Do you want to know whether your tool is functioning accurately or not? Do you want to compare your lawnmower’s RPM with the professionals? The rpm is helpful information to know the safe range of rotational speed of your lawnmower to make sure it is working properly.
The way to know the rpm is by having a small piece of a device known as a lawnmower engine tachometer.
So, if you’re getting perplexed about which one is right for you, we have come up with the best lawn mower tachometer reviews, where you can know which one is best for you and how these little geniuses work.
Here’re our top 5 Recommended Lawn Mower Tachometers at a Glance:
- Best Overall: AIMILAR Digital Tach Hour Meter Tachometer
Works on 4 Stroke up to 16 cylinders, Programmable Maintenance Interval Timer, RED Backlit Lighting, Internal CR2450 Battery, IP67 waterproof rating
For 2 or 4 Stroke Gasoline Engine, Record JOB Hours (JOB), 0.1 timer accuracy, Programmable Maintenance Interval Time, RPM Reads up to 20,000, Record and Recall MAXIMUM RPM, RED Backlit Lighting, IP65 rating
- Best Budget: Runleader Digital Hour Meter Tachometer
Contains tachometer, hour meter, and service timers, 0.1 hours accuracy, Programmable reminder, Easy to install, Waterproof rating: IP65
- Best Commercial: Briggs & Stratton 19200 Tachometer
800-25, 000 RPM range, Genuine OEM replacement part
- Best Digital: AGPtek® Professional Digital Laser Photo Tachometer
Instant readings from 2.5 to 99,999 RPM, +/- 0.05 percent accuracy, large, easy-to-read LCD screen, features auto-zero adjustment, Compact, lightweight, and portable.
What Is A Tachometer?
A tachometer is a sensor gadget to measure an object’s working speed like the engine shaft of a vehicle, and it counts the speed in revolutions per minute(rpm). It consists of a dial and a needle, which indicates the current RPM and displays this in the dial.
It produces electrical pulse frequency proportional to the engine speed by using magnetic pickup positioned by the engine’s rotational part. And the machine displays it.
Tachometer with digital LCD or LED screen is popular these days. They also have a marking to indicate a safe range of speed that helps the controller to drive the vehicle safely with appropriate speed and gear sets.
And in terms of the lawnmower, the blade’s rotational speed matters a lot for cutting grasses beautifully. If the blades can reach 2700-3200 rpm (200 mph), it is good for cutting grasses beautifully. You can notice the blade speed by the tachometer. Tachometer costs 12V for giving signals. Normally it’s been connected with the power supply of the vehicle.
5 Best Tachometer for Lawn Mower Reviews
After thorough research, we have narrowed down to the top five best tachometers from the crowd. Let’s check the detailed review:
1. Best Overall: AIMILAR Digital Tach Hour Meter Tachometer
The lucrative features of the AIMILAR digital tachometer have made it to our best engine tachometer list. This tool works really well on 2 and 4 stroke engines.
This model offers 9 programmable firing patterns and an RPM alert. The RPM alert is a useful feature for engines that need frequent tuning. This model can track hours of operation and comes with a max RPM recall function. It comes with a mounting kit.
You don’t have to be worried about accurate reading. It can read correctly within 10 RPM. The AIMILAR has a programmable maintenance interval timer, resettable feature for JOB time, and non-resettable feature for total time.
There is no issue with the display size. This 16 cylinder engine tachometer has a large screen with large, easy-to-read digits. Besides, your data are retained after the battery is changed. Above all, the battery is backed up by a 2-year warranty.
- Reading is accurate
- Large and easy-to-read digits
- Comes with a variety of programmable options for a variety of engines.
- Easy to install and operate
- Lasts long and waterproof
- Worth the money
- Poor battery life
2. Runner-up: Searon Backlit RPM Hour Meter Tachometer
Now reading lawnmower rpm is just a few steps far. With the help of the upgraded Searon store tachometer, you can now recall max rpm. There is a system of programmable rpm alert with a red-backlit warning icon.
Right off the bet, you will be pleased with its easy yet multifunctional aspects. It comes with a ‘Tot’ total hours mode on the feature. If you want to turn off the meter, you need to press and hold the” menu+set” button simultaneously until the display shows off. Then, you can release the button, and the meter will be switched off.
Again, you can easily turn on the hour meter by pressing either ‘menu’ or ‘set’ button. The best part is that the data (total hours) are retained after changing the battery.
Again, you can record hours of operation (JOB Hours) and programmable maintenance interval time. And this model is designed for use in various applications such as motorcycles, chainsaws, lawnmowers, tractors as well as marine engines.
- Easy to handle
- Good little tool
- Works well with lawn mower engine
- Great for maintenance
- Displays total running hours
- Mounting is easy
- Not water-resistant
3. Best Budget: Runleader Digital Hour Meter Tachometer
If you are looking for the best lawn mower tachometer for the money, grab the Runleader HM011F. It is quite a handy device to monitor the number of hours.
The first thing you will see that the display screen remains visible when the engine is off.
A programmed reminder timer is a great addition to its features. Its service timer will countdown the maintenance time and remind the user with a flash alert service icon.
This bundle pack comes with all the lucrative features. This waterproof best small engine tachometer calculates the revolutions per minute correctly when its engine is on. Moreover, this instrument is configured for different engine firing patterns, and this model can adjust the engine idle.
The meter has a CR2450 replaceable battery, which can retain data after the battery is changed. Above all, its installation is a cinch as it comes with a very detailed set of instructions.
- Works precisely
- Easy user-interface
- Saves data even after the battery is changed.
- Easy to install
- Comes with long wire
- Weak LCD and hard to read when outside
4. Best Digital – AGPtek® Professional Digital Laser Photo Tachometer
If you want a hand-held digital tachometer, the AGRPTEK digital laser tachometer will be an outstanding choice.
It can offer highly accurate non-contact readings with the help of high-speed laser-aim operation. The instant readings are from 2.5 to 99,999 RPM.
Again, you will not feel any difficulty while reading the digits. The readings are shown on a large, easy-to-read LCD screen. It can display last, minimum, and maximum reading.
Again, it comes with the auto-zero adjustment and 24-inches reflective tape.
This model can cater to a wide range of applications like measuring the rotating speed of a motor, model cars, wheels, lathe for metal or woodcutting work.
Above all, it is easy to use. You only need to do some steps to install it. This model will offer you the exact thing – nothing more, nothing less.
- Compact and lightweight
- Easy-to-see LCD screen
- Quite durable and high resolution
- The display automatically shows the last value
- Sometimes shows wrong digits.
5. Best Commercial: Briggs & Stratton 19200 Tachometer
If you are looking for the best single-cylinder tachometer, the Briggs and Stratton 19200 model will be an amazing choice. These are exact OEM standards which are crafted to deliver optimum performance in Briggs and Stratton engines.
This model ensures a healthy Briggs and Stratton lawnmower engine by maintaining emissions regulations and valuable warranty coverage.
Your Briggs and Stratton machine will keep running at great speed if you have the original Briggs and Stratton parts. And this tachometer is one of them.
This tachometer can effectively increase RPM. This manual model is easy to determine, and it is quite compact.
- Simple and elegant
- Great for small engine
- Works efficiently
- Shows accurate results.
- Made of plastic and so not sturdy
Buying Guide of Best Small Engine Tachometer
When you have finally decided on buying a tachometer for your lawnmower, several factors will help you to find the best one in the market. For instance, these features are known to radiate the quality your tachometer needs to hold as well as its overall functioning. Such factors are mentioned below:
Power Capacity of the Tachometer
While buying the best small engine tachometer, you should check the essential factor – the power capacity. Now, the lawnmower tachometer is usually powered by two types of batteries. One of them is the lithium-powered battery, and the other is the AAA type.
Before getting one, make sure that it has replaceable batteries, which you can change over time. It should of good quality and a prolonged lifetime. If you find any other type than the two types mentioned here, it will be better to avoid them at all costs.
The quality of the tachometer is as important as its power. You could consider it to be the premium one while purchasing. When you install a tachometer meter, the first problem is that there will be engine idle time for your device. Dirt, debris, and other foreign particles will accumulate on it. It must be resistant to rain, water as well as the sun during different seasons.
For this reason, you will need a high-quality model made of the best materials. You need to maintain your machine properly; otherwise, it might not sustain long. That is why it is better to buy a model that does not require much of your maintenance time.
Revolutions per Minute (RPM)
The RPM of a gas engine or any other engine of a lawnmower specifies the number of rotations of that engine per minute while working. A tachometer is used to determine the max rpm of cylinder engines, gas engines of mowers to a specified limit. That is the rotational speed of the engine. It usually has a maximum range of 10000 rpm. This is called the range of the device. In some cases, the range can exceed more than 10000rpm.
Now, before you buy the device, it is better to check the range. It is best to get something that could provide higher.
First of all, let us explain how digital memory works. The tachometer’s memory is not specified to record thetotal hours of work of its previous duty. Instead of that, it will record the time of its specified work of the day. It is more or less like a service timer for your lawnmower.
The meter will save your data automatically until the engine is off. Your data neither needs to be saved manually nor erased after the power is cut off by accident. If we consider its huge advantages, it is better to include this feature in your model instead of putting the data by hand.
How to Hook Up a Tachometer on a Lawnmower?
Without having enough knowledge or guidance, you cannot install a meter tachometer or any other type. It will not take you hours of operation to hook it up but just a focused hour. Now, how should you put up the best engine tachometer for your lawnmower?
Firstly, read the manual to identify the ground and the signal wire. It is color-coded for identification. Then, turn the engine off by pulling out the spark plug by hand. You need to locate the spark plug wire attached to its boot and secure it with the signal wire. Use electrical tape to do so.
Now, you have to loosen the bolt on the engine body and wrap the ground wire to it and tighten it properly. You are sure to fall under a warning icon unless you use zip to tie the wire to the handle of your mower.
Finally, plug on the boot and turn on the engine. It is better to check the display unit of your hour meter and also the wire connections. The engine firing patterns should be checked as well.
Frequently Asked Questions (FAQs)
What is the best lawn mower tachometer?
The lawn mower tachometer should have a maximum range of 10000 rpm. The meter should save your data automatically. It must be resistant to rain, water as well as the sun during different seasons. The model should come with replaceable batteries. The AIMILAR ticks all the features, and so it is our top pick.
What RPM Do Lawn Mowers Run?
Most of the lawnmowers run at speeds between 2700-3200 RPM. Small mowers run at around 2800 while mowers with large deck single blade spin at about 3000 RPM.
How Do You Test A Tachometer?
Take a multimeter and set it to AC voltage. Now connect its negative to the good chassis ground of a vehicle, and the positive lead to the tachometer’s wire. Now start the vehicle and wait till it reaches the average speed. At this point, the tachometer should show a fairly constant AC voltage if it’s working perfectly.
How Do I Increase The RPM On My Lawn Mower?
There is a spring attached to the governor arm of your lawnmower. The tighter the spring is, the faster the RPM will be. For this, first, hold the top of the governor so that it can’t move. Now hold the governor arm with piler and turn this counter-clockwise to tighten the spring.
How Do I Re-calibrate My Tachometer?
It varies from one model to another. Since an inductive tachometer or inductive hour meter use voltage to measure RPMs, you can follow a process calibrator to adjust the machine. However, small tachometers often don’t have the option for calibration.
The right rate of rpm can save your machine from overheating and burn out. And the tachometer can rescue your investment. Some best lawn mower tachometer models clip or wrap a wire around the spark plug wire. Some digital tachometer models don’t need a physical connection to record rpm.
Whichever you choose, you need to keep in mind some factors. Keep in mind the caveats, and the tool will serve you for many days. Consult with the professionals to help you out in a critical situation.
Be safe! Enjoy your mowing!