C100 L.Crakncase Rear Cover

Brand: Mortch Motor
Product Code: MIC100-6011

Product Viewed: 284

Availability: In Stock

Weight: 0.17kg

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C100 Left Crankcase Rear Cover

🔧 Crankcase Cover · Engine Side Cover · Transmission Side Cover

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

📋 Product Overview

This is a C100 Left Crankcase Rear Cover, an important sealing and protective component on the outside of the engine. It is suitable for Mopeds, Cub series, and ATVs, and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.

The left crankcase rear cover is installed on the rear left side of the engine, covering internal components such as transmission gears and clutch cable mechanisms, preventing oil leaks and keeping contaminants out. Manufactured from high-quality aluminum alloy with excellent sealing properties and durability, it is an ideal replacement when the original side cover is damaged, warped, or has poor sealing.

✨ Key Functions: Seals transmission chamber · Protects gear mechanisms · Prevents oil leaks · Direct replacement

📐 Specifications

Product Name

C100 Left Crankcase Rear Cover

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Material

Aluminum Alloy

Position

Left Crankcase Rear

🔧 Compatible Engine Models

This C100 left crankcase rear cover 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 left crankcase rear cover is suitable for the engine models listed above. Before purchasing, please verify your engine model matches.

⚙️ Function of Left Crankcase Rear Cover

🔧 Sealing Function

Seals the transmission chamber, preventing oil leaks and keeping contaminants out while protecting internal gear mechanisms.

🛡️ Transmission Protection

Protects transmission gears, shift mechanisms, and other internal components from external damage.

🔩 Clutch Cable Mount

Typically includes the clutch cable adjustment mechanism for easy clutch clearance adjustment.

💧 Oil Reservoir

Works with the crankcase to form the oil sump that stores engine lubricating oil.

💡 Important Note: The left crankcase rear cover typically includes the clutch cable adjustment screw, which is essential for setting proper clutch clearance. Ensure the gasket is in good condition when replacing to prevent oil leaks.

⚠️ Left Crankcase Rear Cover Failure Symptoms

Oil Leakage: Visible oil seepage around the cover, typically with oil stains visible at the bottom.
Warped Cover: Cover deformed due to impact or improper installation, preventing proper sealing.
Loose Mounting Bolts: Bolts loose, causing poor sealing, oil leaks, or noise.
Deteriorated Gasket: Rubber gasket hardened, cracked, or lost sealing ability.
Increased Oil Consumption: Poor sealing leads to oil leaks, noticeably reduced oil level.
Clutch Adjustment Difficulty: Adjustment screw corroded or damaged, affecting clutch adjustment.

If you experience these symptoms, inspect the left crankcase rear cover and gasket, and replace if necessary.

✨ Product Features

OEM Specifications: Manufactured to original specifications for perfect fitment.
Aluminum Alloy Construction: Cast from high-quality aluminum alloy for strength and excellent heat dissipation.
Precision Machined: Sealing surface precision-machined for proper fit with the crankcase.
Heat Resistant: Material designed to withstand engine operating temperatures.
Clutch Adjustment Mechanism: Includes clutch cable adjustment screw for convenient maintenance.
Direct Replacement: Perfect substitute for damaged or worn original left crankcase rear covers.

🔧 Installation Tip

1. Before replacing the left crankcase rear cover, it is recommended to drain the engine oil.
2. Remove the old cover and clean the crankcase mounting surface to remove oil and debris.
3. Install a new gasket, inspecting for damage or deformation.
4. Install the cover and tighten mounting bolts evenly to the specified torque to avoid warping.
5. Adjust the clutch cable free play to the proper specification.
6. After installation, refill with the proper amount of oil and start the engine to check for leaks.

⚠️ Important Notice: This is a C100 left crankcase rear cover for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. It is recommended to replace the gasket at the same time to ensure proper sealing. 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.