RL-HM035A Digital Hours Tachometer,Engine Temperature Gauge

Got it for my phatmoto motirized bicycle with a 80cc engine. Its works perfectly. Rpms and temp read very accurately. Not sure why one of the reviews say it doesnt have a tachometer when that is the main function. One small issue is it would turn off on its own so i just have to manually shut it off which is easy.just press both buttons simultaneously for 2 seconds.

Working as intended. I question the accuracy of the hour gauge on the unit as it has surpassed the hr gauge on my machine. The temp gauge seems to work good. I haven’t tested it for accuracy but knowing ballpark temps is great.

There are plenty of issues with this sensor. It was enticing because it was less expensive than a trailtech one and also had the tachometer feature. I disliked the sparkplug head temp sensor since it was not bent 90degrees. I had to bend it myself because it would not fit with the aircool fins on my bike. The display just went out on me where it was missing specific lines so the letters and numbers were very hard to read. It refused to auto off so it wasted battery unless you manually turned it off. I tapped on the display gently to try and get the letters/numbers back and it just immediately cracked, very fragile.I will not buy again and will now pay even more to get a trailtech

This review is for the Runleader RL-HM0354-M5 multifunction meter. I bought this particular style because it comes with a mounting base that fits to a round bar - perfect for attaching to one of the mower control arms.I installed this in my Toro Timecutter 50 in model 75759 with Kawasaki 23 HP engine. It is a huge improvement over the very limited and basic Toro factory hour meter, but will not fit in the factory panel location without messy modification. However, it was very easy to attach this to one of the control arms. It should be easy to mount on many different machines.This Runleader unit will measure engine runtime anytime the engine is running, whether or not you are sitting in the seat, because it is triggered by sensing pulses from one of the spark plugs. It can be programmed with starting runtime hours in case you are replacing an older hour meter and want to preserve the total cumulative engine run time from a previous installation for instance. It can be programmed with countdown service interval timers to remind you when to change the oil and filter.The Runleader meter has a replaceable, common CR2032 coin cell battery, which is a real plus but unfortunately, you have to unmount it to get to the underneath of the display to change the battery! I knocked off one star for inconvenience there. The meter comes with some double-sided tape if you just want to slap it on a flat surface but this makes battery replacement extremely messy so I don't recommend that method of attachment.By comparison, the Toro brand factory hour meter is not resettable, does not measure anything except runtime, does not have a replaceable battery, and only measures runtime when you're actually sitting in the seat. It will not measure runtime if you leave the engine idling and get out of the seat for example, because it plugs into a factory harness that senses the seat interlock to start the timing.INSTALLATIONI have some annotated photos from my installation that should be very helpful to others.I had to drill a large hole in the plastic fairing adjacent to the right hand spark plug in order to put the temperature sensor ring terminal underneath the spark plug and route the temp sensor wire with connector to the outside of the fairing. The hole size is just large enough for the connector on the wire to pass through from the inside. The ring terminal itself is much larger and cannot be bent to allow the wire to come out parallel with the plug so don't try that. The rest of the installation was very straightforward. For the runtime and RPM sensor wire, I used five wraps around the right hand spark plug wire and secured them with the supplied tie wrap as shown in the photo. I routed the wires along the inside of the mower frame with one zip tie through an unused hole in the plastic body, and protected the wires using nylon spiral harness wrap for a very neat installation. There was some excess length in some of the wires so I folded them before wrapping.I zip tied the meter to the right hand inside control arm of the mower. I push the control arms out to park the mower to make readings and this works just fine.PROGRAMMINGTo save battery life, program the backlight to be off. After shutting down the engine, you also need to turn off the unit manually by pressing and holding both the m and s buttons simultaneously.RPM range should be set to 'r4' (0 - 6,000 RPM) for this Kawasaki engine, and the RPM pickup needs to be programmed to '1P1R' (1 pulse per rotation). This calibrated the RPM beautifully and exactly matched and external laser tachometer that I borrowed from my friend to verify the speed.As a matter of fact, once I installed this meter, I became aware that the factory throttle cable arm and linkage was not allowing for the full range of throttle control without some modification and adjustment. As it was delivered, it was only making about 3100 RPM on the meter. Once I got things adjusted and could make the full 3600 RPM that the Kawasaki engine is rated for, performance improved significantly, especially top mowing speed.I programmed the high temperature alarm to be 276° f, which seems to be above the highest operating temperature I encountered in the summer. Be aware that if you set this too low, the alarm will keep coming on and flashing the backlight wasting battery power even if you have backlight turned off.I set the RPM alarm speed to 3675 to alert me to any possible over revving while accounting for slight bumps when first hitting the throttle while the governor kicks in.I've used this meter for about 2 months on my new mower and I'm delighted with it so far. Hope you find the photos very useful.

quick and easy to install. just grab your necessary tools before hand and its easy i put it on my xr150l. took five minutes only thing is its a lot of setting up but all I need is temp and tach so i didn't focus on all the other stuff just that. reads accurate and shows proper tach and temp levels when reading but doesn't turn off unless you do does have replace battery so that's good.

Edit 2, short tutorial on 'light';When it is cloudy or dark the light is useful, the manual indicatesthis method, but the manual and menu/select is chinglish and notvery clear.Default display (this is what shows on screen when you haven't touchedany buttons for a minute or so... The display shows hours, Temp, and Time,now push in and hold 'S' until time on screen flashes, let go of S , now pressM (mode) 11 times (lol) and you will be at 'Light' flashing, now press S untilit says on , off , or auto, whichever you prefer, then do nothing and just waita min, and your selection will be saved. (I upped my rating a couple stars, sinceI at least got the light issue figured out, still should have a separate light buttonthough.)Edit 1;There isn't really anything like this available inthis price range, or any price for that matter thatincludes rpm, temp, hours, alerts etc, howeversome horrible issues;-I have a 4st, needs to be on 2st to read rpmsproperly (thanks to another reviewer that alertedus to this, found 'that' hack to make it work).-The temp prob to spark plug ring 'Crimp' is largerI lucked out and got it to fit without stripping theplug threads as it's so large, you may not haveroom in the plug area to interface properly, alsothe ring is very larger, luckily the bike I have hasthe larger size plug, a smaller plug may not seatair tight due to the large ring.-Only two programming buttons, 3 would make lifeso much simpler.- Should be a separate light on/off switch or accuratemeans of turning on and off......(this light issue erased, figured it out)I've gone through this aspect of the feature a dozentimes at least, trying variations, nothing allows youto even get to the 'light' one time and turn it on or off,hold the scroll button for a long time the first time aroundfor example and when you're on 'light' , it will bump overto 'TIME' and start flashing, this alone deserves less thana one STAR rating.-Mentioned already was the very tedious and difficult batteryreplacement, if you haven't seen their 'design' , best of luck,plus the battery starts flashing 'low bat' almost as soon asyou load it lol (with light off even).-I would happily pay 3 times the price of this to get one thatis well designed and easy to use. This item works, andfairly well in some ways, and would buy again since thereare no items that I can find that monitor RPM, TEMP, HRs,and some other parameters.-------------------The cable comes waded up in a figure 8, I guess they thinkthat looks pro in the package, well it's going to look horribleon my new motorcycle. I spent 5 minutes trying to straightenit out and the photo is after this attempt. Not at all happy withhow this will look, the other extension cable is the same.There is no excuse for this shoddy packaging, there was plentyof room to simply have it rolled up, but I guess that wouldn'tlook pro to the manufacturer lol , I mean lmao, but not in agood way. I will update the rest of the product performancein a few days.