C100 Timing Driven Sprocket 28T

Brand: Mortch Motor
Product Code: MIC100-6025

Product Viewed: 30

Availability: In Stock

Weight: 0.06kg

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C100 Timing Driven Sprocket (28T)

🔧 Timing Sprocket · Camshaft Sprocket · Valve Train

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

📋 Product Overview

This is a C100 Timing Driven Sprocket with 28 teeth, a critical 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 timing driven sprocket (camshaft sprocket) is mounted on the camshaft and works with the timing chain to transfer rotational motion from the crankshaft to the camshaft, ensuring the valves open and close at the correct times. Manufactured from high-quality steel with precision-machined teeth, it offers excellent wear resistance and strength, making it an ideal replacement when the original sprocket is worn or damaged.

✨ Key Functions: Drives camshaft · Controls valve timing · Precision teeth · Direct replacement

📐 Specifications

Tooth Count

28 T

28 Teeth

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Product Name

Timing Driven Sprocket

Material

High-Quality Steel

Position

Camshaft End

Chain Type

Timing Chain

🔧 Compatible Engine Models

This timing driven sprocket 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 timing driven sprocket with 28 teeth is suitable for the engine models listed above. Before purchasing, please verify your engine model matches.

⚙️ Importance of Timing Sprocket

🔄 Power Transmission

Works with the timing chain to transfer power from the crankshaft to the camshaft, driving the valve train.

⏱️ Timing Control

Precise tooth count and positioning ensure valves open and close at the correct times for proper engine operation.

🔧 Fixed Ratio

Provides a 2:1 reduction ratio from crankshaft to camshaft (28T driven sprocket with 14T drive sprocket) for proper valve timing.

🛡️ Reliability

Quality materials and precision machining ensure long-term reliable operation, preventing chain skip and timing errors.

⚠️ Timing Sprocket Failure Symptoms: Engine noise, loss of power, rough idle, hard starting, incorrect valve timing, timing chain skip. If you experience these issues, inspect the timing sprocket and chain, and replace if necessary.

⚠️ Timing Sprocket Failure Symptoms

Engine Noise: Rattling or grinding sounds from the timing chain area.
Loss of Power: Engine feels underpowered, sluggish acceleration.
Rough Idle: Engine vibrates at idle, unstable RPM.
Hard Starting: Incorrect timing makes starting difficult.
Incorrect Valve Timing: Timing marks do not align; potential risk of piston-to-valve contact.
Worn Teeth: Upon inspection, sprocket teeth show wear, deformation, or damage.

If you experience these symptoms, inspect the timing sprocket and chain, and replace if necessary.

✨ Product Features

OEM Specifications: Manufactured to original specifications with 28 teeth for perfect fitment.
Quality Steel: Made from high-strength steel for excellent wear resistance and long service life.
Precision Teeth: Precision-machined teeth ensure smooth engagement with the timing chain.
Heat Treated: Proper heat treatment enhances hardness and wear resistance.
Timing Marks: Clear alignment marks for easy installation and timing verification.
Direct Replacement: Perfect substitute for worn or damaged original timing driven sprockets.

🔧 Installation Tip

1. Replacing the timing sprocket requires removing the cylinder head side cover and timing chain; professional installation is recommended.
2. Clean the camshaft and sprocket mounting surfaces before installation to remove oil and debris.
3. Align timing marks carefully during installation to ensure correct camshaft-to-crankshaft timing.
4. Tighten the sprocket mounting bolt to the specified torque.
5. After installation, rotate the crankshaft manually to verify timing marks align before starting the engine.
6. It is recommended to inspect the timing chain for wear and replace if necessary.

⚠️ Important Notice: This is a C100 timing driven sprocket with 28 teeth, suitable for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. Proper alignment of timing marks is critical during installation to prevent engine damage. 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.