Moly Magnolia Hour Meter and Digital Tachometer
Moly Magnolia Small Engine Hour Meter and Digital Tachometer Instruction Manual
Brand: Moly Magnolia | Model: Hour Meter and Digital Tachometer
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Moly Magnolia Small Engine Hour Meter and Digital Tachometer. Please read this manual thoroughly before use to ensure proper function and longevity of the device.

Image: Front view of the Moly Magnolia Small Engine Hour Meter and Digital Tachometer, showing the digital display and control buttons S1 and S2.
The Moly Magnolia Small Engine Hour Meter and Digital Tachometer is a versatile 2-in-1 device designed to track engine running hours and display real-time RPM. It is suitable for a wide range of gasoline engines, including those found in motorcycles, ATVs, boats, lawn mowers, and generators. Its waterproof and durable design ensures reliable performance in various conditions.
Product Features
- Wide Application: Compatible with any 2 or 4-stroke gasoline engine such as motorcycles, ATVs, boats, outboards, lawn mowers, UTVs, snowmobiles, pit bikes, generators, tractors, scooters, golf carts, and mopeds.
- 2-in-1 Multifunction: Includes both tachometer and hour meter functions, displaying engine speed and total running hours.
- Waterproof & Durable: Features a 100% waterproof and epoxy-encapsulated design, resistant to liquid infiltration, strong shocks, and vibrations.
- Easy Installation: Simple connection by wrapping the wire around the spark plug.
- Maintenance Reminder: Helps track service intervals for oil changes, valve adjustments, tune-ups, and spark plug changes.

Image: Diagram illustrating key features of the tachometer/hour meter, including its waterproof, anti-freeze, hour tracking, and environmental protection capabilities.
Setup and Installation
The installation of the hour meter and digital tachometer is straightforward. Follow these steps for proper setup:
- Mounting: Choose a suitable location on your equipment for mounting the device. Ensure it is secure and visible.
- Wire Connection: Locate the spark plug wire of your engine.
- Wrap the Wire: Carefully wrap the connection wire from the tachometer around the spark plug wire for approximately 5 rounds.
- Secure Connection: Fix the wrapped wire securely to prevent it from coming loose during operation.

Image: Step-by-step visual guide for installing the tachometer by wrapping its wire around the spark plug cable.
Operating Instructions
Timing Function (Hour Meter)
The device tracks the total working time of your engine. The timing range is 0-99999 hours. The timing accuracy is 0.1 hours for values below 1000 hours and 1 hour for values above 1000 hours.
- Display Total Hours (TOT): When the engine is shut down, the display will show the total accumulated working hours.
- Resetting TOT Value: The TOT value can be reset if it is less than 1 hour. Refer to the device's specific button functions for resetting.
Tachometer Function (RPM)
The tachometer displays the engine's revolutions per minute (RPM) in real-time when the engine is running. The RPM range is 0-25000 RPM with an accuracy of 10 RPM. The RPM display refreshes every 0.5 seconds.

Image: Examples of the display showing total working hours (TOT HOURS), current RPM, and a maintenance reminder icon.

Image: Illustration of the RPM real-time display, highlighting the 0-30000 RPM range and 10 RPM accuracy as shown in the graphic.
Programmable Firing Patterns (Stroke Setting)
The tachometer supports 9 different stroke settings to ensure accurate RPM readings for various engine types. To select the appropriate stroke mode:
- Press and hold the "S1" button to enter the stroke mode selection.
- Press "S1" repeatedly to cycle through the options.
- The available settings are:
- 01: 4 stroke in common (1P1R)
- 02: 2 stroke in common (1P2R)
- 03: Other stroke (2P1R, 3P1R, 3P2R, 4P1R, 5P2R, 6P1R, 8P1R)
- 04: RPM shut down, only display running hours.
- Release "S1" to confirm your selection.
Maintenance
Maintenance Reminder
The device includes a maintenance reminder feature. After setting a specific service interval, the "SERVICE" icon will illuminate to remind you when maintenance is due. This helps in scheduling:
- Oil changes
- Valve adjustments
- Engine tune-ups
- Spark plug changes
- Other routine service tasks
Regular maintenance ensures the optimal performance and extends the lifespan of your engine.
Troubleshooting
If you encounter issues with your Moly Magnolia Hour Meter and Digital Tachometer, consider the following common troubleshooting steps:
- No Display/Incorrect Reading:
- Ensure the wire is securely wrapped around the spark plug wire for the recommended 5 rounds.
- Check for any damage to the connection wire or the device itself.
- Verify that the engine is running properly and generating a spark.
- Confirm the correct stroke mode (1P1R, 1P2R, etc.) is selected for your engine type.
- Inaccurate RPM Reading:
- Re-check the stroke mode setting. An incorrect setting will lead to inaccurate RPM.
- Ensure the wire is not too loose or too tight around the spark plug wire.
- Test on another engine if possible to rule out engine-specific issues.
- Display Not Responding to Buttons:
- Ensure the buttons are not stuck or obstructed.
- If the device has been exposed to extreme conditions, allow it to return to normal operating temperature.
If problems persist after attempting these steps, please contact customer support for further assistance.
Specifications
| Brand | Moly Magnolia |
| Model Number | Moly Magnolia-Meter1 |
| Item Weight | 2.12 ounces (60 Grams) |
| Product Dimensions (L x W x H) | 0.8 x 0.5 x 0.5 inches |
| Material | Plastic |
| Timing Range | 0-99999 Hours |
| Timing Accuracy | 0.1/1 Hour |
| RPM Range | 0-25000 RPM |
| RPM Accuracy | 10 RPM |
| RPM Refresh Rate | 0.5 seconds |
| Waterproof Rating | IP65 |

Image: Visual representation of the device's IP65 waterproof rating, submerged in water.
Warranty and Support
Moly Magnolia is committed to providing high-quality products and customer satisfaction. While specific warranty details are not provided in this manual, the manufacturer assures strong design, research, and development capabilities, along with a strict quality control system.
If you encounter any product problems or require installation assistance, please do not hesitate to contact Moly Magnolia customer support. They are dedicated to providing satisfactory solutions and service.
For support, please refer to the contact information provided with your purchase or visit the official Moly Magnolia website.
Applications
This hour meter and digital tachometer is suitable for a wide variety of gasoline-powered equipment, including but not limited to:
- Motorcycles
- Snowmobiles
- ATVs (All-Terrain Vehicles)
- Chainsaws
- Lawn Mowers
- Motorboats
- Tractors
- Generators
- Scooters
- Golf Carts
- Mopeds

Image: Visual examples of various gasoline engines and equipment where the hour meter/tachometer can be used.
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