Runleader Digital Maintenance Tach/Hour Meter,Battery Replacement for Small Gas Engine,Used on Riding Lawn Tractor Generator Compressor Chainsaws Outboard Motor Pressure Washers

Great little digital tach, given it's low price point! Installed on my 6-wheeler ATV with a single-cylinder, 4-stroke motor. At first, thought it was defective because I got no display, then decided to check the battery and found a plastic safeguard installed in battery compartment to keep it from running down before sale. Once removed, got it up and running without difficulty. So, if you have no display at all, check & REMOVE that plastic insulator inside the battery compartment (for some reason, the instructions make NO MENTION of this at all)!Note to others, in my case the signal wire was a little too short, but I was able to extend successfully by splicing in an extra 3 feet of the smallest wire I had handy (24AWG speaker wire, which is a tad bit larger than the tiny 2-conductor 26AWG inside the signal wire), but still worked fine. Contrary to other reviews which imply the signal wire is just a single wire, there are actually TWO tiny 26-gauge wires inside the signal wire outer insulation (one is red & the other black). To extend, you just splice a small gauge wire to each and make sure you don't accidentally short them out by letting them touch at the end where you wrap them around the spark plug wire. Easy-peasey!

Fairly easy to understand, works well!

I was looking for a simple, temporary tach for my 2003 xl1220c Sportster. The bike does not have a tach. I've never owned a Harley and knew that if I could just have a tach on board for a few days, I'd learn what the bike likes as far as revs at shift points and cruising speed. It also was great at helping me get my idle correct.It even came out of the box set for 4 stroke, 2 cylinder motors (one spark per rotation)It's been working great, but I suspect the battery that came with it is weak as the display isn't very strong. It's okay, I just wouldn't be surprised if it showed stronger contrast if i put a new battery in it.Anyway, this was just the right thing. Self-powered, super easy to connect and then take off. I'd recommend it.

The instillation process was super easy the refresh rate leaves something to be desired but in all a great product cant tell if i have it setup wrong or if my engine (predator 212) is revving to over 8500 because the display flashes red in high rpm

This thing eats batteries for breakfast, lunch, and dinner... with a slice of battery pie to top it all off. Seriously though, this thing has gone through 2 CR2032s in less than 45 days, while just sitting there. The backlight was not on. The engine it is attached to has not been running. Engine is in climate controlled storage (65-85°F). Can’t explain it, other than circuit design. Will say, minus that little issue, this thing it pretty cool! Lot of cool functions to help keep track of engine use and maintenance. I suspect the manufacturer knew about the battery issue, as they have made it extremely easy to change. Also, the meter DOES keep stats if the battery dies. So in the end it is really more of an inconvenience than anything else. *cough, cough* On a side note, Amazon has good prices on bulk CR2032s 😁. Cheers mates! Happy shopping!

Short cord, not long enough to reach the engine from the front of a gokart. The buttons don't work well, have to push hard on them multiple times to finally scroll through the screens. Most disapointing is that it's not even close. My engine does NOT idle at 4,000 RPM! I verified the proper setting in the instructions and tried different number of windings on the spark plug cable.The hours meter works fine.I paid more for this than others that were available hoping for a better product but it simply doesn't work.

I had to use different P/R settings to match what my outboard motor is but once I got it set, it works great. I love having the hours and the RPM's showing. I am not sure I will really use the number of hours until servicing because I service my motor at least once and sometimes twice a year anyways. It's just a little 6hp Tohatsu so it's super easy to service so there's no reason to wait until you hit the certain number of hours. It is a nice feature though.

Easy to work whit it