Yamaha Workshop

Hi folks I have a 94' SR125 and think my CDI has died. I have tried various tests to get to this conclusion. The one I have removed is a 94' ignitor unit with code 5HO-MO, with 2x 4 pin connectors Looking on the usual sites for used replacements I can only find the post 96 ones with code 3MW and 1 x 2 pin connector and 1 x 4 pin connector. Has anyone used one of these units as a replacement? I can probably work out the connections with the manual and circuit diagram, but thought I would ask before buying one. Thanks in advance

Hi this is my first post, I would like some advice or help i have a few ideas on what to do but i would like to know what you all think. I bought my tw125 04 model about a year ago now and have ran into a problem changing the front sproket this is my first bike (don't have a car) and i have had no troubles changing brakes, chains, rear sproket, oil and filters but this front sproket is getting on my nerves a bit, because obviously you will know if you own a tw125 the sproket cover you need to take off lets the oil out and i always change the oil rather than top it up so i try to avoid taking the sproket cover off but the first time i did it i got a shock because the sp…

is there default settings on mixture and idle screw, i can get the bike started takes a while but i have to keep the revs up. from what i heard mixture screw is all the way in and 2.5 turns out and no clue on idle, can anybody step me through on how to set it up just to get it running i have tuned carbs before but not on a 2 stroke and they have allways ran just fine tweaks any help would be a great help

Hi there! Been using this forum for a while to get advice on keeping my YBR up and running, and up until now it's been fine even in the cold etc. After failing an MOT due to exhaust blowing, thought it was time to swap for a new one. Unfortunately after trying for an hour to get the bolts out, they came out but the whole exhaust snapped at the weld, leaving the 10mm spout inside the engine. 2 hours with a dremel grinding disc later, and we were back to a fresh engine, and I bolted the new exhaust on and.. she turns over, but no life. The fuel ignites (exhaust gets hot, can hear the occasionally pop) and if I give it some throttle, the turning over gets noticeab…

In the process of removing head from '99 XJR1300sp for a mate who managed to strip a plug thread.Most of it came apart easy enough but the head is well and truly stuck to the barrels.I've removed the m6 studs at the front but the ones at the back aren't long enough to double up the nuts to lock them.Done the usual tapping with rubber mallet etc but i think any movement is going to disturb the base gasket.Are they usually this bad? i've done CBX1000 and GSX without having to resort to bigger hammers! Any ideas?

Just thought I'd share some part numbers in-case it might help anyone who searches. I'm rebuilding some BS36 carbs off a friend's XJ900 (88) and am working in Spain. Getting any Yamaha parts has proven to be a nightmare but I eventually managed to track down what I needed from a Suzuki main dealer - it took loads of cross referencing and I wasn't sure what would turn up once the dealer got the part numbers in that I'd asked for (not speaking Spanish doesn't help!) however was pleasantly surprised tonight to go and pick up all the bits I was needing. So I got the butterfly shaft seals (8 pieces) - 13651-51010 idle screw O-rings - 13295-29900 A fuel gauze from on …

Hello everyone, thanks for having a gander. Basic,y on my xt125 r I've been without a front brake for weeks and finally my master cylinders arrived. I replaced it and bled the system for well over and hour, still no pressure. So I kept filling the reserve up and with a tube on the bleed nipple I left it open and let gravity do its thing, still no bubbles just a constant flow. Again tried bleeding, no luck. So I wacked the calliper off and removed the pads, pushed the slave cylinder to the back, bled again, I saw that the slave cylinder is moving perfectly as I bleed it, tried it several times and it's simply working. I know how hydraulics work I'm studying engineering …

long story short, bike got stolen by kids ripped the wiring out, took it to a garage to get sorted and they replaced the barrel, this barrel i have on the bike the thieves was ever so nice to replace the ignition barrel but looks like they have wired it up wrong barrell harness barrel side harness loom side red = red = red orange = brown = brown grey = blue = blue black brown = yellow = blue yellow does any one know t…

Pissf*cking shittery! Returning from a long ride today, the draggie breaks down. No transmition to the rear wheel. Gears all work, but letting the clutch out only results in nasty grinding noises coming from either the rear hub, or where the shaft goes into the final drive u-joint thingy. Hard to tell as I broke down on the south circular and it was bloody noisy. I suspect the 4 hour wait for the recovery truck was just the beginning of my woes... Anybody have any tips, (or spare parts)?

Hi guys. I'm new to rebuilding bikes but I have done a few cars, so I have an idea of what I need to do. The bike - the bike is a Yamaha SR125 1983 it has less than 3000 miles on it. Reason for this is because it was only on the road until 1994 where it sat in a garden without a cover until 2 weeks ago. It has been started and run off-road a few times but was treated bad. I know the engine and chasis is solid still. Since picking it up 2 weeks ago she hasn't started, I've tried jumping it and even bumping itbut nothing.its like there is no power to Ny of the electrics. I have no workshop manual or anything so I'm hoping some of you great chaps may be able to help to…

I have one 125 Virago and one 250 Virago. Now this spring when trying to start up I got problems. When I have choke on and no gas the motor start nice and idle fine but as soon as I open trottlel, even Little, motor dies. Same problem for both bikes. The 250 motor has only gone 1200 km and is untouched. The 125 has made 9000 km and I had to take carburator apart as the choke slida was stuck. I have fixed that and put it all together. Will start but do not accept open trottle. Happy for any tips that help me.

Hi all hope someone can help me out here. I need to get a new battery as mine has died completely - can't hold a charge for more than a couple of miles. My problem is is that I need my bike working on Monday morning so have to get a battery tomorrow and cannot find anywhere with the correct battery in stock. Ideally I need 40A and 7Ah, the closest I can find is a 45A / 4Ah. It is my understanding that the Ah is how long it will hold a charge for. If this is right, would it be that big a deal on a '94 SR125 which is used daily and only basic electrics (lights etc) in use?

Hi all. Im kind of new to riding only been 10 months. I got this Yamaha XT125R as my first bike. Basically everytime it starts up it will not tick over and will cut out every time i go near the throttle. Just wondering is this a job i can do myself or would i need to take it to a garage. Can anyone recommend anything? Thank you. Jayce

Hi Everyone So this problems has stumped alot of people in the past few weeks but if anyoine is gonna know it would be on here So here goes , bare with me on this So my dad has had his 4jh since about november , he swapped his triumph trophy 1200 for the FZR as the triumph was too heavy for him , obviously he didnt try to red line in straight away so we didnt find this problem until recently when the weather got nice and he got to know the bike so the Problem : it refuses to rev past 7000 rpm at all , when you get to 7k it will sit there as if it was on the red line , the weird this is tho , it will rev perfectly clean to the red line when its on the side stand th…

Howzit going guys. I recently bought myself an yamaha tzr 125 2RK and whenever I start it it idles fine and then all of the sudden the revs drop and the bike just cuts out. Also when I want to pull away with the bike the bike sounds like it wants to cut out and then jerks a little or it will just cut out, but yet starts perfectly after the cut out. Another thing when I switch the bike off and close the tap the float bowl petrol runs out. Please help on this one. Thanx [emoji20]

hi all, just bought my first big bike, bought as a project til i pass my test. having problems starting her up, shes turning over but not firing, so thinking no spark, can any one give me some pointers to check please. also noticed this wire stareing at me, but cant see where it bolts too seems to go from here, where it says 32. and yes i know the brake pedal is bent

So I bought myself a 2005 Yamaha TZR50 And as usual it has the speedometer problem , but my problem is a bit different. When i start the bike the speedometer reads 0MPH and after the bike warms up the speedometer says random numbers upto 50MPH eg.8,32,50,42,1,21 When I rev the bike in neutral it increases the speed eg.10,20,30. Any ideas? THANKS.

Hello all i would like some advice on my wr125. Would it be worth me changing my air filter for a non standard. So something like pipe and cone. Sent from my iPhone using Tapatalk

Hi i am new to this so please bear with me,i am purchasing a 2002 yamaha tdm 900 which has been standing for 2 years the mileage is 32000,it did run initially and then stopped and would not run again even the starter would not turn over,i would be grateful for any hints and ideas you may have to lead me in the right direction,many thanks.

2010 XJ6 F. Hi, the front right indicator is not working. The rear right indicator works. The bulbs are all ok.The green light light in the headlamp flashes faster than normal when turning right. Left indicator works fine front and rear. Any ideas will be much appreciated. Have a great Bank holiday.