1. مقدمه
Thank you for choosing the KINGSMITH Leg Extension and Curl Machine. This manual provides essential information for the safe and effective use of your new fitness equipment. Please read this manual thoroughly before assembly or operation and retain it for future reference.
اطلاعات مهم ایمنی
- قبل از شروع هر برنامه ورزشی با پزشک خود مشورت کنید.
- Always inspect the machine for loose parts or damage before each use. Do not use if damaged.
- قبل و در حین استفاده، از محکم بودن تمام پیچ و مهرهها اطمینان حاصل کنید.
- کودکان و حیوانات خانگی را در حین کار از دستگاه دور نگه دارید.
- از دستگاه روی سطح صاف و پایدار استفاده کنید.
- Do not exceed the maximum weight recommendation of 440 pounds (200 lbs for plates).
- کفش و لباس ورزشی مناسب بپوشید.
- اگر احساس درد، سرگیجه یا حالت تهوع دارید، فوراً ورزش را متوقف کنید.
2. محصول تمام شدview
The KINGSMITH Leg Extension and Curl Machine is designed for comprehensive lower-body development, offering dual functionality for both leg extensions and hamstring curls. Its robust construction ensures stability and durability for home gym use.
ویژگی های کلیدی:
- عملکرد دوگانه: Seamlessly switch between leg extensions (quadriceps) and leg curls (hamstrings).
- اجزای قابل تنظیم: Features a fully adjustable seat, backrest, and leg support pads to accommodate various body sizes and ensure optimal comfort and alignment.
- Heavy-Duty Frame: Constructed with high-quality 14-gauge steel (1.5mm wall thickness) for superior stability and long-term use.
- Smooth Cable System: Utilizes a high-strength steel cable and pulley system for consistent, fluid resistance and reduced friction.
- Cushioned Shin Pad: Provides comfortable support during leg extensions, ensuring proper alignment and reducing discomfort.
- طراحی ضد لغزش: Enhances stability during intense workouts.

شکل 2.1: تمام شده استview of the KINGSMITH Leg Extension and Curl ماشین.

Figure 2.2: Key specifications and design elements.
3. راه اندازی و مونتاژ
Your KINGSMITH Leg Extension and Curl Machine requires assembly. Please follow the detailed instructions provided in the included Assembly Manual. Ensure all components are present before beginning assembly.
اجزای شامل:
- اجزای قاب اصلی
- Seat and Backrest Pads
- Leg Support Pads
- Cable and Pulley System
- جای صفحه وزن
- کتابچه راهنمای مونتاژ
- Assembly Tools (wrenches, hex keys)
- راهنمای کاربر (این سند)
مراحل مونتاژ (کلیات بیش ازview):
- Unpack all components and verify against the parts list in the Assembly Manual.
- Assemble the main frame structure, ensuring all bolts are finger-tight initially.
- Attach the seat and backrest, securing them with the provided hardware.
- Install the leg support pads and the weight plate holder.
- Route the cable through the pulley system as illustrated in the Assembly Manual.
- Once all components are in place, fully tighten all bolts and nuts using the provided tools.
- Perform a final inspection to ensure stability and proper function of all moving parts.
Note: Barbell plates are not included and must be purchased separately.
4. دستورالعمل های عملیاتی
The KINGSMITH Leg Extension and Curl Machine allows you to perform two primary exercises: Leg Extensions and Hamstring Curls. Proper form and machine adjustment are crucial for effective and safe workouts.
Adjusting the Machine:
- تنظیم صندلی: Use the adjustment lever (Figure 4.1) to slide the seat forward or backward to ensure your knees align with the machine's pivot point.
- تنظیم پشتی: Adjust the angle of the backrest for comfort and proper support during leg extensions.
- Leg Pad Adjustment: Position the leg pads so they rest comfortably on your shins (for extensions) or behind your ankles (for curls).

Figure 4.1: Adjusting the seat for proper fit.
Performing Leg Extensions:
- Sit upright on the machine with your back firmly against the backrest.
- Position your shins under the leg pads.
- Select your desired weight by loading plates onto the weight holder.
- Grasp the handles for stability.
- Extend your legs fully, contracting your quadriceps. Pause briefly at the top.
- Slowly lower the weight back to the starting position, maintaining control.

Figure 4.2: Proper shin pad placement for leg extensions.
Performing Hamstring Curls:
- Adjust the backrest to a flat or slightly inclined position.
- Lie face down on the bench, ensuring your knees are just off the edge of the bench.
- Position your ankles under the leg pads.
- Select your desired weight.
- Curl your legs upwards towards your glutes, contracting your hamstrings. Pause briefly at the top.
- Slowly lower the weight back to the starting position, maintaining control.

Figure 4.3: Demonstrating dual functionality for leg extensions and curls.

Figure 4.4: The smooth pull-through cable system.
5. تعمیر و نگهداری
Regular maintenance will ensure the longevity and safe operation of your KINGSMITH Leg Extension and Curl ماشین.
روزانه / بعد از هر بار استفاده:
- Wipe down all surfaces, especially padded areas and handles, with a damp cloth to remove sweat and dust. Use a mild, non-abrasive cleaner if necessary.
هفتگی/دوهفتهای:
- Inspect all bolts, nuts, and fasteners for tightness. Retighten any loose components.
- Check the cable for any signs of fraying, wear, or damage. If damage is found, discontinue use immediately and replace the cable.
- Inspect the pulleys for smooth operation and ensure they are free of debris.
- Check the condition of all padded surfaces for tears or excessive wear.
ماهانه/فصلی:
- Apply a small amount of silicone-based lubricant to any pivot points or moving parts that may experience friction, as recommended in the Assembly Manual. Avoid over-lubrication.
- Thoroughly clean the entire machine, including hard-to-reach areas.
Caution: Do not use abrasive cleaners or solvents, as they may damage the finish or components of the machine.
6 عیب یابی
This section addresses common issues you might encounter with your Leg Extension and Curl Machine. For problems not listed here, please contact customer support.
| مشکل | علت احتمالی | راه حل |
|---|---|---|
| دستگاه ناپایدار یا لرزان به نظر میرسد. | Loose bolts or nuts; uneven floor. | Check and tighten all assembly bolts and nuts. Ensure the machine is on a flat, level surface. |
| Cable movement is not smooth or makes noise. | Debris in pulleys; dry cable; worn cable. | Clean pulleys. Apply silicone lubricant to the cable and pulley axles. Inspect cable for wear and replace if necessary. |
| Resistance feels inconsistent. | Cable or pulley issue; weight plates not properly seated. | Check cable and pulleys as above. Ensure weight plates are fully loaded and stable on the holder. |
| Pads are uncomfortable or worn. | سایش و پارگی معمولی. | Contact KINGSMITH customer support for replacement pads. |
7. مشخصات
| صفت | جزئیات |
|---|---|
| نام مدل | LKC |
| نام تجاری | کینگ اسمیت |
| مواد | فلز، پلاستیک |
| رنگ | مشکی |
| ابعاد مورد (LxWxH) | 50 x 20 x 40 inches (approximate assembled) |
| ابعاد محصول (DxWxH) | 12"D x 20"W x 40"H (as listed) |
| وزن مورد | 53 کیلوگرم (تقریباً 116.8 پوند) |
| حداکثر وزن توصیه شده | 440 Pounds (total user + weight plates) |
| Max Plate Weight Capacity | 200 lbs (plates) |
| نوع بند | Cable/Pulley system |
| Pulley Ratio | 2:1 (as per image) |
| گیج فولادی | 14 Gauge Steel (1.5mm wall thickness) |
8. گارانتی و پشتیبانی
اطلاعات گارانتی:
The KINGSMITH Leg Extension and Curl دستگاه همراه با a 2 سال گارانتی سازندهاین ضمانتنامه شامل نقص در مواد و ساخت در شرایط استفاده و سرویس عادی میشود. لطفاً فاکتور خرید خود را برای موارد گارانتی نگه دارید.
گارانتی شامل موارد زیر نمی شود:
- Damage caused by improper assembly or installation.
- خسارت ناشی از سوءاستفاده، سوءاستفاده، تصادف یا غفلت.
- خسارت ناشی از تعمیرات یا تغییرات غیرمجاز.
- Normal wear and tear, including but not limited to pads, cables, and paint finish.
پشتیبانی مشتری:
For any questions, concerns, or assistance with your KINGSMITH Leg Extension and Curl Machine, please contact KINGSMITH customer support. Have your model number (LKC) and purchase information ready when contacting support.
Please refer to the contact information provided at the point of purchase or on the official KINGSMITH webسایتی برای جدیدترین کانالهای پشتیبانی.





