Small Engine Repair: How to test the Ignition Switch or Kill Switch on a Honda GC 190
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- Опубликовано: 5 май 2012
- Visit www.thesmallengineshop.net
*Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.*
In this video I show you haw to use a ohm meter to test the ignition switch in a Honda GC 190. The ignition switch is a simple on/off switch that connects to the ignition coil and engine ground. When the ignition switch is in the ON position the switch is open and does not allow current to flow through the switch. When the ignition switch is in the OFF position the switch is closed and allows current to flow from the ignition system through the ignition switch, than to ground. This grounds out the ignition system and prevents spark at the spark plug, thus shutting down the engine.
An ohm meter is used to test the ignition switch for continuity. When the switch is open, than no current can flow through the switch and the ohm meter will read infinity, which means infinite resistance. When the switch is closed or in the OFF position current will flow through the switch. The amount of resistance created by the switch in the OFF position should be insignificant, so the meter should show zero resistance. If you do get some resistance when measuring the ignition switch in the OFF position, than check the connections for your meter leads and the ground for the ignition switch, or the contacts within the switch can cause a high resistance reading. If the contacts in the switch are bad, than replace the switch.
Thanks for watching! 
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I normally don't do likes or make comments but you get them all right here! refreshing to listen to someone that knows what they're talking about!!
As someone mentioned below, its a sort of reverse way of thinking. I watched this several times till it sunk in, great video. My application is for a kill switch on a log splitter and a necessary safety measure as oppossed to shutting off the fuel and waiting for the engine to die.
What a well presented and clearly explained video. I never realised that these switches had somewhat ‘reverse’ logic, ie when they’re set to off they make a connection and when ‘on’ they break the circuit. I’m off to retest my switch! Thanks very much for posting 👍😁🏴
Finally, a clear explanation after ten other videos. Thanks friend!
Well done tutorial. I am a former electronics instructor and you did a great job of explaining what should happen when the switch works correctly in ON/OFF positions and what it means if the readings are incorrect. Again, great job and thank you for using a tripod instead of holding the camera by hand. Wish more posts were like yours.
Thanks!
Great video, appreciate the schematic drawing. Needed to add a second shut off switch into the circuit. You answered my questions perfectly 👍🏻
Great video, couldn't figure out the wiring on my kill switch for my old motorbike, seems I had the terminals the wrong way around and you made it clear and simple. the light bulb went bing! Thanks
Thanks
Good video. The diagram was a great visual to help understand as was the meter explanation.
Thank you there's not many switchtests on internet on our power equipment thanks again
Excellent presentation! Clear, detailed information. Impressed.
Yes I certainly did enjoy your video, exactly my problem with an AL-KO to 250 Strimmer. Thank you.
Thanks for the clear and easy to understand video, Perfectly done, Thanks
At last a great tutorial for a newbie.
thanks for the explanation it helped me out alot since my thinking was the safety key made the connection complete, does not it's just the opposite By bypassed it got my blower started this afternoon.
Thank you for sharing that is great advice, very helpful.
Harbor freight, nice! Cool vid man I used it for my motorcycle switch.
+John O'Brien Thanks for Watching!
John O'Brie
Very helpful; thanks.
well done video. thank you
very helpful and understandable, thankyou!
Thanks for watching!
Thank you for this man!
thanks for showing me how to figure this out...
Helpful, thanks-
Awesome video.
Thank you! Quick question when you removed the switch lead was it from the coil?
Thanks
I have a Simpson pressure washer that has the Honda GC 190 engine that simply quit running after about 3 total hours of use. After giving it a few minutes to cool, the engine started for about 1 second and then quit again. Both times as though the kill switch was just switched off - not even as much as a cough or sputter ever since.
So I tested the switch as your video describes, and there is definitely a difference between being in the on or off position. However, it is exactly the opposite in that the on position gives me zero resistance and the off position reads OL. Could that indicate a problem?
Thanks for the clearly explained video.
Ive got a tricky one for you. Honda GX160 on a lesco spreader. Motor runs good, wont shut off. I bought a switch because I damaged it while operating it months before, but noticed at times it wouldn't shut off by switch. After replacing the switch it still wouldn't shut off. Tested the switch (works) tested the kill wire at the coil (it reacts to the switch using muffler as ground or wire that runs to the switch) can the coil be bad on the ground side for it not to shut down the coil?
my 2003 polaris 700 twin is getting no spark at all well i turn the switch off the whole thing goes off like lights on the dash and stuff i do not remember it doing this and when i turn it back on sometimes it will stay off sometimes it will come on what should i do? i believe the stator is bad there is no evidence of it going bad before it quit working though but it does not start at all and gets no spark at all
Can you just disconnect the kill switch and then check for spark at the plug ??
Kinda old but still hopeful bro. I have to check the *Ignition Coil* and the kill switch on my STIHL MS211, the problem is that it won't turn off... I already got a new *IC Module* but I just want to be sure that has nothin with it...
Do you know how many amps does this kill switch wire draw? I am using small 1A switch will it work? Can you measure it with your meter with engine running and off?
High Voltage, little current...little switch.
So basically if the switch is "off" or the plastic key is removed, the spark plug is bypassed, since the closed switch circuit has a lower resistance than the spark plug circuit?
So do I.
I know nothing much about multimeters, so which colour wire goes into which plug on the meter.?🤔.
Red white goes to blue
@@intelin123…. But there are two leads, and they are red and black.
Harbor Freight Fan. Me too.
i hate those engines! haha
Nice tools. 7 minutes for an on off switch Jesus.
Nice thing about RUclips is nobody forces you to watch. You don't always need expensive tools to make repairs.