A friend of mine replaced the oil in my bike but filled it too full. I bought it second hand and the previous owner obviously did not change the oil regularly and so the sight glass is pretty difficult to see through. I have two questions...
1. how exactly do I remove the oil from the oil tank? I cant see what to do...
2. Is there a way of cleaning the sight glass?
please help. This is my first bike and I'm still learning. I don't know very much yet.
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Re: how to remove oil from a yamaha SR125
Not too hard to get the excess oil out. Easiest way is to tip the bike on its side with the oil fill bung out, and drain off some of the excess via there. The only other way to do it is drop the oil entirely and start again with fresh oil(dont reuse it even though it is new). Gets really messy trying to put the sump drain bung back in with oil pouring everywhere. You also stand the risk of getting dirt into the engine, so i Dont recommend draining off the excess from underneath. Dont run the bike with excess oil. The site glass is fitted from the inside of the casing, and is rather hard to clean. They get dirty from a build up of clutch friction material settling on the glass. You have to strip the motor down completely to do that. Hope that helps you solve your problem. Happy to answer any questions you may have. Riding bikes is so much fun...cept when it rains!!
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10W40 semi synthetic is best the quantity is normally shown on the engine cover on Yams. My little yam and my Suzi SV have oil level windows in the right side engine cover. These show marks for low and full. Open the oil filler make sure the bike is upright and fill to the full mark,.start the bike run for a little while and recheck/refill as required. Keep checking over a few days just to make sure.
Most bikes 500cc and over have an oil capacity of approx. 3 to 4 liters.
My friend Dan and I have been working on vintage Yamaha's for over 10 years now. We know a good bit about different dt model's. We are not certified mechanics, so everything we know is from years of experience, and older generation riders experiences. My tip is about the Oil Pump that injects two stroke oil when you give it throttle. Last year i bought a near mint condition, 1974 Yamaha dt360. When overhauling the bike, my long time friend and riding partner Dan who owns about 5 different yamaha's, models from the late 60's the late 70's, suggested we disconnect the oil pump (clutch side) and drain all the oil out and pre mix the gas. Reasoning for this is he has heard numerous stories over the years about the pumps either seizing, or when you lay the bike over air bubbles can form which will then increase chances of the system not functioning properly causing the motor to seize. I kept mine installed on the bike, but disconnected the hose on the inside of the cover and drained all the old oil out, now I pre mix the gas. Thanks for reading.
check the drain hole isnt blocked with silt , poke it ! also i think your over filling the engine with oil , does it have a dip stick on the filler cap or is there a sight glass on the side of the engine case on the same side as the filler ?
my oil light also comes on after riding my bike, I have filled up the oil tank with castrol 2t oil but the light still comes up. The previous owner never had a problem with it.I washed the bike literally everywhere as it wasn't looked after and i think it is electrical problem as some some water may of got the electrical circuits. Have you washed yours or has it randomly just come on?
if you change the leaver to a flater one you may fine that the cluch dont fully disengage and as its made of cheep aluminium it may not bend easly without braking unless you get it hot the only thing i can think of is let the cluch cable off a bit it will have to much slack on it but the leaver will come in a bit you could still pack out the slack on the handel bars if there is no ajuster on the cable you will need to cut away a bit of the outer cable to give you the slack,,
but if this dont work it will mean you need a new cable or fit in an ajuster
Your best bet to address these questions and others you are going to have in the future, is to stop by your local Yamaha dealer and if you do not have one purchase the owners manual for your bike. It won't cost much and it will provide you with lots of information about your bike and scheduled maintance. Hope this helps.
Make sure it is clean, it runs down and bolts to the top right hand side of the crank case.
Sometimes what happens is, that lead gets grime on it, oil or corrosion.. and it doesn't make good contact. The lights, spark ETC load the crank case and frame full of DC.. when you shut the bike off the dc cant flow through the starter so it won't turn over.
after a while the dc trickles out it will let the bike start again.
Hope thats it and it works for you, good luck!!
P.S. how is he liking his ace?? Awsome bike, I have had mine since 1999, and it not about to go anywhere!!