RunleaderDigital Hour Meter Tachometer, Maintenance Reminder, User Shutdown, Use for ZTR Lawn Mower Tractor Generator Marine Outboard ATV Motor Snowmobile and Gas Powered Equipment (1)

I use this on my Honda generator to track time between oil changes.It was easy to install and does the job well.

Installed on Vulcan welder/generator with Predator 420cc single cylinder 4 stroke. Take time to wrap the plug wire carefully and read instructions to get the correct RPM setup. This 1 cylinder motor needed the tach set to “2 cylinder” to get correct reading. Works great so far.

I bought this to ensure the engine RPM remained within a valid range after I replaced the carburetor. Being able to confirm the engine RPM is reassuring, and the Cumulative Hours of Operation and Hours Countdown Before Scheduled Maintenance features are an added bonus. I am very pleased with this product.The written installation and setup steps were good enough. I took care to wrap the wire tightly around the ignition cable 5 times, keeping it secure with the included zip ties. It takes some care (and more zip ties) to keep the wire away from direct contact with the engine or muffler. I found a place on the dash to stick the meter on using the included double-stick foam tape.Initially I set the mode to 1P2R (1 spark Pulse per 2 Revolutions), but that gave me RPM readings of 6400 at full throttle. So I switched the mode to 1P1R and started getting normal readings of 3200 or so at full throttle.

This was super easy to install and very helpful to know the RPM of the engine and hours of use on a seldom used 13 horsepower, gas, now propane house generator. When doing a gas to propane conversion, it is necessary to adjust the propane flow to the engine under load close to what it was with gasoline for optimum power output. Get one of these before you do the conversion and measure the RPM of your engine at near full load before converting to propane, then you will know about where to set it after the propane conversion is complete.

The rpm gauge part of it is sufficient. It updated about once per second so it is not fast but it gives you a good idea of the rpm. The hour meter part works great. To my understanding you cannot see the hours unless the engine is off. Also the display is always on.

I got this tach because I thought the maximum RPM of my chainsaw (Stihl MS250) was a bit higher than it possibly should be after I installed a replacement carburetor. I had seen on Steve's Small Engine Saloon on U-Tube that exceeding the max RPM would probably damage the engine. I did NOT want this tach as a permanent installation on my saw. I took the cover off and wrapped the required 5 turns or so of the end of the cable around the spark plug wire. This was not easy as there is limited space. I was able to set the max. RPM to under the 14000 limit for this saw. For the low price of this tach, it's good value.What I really want was one of those tachs you just hold near the spark plug to detect the RPM but I could not find one.

I ordered this to use as a diagnostic tool to tune riding mowers, generators, weed whackers, gas powered welding machines, etc... it's really easy to set it for the different engine configurations and really easy to wrap the lead around a spark plug wire and get a decently accurate tach. My mower and Miller Legend run a whole lot better now that they are properly tuned.

I ordered this Digital Tachometer to be able to set the RPM to Engine specifications on my pressure washer. Instructions on the descriptions at Amazon paint a much easier picture of the process.1- It instructs to wind the lead wire about 5 times around the Spark plug lead. However, per the instructions if your Engine is a 4 Stroke, it is required to wrap the lead wire of the Tachometer around the Head of the Magneto????? I would have to take my entire machine apart (Gas tank, Muffler, heat shields, etc.) to be able to get to the Magneto. NOT EASY as Depicted in description.2- This is the misleading part: The instructions tell you that if the RPMs are reading Too High, to unwind the tachometer wire to less turns. And if RPMs are reading Too Low, to increase the number of turns of the Tachometer wire around the Magneto Head or Spark Plug wire as it may be the case of your Engine.So, unless you already know what the RPM is on your Engine, there is no way of knowing how many times to wrap the lead wire to get an accurate RPM reading.The way I see it, you would first need to adjust the RPM by some other means so you can calibrate this Tachometer to display the right RPMs.What a disappointment.....I returned.