Yamaha Workshop

Howdy Not long after getting the YBR125 the starter button has since stopped working, kick start is fine. Am not very experienced in kick diagnostics (but have car experience) what checks should I be doing? Thanks

heya peeps. been using the XJ for almost a month now without too many problems, sorted out my regulator, got my heated grips installed and all is now well, however there are a few little problems i would like to get sorted out. firstly, at around 5000rpm there is a noticeable increase in vibration, this goes away at around 6000rpm but the bars still vibrate at any revs and after 3-4 hours this makes my little finger go numb, is there a cause for this and how can i fix it? second, the bike has been stood for a bout a year before i had it and about 8 months after i bought it, i suspect the carbs may need balancing, would age cause them to go out of balance an…

hello am new here and if poss would like some help please i have a yz125 1989 and the cdi unit is broken i got one from a 1990 bike but it has a extra wire on it would it be poss to fit a 1990 stator to the 1989 bike keeping the old flywheel can anyone please help ??

Hi, I am currently a motorcycle engineering student. As an assignment I have dismantling an SZR/XT 660 engine to measure valve timings etc. Does Anyone know where I can find a service manual for the engine as it would be extremely usefull. Cheers

Wotcha.I've just got a 20 year old XJ600.Took her out the other morning,got onto the motorway and opened her up and she ran fine.A few miles went by and started losing power.Pulled up and she stopped,after a few attempts she fired back up and ran fine.This continued until I got off the M1,pulled up and let her cool,then she ran fine as if nothing happened.I'm suspecting fuel,help!!!! Hagar

hi could anyone tell me why my batterie goes flat when bike is running

Hello all, My '00 XJ600N has recently developed an annoying habit of refusing to start. The bike will be in neutral, light will show, side stand down and clutch lever pulled in; and when I go to start him the starter motor won't turn over and all I get in the oil light coming on. A mate suggested the clutch switch and he cleaned and lubricated it to get it going again. However this time the bike will not start again and I have opened up and cleaned the starter switch, cleaned and lubricated the clutch switch and tried to clean and lubricate the side stand switch, all with no success of getting him going. Does this sound like either the clutch or side stand swit…

Hi Guys, I'm back with another fault Thanks for all your help getting me back up and running in the past, I hope you can get me out of trouble AGAIN! I look the bike out at the weekend and when i put it back in the garage I noticed a tiny drip of coolant coming out of the bike, I found it to be coming from the water pump gasket, it was quite late on Saturday afternoon so knowing nowhere would be open to get a new gasket and wanting it back on the road for Sunday , i phoned my local Autopart place and got a sheet of gasket paper. I knocked up a new gasket and filled and bleed the system, everything went fine and i left it tick over for 20 min's to make sure t…

hi just a quickie lol porting and polishing. is it just taking out any lumps and bumps left buy the casting of the cylinder head? and then polishing it all up so the air/fuel mix flows freely through the inlet port? and what gains would you expect from it in say a 125 engine?

Hi guys I am new this this forum, I am glad to see you all out there. I just got a new (used) 1979 Chappy 49 cc moped. I have a billion questions. The bike is in good condition I want to charge the battery but I can't figure out how to remove it. Next the petals are not conected because the chain is missing and the kick starter petal is missing, how can I start this baby, can I push start it?

My CT 175 used to run great, after some time in storage, it starts up perfectly and will run ok with the choke on, but as soon as I push the choke in (to turn it off), it revvvs like a maniac and stalls. Two different people told me that it had to be a leak in the rubber boot, but I've checked and rechecked and don't think there's a leak there anywhere. Any other ideas?

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watch youtube mod 1 helps alote and its 15 pound do the trainin in ure own time if uve been on the road over a year via cbt and cant do these simple minouvers with practice u need to keep tryin as ive been on road over a year and practiced for 2 weeks on and off dont stress ure self and 3 hours of trainin every second day so it just comes naturlay or space it out upto u wat ever works but dont dont do it as u will loose the feel and it takes time after a week or so to get right back into it hope this info helps and contact for eney help chares hello i just passed my module 1 bike test were u told u need training well! u dont i was told it would cost 250 to get me throu…

Ok so my bike just suddenly stopped starting on the electric starter (no kick start). Started in the morning, I drove to work. After work it wouldn't start. It was my first time at work with the bike and a few people went out to look so I assumed they flooded it as I forgot to turn the fuel off. So I turned the fuel to off and hit the starter for a bit until the bike got a bit of life ( around 10 min later).. turned fuel on and it started very weak, then built up. I assumed the problem was flooding so drove home no problem, parked the bike up and ate dinner. Went to go out about an hour and half later. Same problem. I knew it wasn't flooded. But I turned fuel off …

I have a 78 dt175 thats been in the family since new. I dont think Dad had any overbores done. can someone tell me what the std piston size is so I can compare measurements? Thanks

my son has a dt 125. it starts fine but when he pulls the cluch and drops it in to gear it cuts out with the cluch lever still pulled in thers plenty of tention on the cable and its not stiking culd it be the cluch set up on the cluch baskit

Hello, I have a Yamaha Maxim 700 from 1986. I'm getting a high pitched noise, like the revving of a windup toy, when I am between 10 and 25 mph. It doesn't happen when idling or going slow, but it'll happen in any gear between 10 and 25 mph. I think it is coming from the engine, but I'm not sure. Any idea what this might be? James

Hello All, I have a general question about valve clearances. On a four cylinder engine you must rotate the crankshaft 360 degrees between measuring 'partner valves'. When I say 'partner valves' I mean something like Intake on Cyliner 1 and Intake on Cylinder 4. Or the exhaust on cylinder 2 and the intake on cylinder 3. My understanding is that the camshaft lobes are 180 degrees apart on these 'partner valves', does this mean that a 360 degree turn of the crankshaft corresponds to a 180 degree turn on the camshaft? This is a 4-stroke engine, btw. Also, how do you verify that you are at TDC of cylinder 1? Is it when the cylinder is at its highest position. …

I bought a 1995 yzf 750 i have a thermostat question my temp gauge starts at 60c (140 F)AND goes up to 100c (210 F)my fans both work they come on about 90c(190 F). When i am driving my bike it is always around the 140 F unless i am driving slow through town.Should my bike not run hoter then 140F once warmed up . It almosts seems like my thermstat is stuck open or is that how they run . THANKS

Hi all, new to this forum and looking for a bit of advice. Im picking up a yamaha sr 125, 1992 bike on saturday, its done 45000 miles and looks and sounds good for age etc. Just wondering if anyone can advice on any things that would be good to do when i get it just to ensure good running? like oil changes etc? any advice appreciated thanks