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How To Diagnose a Yamaha YZ and WR Starting System
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- Опубліковано 18 сер 2024
- The starting system on a motorcycle plays a crucial part in powering your machine, but how can you tell if it is bad or not? In this video we demonstrate how to test your electrical components to see if they need to be replaced or if it's just time for a new part, causing the problem. When troubleshooting your electrical components, Rocky Mountain ATV/MC has got you covered.
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To load test a battery without special equipment..put your meter across the terminals..read say 12.5 volts..then crank the bike..if the meter indicator drops to 10Volts or less its probably a bad battery...
Nice video, simple but to the point. Load test is a great way to find those batteries that seem good, take a charge, and frustrate the heck out of you when it won't crank more than twice before it clicks!
Before jumping to any conclusions, go around and tighten ALL high current attachments. Start with the negative side of the battery and snug it up. Follow the negative wire to the frame ground and snug it up. Snug the positive side of the battery then follow the wire to the starter relay and snug it up there too. On the other side of the relay, snug the wire that goes to the starter and then finally, snug up the wire on the starter motor. ANY connection that is not tight will fail to pass high current at voltages of 12 - 14 volts and this is, by far, the most common "starter" problem that comes into our shop.
By the way, when you press the starter of a bike (even if it's in neutral), hold in the clutch because many (but not all) bikes have a switch in the clutch that will prevent the start button from supplying current to the starter relay. When you test the starter as shown in the video, be ready because it will strongly try to jump out of your hand. Probably best to do this test near the floor so the starter won't have so far to fall and expect that there will be a large spark when you first touch the jumper wire to the starter. If the motor drags, draws a lot of current and gets hot while spinning, replace the starter.
As it says in the video, if everything down to the starter, including the starter motor is working, but the engine won't turn over, usually you have already noticed that the headlight dims when you press the starter button. Something has locked up the engine and it's NOT the starter no matter what the bike's owner thinks is wrong. Do your own testing, don't rely on what the bike's owner THINKS is wrong.
Great video. Very helpful. Is the start relay and start solenoid the same thing. You seem to be interchanging these names. Thanks
So helpful :)
Glad it was helpful! Thanks for watching!
My brother's bike WR250 main relay is not being controlled by the ECU, I jumped the main relay blue wire to ground to get the bike started. The ECU has good ground and 12v supply, all wires from ECU to components has continuity, start, clutch, neutral switches are ok.
All these tests lead me to believe the ECU is not grounding the main relay control wire, my temporary solution is to control the relay via a switch to ground, run the bike and check if the ECU gets hot, if it's cool then he can use the bike untill he orders an ECU.
Thank you!
im so glad i found this video my bike died mid rid and wouldnt start it would just click
Nice video m8,bravo! I never like electricity problems on dirt bikes or to be honest at all my bike's.But my starter is doing a sound like almost ready to start but 1 time or two times then it starts those clicks.&when I charge the battery it's okay for a week.(new battery)Weird cuz 2 times same problem.
instaBlaster...
Idek what I’m doing tbh my yz450 is from 2019 and it was stuttering and then it shut off and I haven’t been able to find why sinxe this vid helped but I might just needa swallow my pride n take it in to a shop😂
I got a 2018 yz450f fully rebuilt timings right valves in spec everything new I press the button the bike turns over and back fires but never starts up
Same
So my wr450 has kick and electric start. Haven't pulled my starter out yet to bench test but. Question is.... ill hit button to start and just get a click. Then go to kick and its like the motor is locked up till I put it in gear and rock back and forth till its free. Then I can kick start but starter still just clicks. Can a bad starter cause my kick start to lock up?
Have you discovered what was the problem? My WR is doing that click
How is that Yamaha specific, that is for all bikes with electric start
Yep
Yeah but mostly yamaha has electric start.
my 2009 wr450f starts ok with a brand new charged battery but after a couple of days the battery does not retain the charge and doesn't charge any more. If I charge the battery outside the bike with a charger the E-starter works only for a couple of times the the battery is done, I clamed the warranty and now I'm about to decide wether burn my third new battery or sadly just keep kicking the bike to start forever. My technician says it might have a short circuit or a energy loss somewhere, he doesn't know. My halogen bulb seems ok as the type the manual says 35/36.5w so hopefully is not a car type bulb. Any idea?. The bike feels just fine to ride with good engine power and the light seems strong and normal for night riding, the voltage is producing I remember is over 13.5v so the battery should be charging normally although because there's not ytxz7s 6ah size where I live, I'm using ytxz5 4ah. It's a carbureted model so 4ah should be enough my mechanic says.
i have 2007 wr450, tore down beginning of 2021 to rebuild carb. I cant remember were the long battery ground connects, any help?
I NEED HELP WITH SOMONE WITH EXPERIENCE ON MY 2017 yz450f
I need to know how to check if my stator is bad the wires coming off of the stator which ones do i test (color coded) and what should they read? What happens if i test them and it reads “0L” theres not one video on UA-cam that shows me how to test that specific stator thank you
Is one of the fuses a back up fuse?
Yes
Kickstart master race
Well I like the Hondas because some of there smaller bikes come with both
Like yeah I’ll use the e-start most the time but when my battery is dead then I’m kicking it
Wish you had done a wr250r.
What if sometimes it just makes the whine noise only
Starter clutch
i had an sealing failure, so engine oil flooded the starter, the starter barely spun..
My 19 yz250fx acts like battery is low, push starter, I get a click click then it slowly at first then it seems to kick in and spin at the right speed, what could that be? Just by watching g video I see that the clicking I'm getting is right, starter is dragging at first then kicks over faster, I guess that's a bad starter?
👍
I just bought a 2019 YZ250F with 29 hrs on it. Electric start works when engine is cold. After 3 laps on the track I get absolutely nothing when I try to start it. When the engine cools down the starter work fine. No clue what is wrong. Any ideas?
Figure anything out with it?
I put in a new battery and never had that problem again. All is great now!
not the sarter its somthing to do with the internals
Whats exhaust end cap?
Dam glad a have a 2016 kx450f with a kick start lever :)
Kx really you give money for Kawasaki dude I don't remember 1 good bike 30 years all categories;)Always something was wrong or another bike was better from naked to dirt bikes or fast bike's even at small bikes haha like when we was 12;)
@@Dramadelta close to 200 race hours on my kx250fs original crank. Absolutely can’t beat that
What seems to be a problem of my bike it won’t start I didn’t use it for like 4months but before it does run. My bike is yz450f 2016
Can somebody help me out please before I scrap my bike 🤣🤣 my 2018 yxf 450 just died when I press the stator button it just ticks like it's a dead battery but it is not I tested startor was bad sometimes work sometimes didn't I striped it down brushes where wore down one side I replaced all bushes and springs and solenoid beside battery and still the same ting what I did notice though do when I use multimeter put it on battery shows over 13v when I push the button it drops to 0v I thought was a bad battery changed it still same thing and with the solenoid with out pushing the buttons measuring from red cable side to black cable side reads over 13v but same thing when I push the button just ticks and reads OV I'm bringing to think the solenoid is a bad one would I be correct I would have thought with out touching the starting button there shouldn't be a voltage reading across those connections ??? Thanks for any help in advance
If the lead is bad, does that mean the starter may not click?
WHAT COULD BE THE REASON WHY MY WR250F 2015 DOES NOT START WHEN THE MOTORCYCLE IS NOT IN NEUTRAL?
It's most likely because your bike has a neutral safety switch. This will have to be disabled for you to be able to use your electric start while the bike is in gear. You can do a quick search online and find what other users have done to disable this switch.
@@rmatvmc THANK YOU, I WILL SEARCH AND COMMENT!
I am having a starting problem with a 2008 WR250R. It takes multiple presses of the starter button and cranks to start the bike. I tested the battery, starter relay and motor and they are all OK. Also I replaced the fuel pump, ignition coil, spark plug, fuel injector, injector coil and air filter. What could still be causing the problem? Thanks
have you found the issue?
Any progress? I have the same problem
Kinda barely touched upon this at the end: everything gets dirty and a little "out of whack" riding trails. I would think the first things to check would be all the safety switches that prevent the start of a bike on purpose such as the clutch switch, kickstand switch etc.
I wish i hadnt wasted 9g on this bike. 2 strokes are better for 90% of us. We are being lied to by the industry.
My bike is a 2018 yz450f and when I push start button it just turns fuel pump on and nothing else fuses are good plugs are good and I can take a screw driver and bypass reLay and it will start but I replaced the relay and still same problem any answers??
Hey man did you ever figure out what the issue was with your bike? I have a 2018 yz450 and it is doing the exact same thing. I can actuate the starter button and i hear the fuel pump turn on but i get no click from the starter relay and no power to the starter motor. You would think the starter relay is the problem but i can take the relay off and make it actuate(click) when i put power to it. I also installed an OEM replacement starter relay and still doing the same thing. Anyone have an idea what could be going on? checked all fuses, starter button is good battery is good
@@jaysonweingartner7743 di you ever figure it out. I got a buddy same problem
Same problem over here?? Anybody have found the solution??
Same problem here anyone ever figure it out ?
Check this out, looks like the relay but he finds a wire problem. I hope at least it gives you a clue.
ua-cam.com/video/b1A4pgj24mo/v-deo.html
Hi guys my bike turns over, has spark but dose not fire. Fuel pump is working, just took it to the track and it turns over with nothing happening. Any ideas ?
Hey Tim, let me know if you found the problem, I’ve got the same thing with my 2019.
@@Sterjones bad fuel from BP fuel station, once I drained the fuel and put fuel in from another servo it worked no problem I have never see that before from fresh fuel not to fire.
My yamaha yz450f 2015 no spark :(
lol put start each other 😂
anyone else have an issue where it’s like. not one click but it sputters clicking?? battery works i think and starter works.
Yeah me but it's like its ready to start for 1/2 time's & then it starts clicking.But the weird stuff is when I put new battery it works for a week or two & then same shit.2006/December WRF450CC maybe cuz I don't use the bike every day & you know if you start the bike 1time every month or 2weeks battery get f**up
DRAMA DELTA ye. idk what to tell you. i’m too broke to buy a new battery but i’ve never seen it work ever so. i’ll lyk
Just change the carbon inside of old starter , save money instead of buying new starter.
I did the circle of almost from all categories.i start from motocross YZ/CR&RM only for a couple of years(RM )when they was making good bikes back at 1996/97.Then xt-550 the old one&TT-600 old one again&after years with those i jumped to v-max 1200,fzr-750,R-1,cbr-1100RR,cbr-900&really i forget many bikes the list is big.But i ride from12,5 yrs old&I'm 41 so i destroy many bike's&this bike at the video its only if they pay you to run like professional or if you are member of YAMAHA team or too rich&don't care about$$$okay its new generation but no way for someone to buy this bike for fun! He gonna be miserable from battery/aluminum problems every week if he goes fast through trials or free style in the forest its 1of the worst bikes even for not beginners.Give your$$$at YAMAHA ofcourse but before aluminium,except if you are a Motart boy&you make dirt bikes like circus with wrong rears wrong tires wrong philosophy 100%for a five short gear bike made for mountain or races;)
Why this exhaust?Why not kick start?Why aluminum?Why?You make good videos WHY bad bike?This is a bike for rich homeboys man.100% So why you put this lizard at your video YAMAHA told or pay you to put it there;)lol!
One of the best video but one of the worst YAMAHA bike.I search and find one of the best or better for a couple of weeks the second best YAMAHA WRF 450cc mine is 7 of December 2006 my opinion about the best model for many reasons is 2007 the first model or the second of 2007 we all know that every year we have two bikes right every six month.So if you want a GOOD dirt bike & not a look at me & my bad ass bike.Stay far away from aluminum dirt bikes & all those without kick start at the Same time with electric starter
You just wasted 10 minutes of people's time ,,, I get it start to finish . Hum 🤔 , why not go straight to the starter ??? If you have power on the exciter wire in crank . And full voltage on the main power wire ??? Needs a starter ! ! Fairly effin simple .
My yamaha yz450f 2015 no spark :(