Runleader HM032B Inductive Tachometer Gauge User Manual

1. Introduction

The Runleader RL-HM032B is a self-powered digital maintenance reminder tachometer and hour meter. This versatile device combines a tachometer, hour meter, service timers, job timer, programmable max RPM reminder, and backlit mode selection. It features a replaceable battery, shutdown function, and a waterproof design, making it suitable for a wide range of gasoline engines.

Figure 1: HM032B Tachometer Gauge Overview

2. Key Features

• Multi-Function Display: Includes Tachometer (RPM), Hour Meter (TOT), Service Timers (SVC & SVC2), and Resettable Job Timer (JOB).
• Hour Meter: Tracks total engine run time (TOT) with 0.1 hours accuracy. Allows presetting initial total hours.
• Maintenance Reminders: Programmable service timers (SVC & SVC2) for maintenance intervals. Warning icon flashes and backlight turns red when service is due.
• Job Timer: Resettable timer for specific work tasks (e.g., oil change, air filter replacement).
• Tachometer: Records accurate RPM values, helps adjust engine idle, supports programmable engine firing patterns, and features a programmable RPM alert with red backlight. Records and recalls MAX RPM.
• Backlight: Green backlit display with programmable modes (always on, auto, off).
• Power: Self-powered with a replaceable CR2032 battery.
• Durability: Waterproof (IP65 rated).
• Certifications: CE ROHS certified.

3. Package Contents

Upon opening the package, verify that all items are present:

• 1 x Runleader HM032B Tachometer Gauge
• 1 x User Manual
• 2 x Cable Ties
• 1 x Set Screw (for mounting)
• 1 x 3M Double-Coated Tissue Tape (for mounting)
• 1 x Small Screwdriver (for battery compartment)

4. Setup and Installation

4.1 Battery Installation

The device is powered by a replaceable CR2032 battery. Before first use, remove the battery insulator if present.

1. Locate the battery compartment on the back of the unit.
2. Use a coin or the provided screwdriver to open the battery cover.
3. Remove the plastic insulator tab (if present) from under the battery.
4. Ensure the CR2032 battery is correctly seated with the positive (+) side facing up.
5. Replace the battery cover and secure it.

Figure 2: Battery Replacement and Insulator Removal

4.2 Mounting the Device

The tachometer can be mounted using the provided 3M double-coated tissue tape or set screws.

1. Choose a clean, flat surface on your equipment for mounting.
2. Clean the surface thoroughly to ensure good adhesion.
3. Peel off the backing from the 3M tape and firmly press the tachometer onto the desired location.
4. Alternatively, use the set screws for a more permanent installation.

4.3 Wiring for RPM Detection

The tachometer detects RPM by wrapping its wire around the spark plug wire of your engine.

1. Locate the spark plug wire on your engine.
2. Take the inductive wire from the tachometer (wire length 1500mm / 59 inches, can be lengthened or shortened).
3. Wind the inductive wire around the spark plug wire 5-8 turns.
4. Secure the coiled wire with the provided cable ties to prevent it from unwinding or coming loose.

Figure 3: Spark Plug Wiring for RPM Detection

5. Operation

5.1 Power On/Off

• Power On: Press either the 'MENU' or 'SET' button to power on the device.
• Power Off: Press and hold both 'MENU' and 'SET' buttons simultaneously for 3 seconds to shut down the device. Data is retained after shutdown.

5.2 Display Modes

The device cycles through various display modes. Use the 'MENU' button to navigate between them.

• Clock Display: Shows current time when the engine is off.
• Total Hours (TOT): Displays the total accumulated engine run time. This value is non-resettable.
• Service Timers (SVC & SVC2): Shows countdown for programmed maintenance intervals.
• Job Timer (JOB): Displays the time for a particular work task. This value can be reset.
• Real-time RPM: Shows the engine's current RPM when the engine is running.
• Max RPM: Displays the maximum RPM recorded during operation.

Figure 4: Multi-function Display Modes (TOT, SVC, JOB, RPM)

6. Maintenance

6.1 Service Timers (SVC & SVC2)

The device features two programmable service timers to remind you of routine maintenance tasks. When a service interval is reached, the warning icon will flash, and the backlight will turn red.

Examples of maintenance tasks:

• Oil change
• Air filter replacement
• Spark plug inspection

Figure 5: SVC & SVC2 Maintenance Reminders

6.2 Battery Replacement

The device uses a CR2032 battery. When the battery is low, the device will remind you to replace it. Follow the steps in Section 4.1 to replace the battery.

7. Settings

To enter the settings menu, press and hold the 'SET' button for 2 seconds. Use 'SET' to cycle through options and 'MENU' to change values. Confirm settings by holding 'MENU' and 'SET' for 3 seconds.

7.1 Initial Time Setting

You can set an initial total hour value to replace an old meter. This can only be changed once.

Figure 6: Initial Time Setting for Total Hours (TOT)

7.2 Clock Setting

1. Press 'SET' to select the clock icon (it will flash).
2. Press and hold 'SET' for 2 seconds; the minute display will flash.
3. Press 'SET' to change the minute value.
4. Press 'MENU' to switch to hour setting (hour display will flash).
5. Press 'SET' to change the hour value.
6. Long press 'MENU' and 'SET' for three seconds to confirm settings.

7.3 Engine Type Settings (Firing Patterns)

The device supports various engine firing patterns for accurate RPM measurement. Select the pattern that matches your engine.

1. Navigate to the engine type setting (e.g., 'Stro 1P1R').
2. Press 'SET'; the RPM display will flash.
3. Press and hold 'SET' for 2 seconds; the firing pattern (e.g., '1P1R') will flash.
4. Press 'SET' to cycle through available firing patterns (e.g., 1P1R, 1P2R, 2P1R, 3P1R, 3P2R, 4P1R, 5P2R).
5. Long press 'MENU' and 'SET' for three seconds to confirm settings.

Figure 7: Applicable Engine Firing Patterns and RPM Capacity

7.4 RPM Alarm Reminder Settings

You can set a programmable RPM alert. When the engine RPM exceeds this value, the backlight will turn red and a warning icon will flash.

7.5 Refresh Rate Setting

The RPM measurement range selection mode can be programmed for improved RPM data accuracy.

7.6 Backlight Settings

Choose how the backlight behaves:

1. Navigate to the backlight setting (e.g., 'Lit Auto').
2. Press 'SET'; the 'Lit' display will flash.
3. Press 'SET' to cycle through options: 'Auto' (automatic), 'On' (always on), 'Off' (always off).
4. Long press 'MENU' and 'SET' for three seconds to confirm settings.

8. Specifications

Figure 8: Product Dimensions (Unit: mm)

9. Troubleshooting

• Device not powering on: Ensure the CR2032 battery is correctly installed and the plastic insulator tab has been removed. If the battery is old, replace it.
• No RPM reading: Verify that the inductive wire is wrapped 5-8 turns tightly around the spark plug wire and secured. Check that the correct engine firing pattern is selected in the settings.
• Inaccurate RPM reading: Adjust the number of turns of the inductive wire around the spark plug wire. Ensure the correct engine firing pattern is selected.
• Display is dim or blank: The battery might be low and needs replacement.

10. User Tips

• For optimal RPM detection, ensure the inductive wire is wound tightly around the spark plug wire for 5-8 turns and secured with cable ties.
• The JOB timer is useful for tracking specific maintenance tasks like oil changes or air filter replacements, as it can be reset independently.
• The device can be turned off by holding both 'MENU' and 'SET' buttons simultaneously for 3 seconds, saving battery life when not in use.
• When setting the initial total hours (TOT), remember this can only be done once.

11. Warranty and Support

The Runleader HM032B Inductive Tachometer Gauge comes with a 2-year warranty from the date of purchase. For technical support or warranty claims, please contact your retailer or the manufacturer directly.

12. Scope of Application

This tachometer is suitable for a wide range of gasoline-powered equipment, including but not limited to:

Figure 9: Examples of Applicable Equipment

• Lawn Mowers
• Generators
• Golf Carts
• ATVs (All-Terrain Vehicles)
• Floor Sweepers
• Road Machinery
• Outboard Motors
• Motorcycles
• Compressors
• Chainsaws