C100 Starter Relay Assy
- Brand: Mortch Motor
- Product Code: MIC100-6056B
- Product Viewed: 189
- Availability: In Stock
- Weight: 0.16kg
- Packing Size: 6.00 x 7.00 x 7.00cm
US$2.20 787 SOLD
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C100 Starter Relay Assy (Male Terminal)
🔧 Starter Relay · Electrical Switch · High Power Control
For Moped, Cub & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines
This is the C100 Starter Relay Assy (Male Terminal), a standard relay commonly used throughout the gas scooter industry. This relay is suitable for Mopeds, Cub series, and ATVs (All-Terrain Vehicles), and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.
A relay is an electrical switch that opens and closes under the application of a second electrical circuit. In basic operation, the relay controls an output circuit of much higher power than the input circuit. This allows the controls for the high power circuit to be made with lower capacity wiring and switches, improving electrical system safety and reliability.
✨ Key Function: Low-current control of high-power circuits · Protects switch contacts · Essential electrical component · Wide compatibility
Product Name
Starter Relay
Model
C100
Terminal Type
Male
Voltage
12V DC
Applications
Moped / Cub / ATV
🔌 Input Circuit
Low-current signal from the ignition switch or start button activates the relay's internal electromagnetic coil.
Low current · Control signal
🔋 Output Circuit
Controls the high-current circuit from the battery to the starter motor. When activated, it connects power to crank the engine.
High current · Starter motor
Why Relays Are Important: Relays allow high-power circuits to be controlled using lower capacity wiring and switches. This prevents high current from passing through the ignition switch, protecting switch contacts and improving electrical system safety and longevity.
This starter relay fits the following engine models:
And most 50cc-150cc engines using the same starter relay specifications.
- Mopeds - Various 50cc-150cc moped models
- Cub Series - Honda Cub and clone models
- ATVs - Small-engine quad bikes / 4-wheelers
- Mini Moto / Pocket Bikes
- Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines
📌 Compatibility Note: The C100 starter relay is an industry standard, widely used on various small motorcycles and ATVs. This is the male terminal version – please verify your original relay has male terminals before purchasing.
- No Response: Pressing the start button does nothing, but battery is known to be good.
- Clicking but No Start: Relay clicks when button is pressed, but starter motor doesn't turn or turns weakly.
- Intermittent Operation: Starts sometimes but not others, or requires multiple button presses.
- Abnormal Heating: Relay body feels unusually hot, indicating possible internal contact damage.
If you experience these symptoms, inspect and replace the starter relay as needed.
🔧 Installation Tip
1. Disconnect the negative battery terminal before installation to prevent shorts.
2. Verify your original relay terminal type (male/female) – this is the male version.
3. Unplug the old relay and plug in the new C100 relay, ensuring full insertion.
4. Reconnect the battery and test starting function.
5. If the starter motor operates normally, installation is complete.
- 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 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.
- 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.
Tags: Starter Relay



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