance around it for safe operation. The machine dimensions are approximately 54 inches (L) x 54 inches (W) x 71 inches (H).

Figure 1: The Body-Solid GCEC-STK Pro Select Leg Extension and Curl Maskine.
Indledende justeringer
Before beginning your workout, adjust the machine to fit your body comfortably and ensure proper exercise form:
- Seat Back Adjustment: The back pad features 7 position adjustments. Adjust the seat back to ensure your knees are properly aligned with the machine's pivot point for both leg extensions and curls.
- Thigh Restraint/Roller Adjustment: For leg curls, use the oversized pop pin to adjust the thigh restraint to a comfortable position, securing your upper legs. For leg extensions, position your legs behind the oversized rollers.
- Vægtvalg: Select the desired weight using the weight stack pin. The machine comes with a 210 lb weight stack.
4. Betjeningsvejledning
The GCEC-STK machine allows for two primary exercises: Leg Extensions and Leg Curls.
4.1 Leg Extension Exercise (Targets Quadriceps)
- Sit on the machine with your back firmly against the back pad.
- Position your legs behind the oversized rollers, ensuring the rollers rest comfortably on your shins, just above your ankles.
- Firmly grip the handles located on the sides of the seat for stability.
- Extend your legs forward and upward, contracting your quadriceps. Ensure a controlled movement, avoiding jerking motions.
- Slowly lower the weight back to the starting position, maintaining control throughout the movement.

Figure 2: User performing a leg extension exercise.
4.2 Leg Curl Exercise (Targets Hamstrings and Glutes)
- Adjust the thigh restraint by pulling the oversized pop pin and positioning it comfortably over your thighs to secure your upper legs.
- Sit down and wrap your legs over the 8-inch foam rollers, ensuring they rest on your Achilles tendons.
- Firmly grip the handles for stability.
- Press down with your legs, curling them towards your glutes, contracting your hamstrings.
- Slowly return your legs to the starting position, controlling the weight.

Figure 3: User performing a leg curl øvelse.
4.3 Instructional Video
Video 1: Official demonstration of the Body-Solid GCEC-STK Pro Select Leg Extension and Leg Curl Machine in use, showcasing proper form for both exercises.
5. Vedligeholdelse
Regular maintenance ensures the longevity and safe operation of your Body-Solid GCEC-STK machine.
- Rensning: Wipe down the machine, especially the pads and handles, with a damp cloth after each use to remove sweat and dirt. Use mild soap and water if necessary, avoiding harsh chemicals.
- Inspektion: Periodically inspect all nuts, bolts, and moving parts for tightness and wear. Tighten any loose fasteners. Check cables and pulleys for fraying or damage.
- Smøring: Apply a silicone-based lubricant to guide rods and pivot points as needed to ensure smooth operation. Do not over-lubricate.
- Opbevaring: Store the machine in a dry, climate-controlled environment to prevent rust and material degradation.
6. Fejlfinding
If you encounter issues with your machine, refer to the following common troubleshooting tips:
- Knirkende eller skurrende lyde: Check for loose bolts or components. Lubricate moving parts as described in the maintenance section. Inspect cables and pulleys for proper alignment and wear.
- Modstandsproblemer: Ensure the weight stack pin is fully inserted into the desired weight plate. Check for any obstructions in the cable path or issues with the weight stack mechanism.
- Unstable Machine: Verify that the machine is placed on a level surface. Check all frame bolts and connections for tightness.
- Difficulty Adjusting Components: Ensure adjustment pins are fully disengaged before attempting to move components. Clean and lubricate adjustment mechanisms if they are stiff.
For persistent issues or problems not covered here, contact customer support.
7. Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | Kropsfast |
| Modelnavn | GCEC-STK |
| Produktmål (LxBxH) | 54 cm x 54 cm x 71 cm |
| Item Weight (Machine) | 412 lbs |
| Pakkevægt | 415 lbs |
| Maximum Weight Stack | 210 lbs (upgradable to 310 lbs) |
| Spændingsniveau | 4650 lb (Cable Rating) |
| Håndtag Type | Fast |
| Materiale | Steel, Durafirm Pads |
| Foreslåede brugere | Unisex-voksen |
| UPC | 638448008885 |
8. Garantioplysninger
The Body-Solid GCEC-STK Pro Select Leg Extension and Curl Maskinen leveres med en Begrænset livstidsgaranti. For specific details regarding coverage, terms, and conditions, please refer to the official warranty documentation provided with your product or contact Body-Solid customer service.
9. Kundesupport
For further assistance, parts, or service inquiries, please contact Body-Solid customer support through their official website or the contact information provided in your product packaging. When contacting support, please have your model number (GCEC-STK) and proof of purchase readily available.





