Post by richard on Aug 24, 2014 16:21:42 GMT -5
I have been riding my 1980 xs650 lately because I was starting to rack up miles on my 1971. The 71 is my favorite bike, but I'm at 9000 miles on it now and I would kind of like to keep it looking new. Anyway, first thing I did on the 1980 when I brought it home was change the oil. I ended up draining the oil through the plug that is under the sump screen because the crank case drain plug was rounded off. I tried every 27mm thing I had and it just wouldn't budge with the engine hot or cold, so I gave up for the time being. Below is a pic of the plug.
Since then I have bought a new plug, but have yet to install it. So I was wondered if this isn't some kind of special plug for stripped threads or something? Have you seen one like this before? It would be nice to know before I get a flank drive on it or a chisel on the sides and go crazy getting it out.
This coming week I'm going to pull the sump screen to check it for debris. and inspect the oil pump for the same. I rode this bike on its first 100 mile ride since I bought it yesterday. I ran very well. After the return, I stopped to fuel up, when I restarted the engine the valve train sounded starved for oil, which was weird since it sounded perfect before I shut it off to fill it. The only thing I could think of was there was a rapid dip at the entrance to the Chevron station that could have sloshed the oil in the crank case that might have caused the problem, but it seemed unlikely. After checking the compression, timing mark and the carb boots for leaks. I rode the bike today about 20 miles and it sounds fine now. The oil has 150 miles on it and I hate to waste oil, but I am going to have to look at those screens, just to be sure. Neutral is hard to find when it's hot and at idle so I'm going to sort that out too at the same time. I cleaned the left side cover oil filter when I changed the oil at the first oil change. It had only a few specks on it, which to me looked normal. Fromm the look of the sump cover and bolts I don't think the sump screen has ever been off. The bike has 17,000 mile on it, but it's an about 80 MPH speedo, so who knows.
OK the oil filter had nothing in it, but I found sump screen torn so it will need to be changed.
Ok I replaced the sump screen with a new one from mike's. I took apart the oil pump and check it for debris, there was none. I also checked the wear on the oil pump inner and outer rotor and found nothing wrong with it. . I blew down the oil passages to the top end oil feed tube and from the bottom sump suction to the oil pump inlet. At the same time I checked the clutch basket and replaced the clutch thrust bearing and washer to make it easier to find neutral. I'm going to reset the valves on the top end, but at this point I'm thinking I may have just sloshed the oil in the crank case enough to stave it out for oil temporarily. I can't think of anything else. That engine only holds 2500 cc of oil which is about 2 1/2 guarts of oil that is not a whole lot and it wouldn't take much to slosh that. I'm going to see if I can find a way to make something to give my engine a little more oil capacity when I get the time
Since then I have bought a new plug, but have yet to install it. So I was wondered if this isn't some kind of special plug for stripped threads or something? Have you seen one like this before? It would be nice to know before I get a flank drive on it or a chisel on the sides and go crazy getting it out.
This coming week I'm going to pull the sump screen to check it for debris. and inspect the oil pump for the same. I rode this bike on its first 100 mile ride since I bought it yesterday. I ran very well. After the return, I stopped to fuel up, when I restarted the engine the valve train sounded starved for oil, which was weird since it sounded perfect before I shut it off to fill it. The only thing I could think of was there was a rapid dip at the entrance to the Chevron station that could have sloshed the oil in the crank case that might have caused the problem, but it seemed unlikely. After checking the compression, timing mark and the carb boots for leaks. I rode the bike today about 20 miles and it sounds fine now. The oil has 150 miles on it and I hate to waste oil, but I am going to have to look at those screens, just to be sure. Neutral is hard to find when it's hot and at idle so I'm going to sort that out too at the same time. I cleaned the left side cover oil filter when I changed the oil at the first oil change. It had only a few specks on it, which to me looked normal. Fromm the look of the sump cover and bolts I don't think the sump screen has ever been off. The bike has 17,000 mile on it, but it's an about 80 MPH speedo, so who knows.
OK the oil filter had nothing in it, but I found sump screen torn so it will need to be changed.
Ok I replaced the sump screen with a new one from mike's. I took apart the oil pump and check it for debris, there was none. I also checked the wear on the oil pump inner and outer rotor and found nothing wrong with it. . I blew down the oil passages to the top end oil feed tube and from the bottom sump suction to the oil pump inlet. At the same time I checked the clutch basket and replaced the clutch thrust bearing and washer to make it easier to find neutral. I'm going to reset the valves on the top end, but at this point I'm thinking I may have just sloshed the oil in the crank case enough to stave it out for oil temporarily. I can't think of anything else. That engine only holds 2500 cc of oil which is about 2 1/2 guarts of oil that is not a whole lot and it wouldn't take much to slosh that. I'm going to see if I can find a way to make something to give my engine a little more oil capacity when I get the time