C100 Valve Rocker Arm

Brand: Mortch Motor
Product Code: MIC100-6023

Product Viewed: 28

Availability: In Stock

Weight: 0.11kg

Packing Size: 8.50 x 2.50 x 6.00cm

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¥12.00

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C100 Valve Rocker Arm

🔧 Valve Rocker Arm · Rocker Assembly · Valve Train

For Moped, Cub & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines

📋 Product Overview

This is a C100 Valve Rocker Arm, a core component of the engine's valve train. It is suitable for Mopeds, Cub series, and ATVs, and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.

The valve rocker arm is installed inside the cylinder head and converts the rotational motion of the camshaft into reciprocating motion to open and close the valves. Manufactured from high-quality alloy steel with a hardened surface, it offers excellent wear resistance and fatigue strength, making it an ideal replacement when the original rocker arm is worn or damaged.

✨ Key Functions: Transmits camshaft motion · Controls valve operation · Wear-resistant · Direct replacement

📐 Specifications

Product Name

Valve Rocker Arm

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Material

Alloy Steel · Surface Hardened

Position

Inside Cylinder Head

🔧 Compatible Engine Models

This valve rocker arm fits the following engine models:

139FMB

147FMD

147FMF

150FMG

Engine Reference Information:

139FMB: 1P39FMB / 1P39QMB · 50cc-125cc universal engine
147FMD: 1P47FMD · 70cc-110cc engine
147FMF: 1P47FMF · 90cc-110cc engine
150FMG: 1P50FMG · 125cc-150cc engine

🛵 Compatible Vehicles

Mopeds - Various 50cc-150cc moped models
Cub Series - Honda Cub and clone models
ATVs - Small-engine quad bikes / kids ATVs
Mini Moto / Pocket Bikes
Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines

📌 Compatibility Note: This C100 valve rocker arm is suitable for the engine models listed above. Before purchasing, please verify your engine model matches.

⚙️ Function of Valve Rocker Arm

🔄 Motion Conversion

Converts the rotational motion of the camshaft into reciprocating motion to open and close the valves.

⚙️ Leverage Amplification

Amplifies camshaft force through leverage to ensure reliable valve operation.

🔧 Clearance Adjustment

Typically includes adjustment screws for setting proper valve lash.

🛡️ Wear Reduction

Hardened contact surface reduces friction and wear, extending service life.

⚠️ Rocker Arm Failure Symptoms: Engine noise (tapping sound), loss of power, rough idle, inability to adjust valve clearance. If you experience these issues, inspect the rocker arm and replace if necessary.

⚠️ Valve Rocker Arm Failure Symptoms

Engine Noise: Rhythmic tapping or clicking sounds from the top of the engine, frequency changes with RPM.
Loss of Power: Engine feels underpowered, sluggish acceleration.
Rough Idle: Engine vibrates at idle, unstable RPM.
Excessive Valve Clearance: Unable to adjust valve clearance to specification.
Visible Wear: Upon inspection, wear marks on the rocker arm contact surface.
Broken Rocker Arm: Severe cases may result in rocker arm breakage, causing engine failure.

If you experience these symptoms, inspect the valve rocker arm and replace if necessary.

✨ Product Features

OEM Specifications: Manufactured to original specifications for perfect fitment.
Quality Materials: Made from high-quality alloy steel with excellent strength and toughness.
Surface Hardened: Contact surface is hardened for superior wear resistance and long service life.
Precision Machined: Rocker arm bore and contact surfaces precision-machined for smooth operation.
Direct Replacement: Perfect substitute for worn or damaged original rocker arms.
Compatible Upgrade: It is recommended to replace the rocker shaft and adjustment screws at the same time for best results.

🔧 Installation Tip

1. Replacing the valve rocker arm requires removing the cylinder head cover; professional installation is recommended.
2. Before installation, inspect the rocker shaft and camshaft for wear; replace if necessary.
3. Install the rocker arm with correct orientation to ensure proper contact with the camshaft and valve.
4. Adjust valve clearance to OEM specifications after installation.
5. Use feeler gauges for precise valve clearance adjustment.
6. Start the engine and check for abnormal noise after installation.

⚠️ Important Notice: This is a C100 valve rocker arm for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. The valve rocker arm is a critical component of the valve train; proper valve clearance adjustment is required after installation. Images are for reference only. The actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.