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Post by Barnie on Aug 23, 2013 18:42:08 GMT -6
Yoster, I have a JCL MP250 A with the 257 engine. I run the Pirelli SL26 130/60/13 on the front and the Pirelli Diablo 130/70/13 on rear. Iget them at the Motorcycle Super store and they are a little over $100.00 for both. The last 2 sets I have gotten have had free frt on orders over $99.00. They seem to be a very nice smooth running tire and a good ride. Like JR said the Chinese tires are bricks and most have a speed rating of only 62 mph which is not good on the 250's and up. Change em out, just put a very good tire back on. Barnie
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brake job
by: Barnie - Aug 3, 2013 6:00:44 GMT -6
Post by Barnie on Aug 3, 2013 6:00:44 GMT -6
I had the same exact problem on my rear master cylinder. One screw came out good and the other I did strip the Phillips head out. I just used a small metal chisel and small hammer on the edge of the screw and just tapped the chisel till it caught enough and it did loosen screw. I replaced with a new screw (it is metric in size) but the one I had was a bit to long so I just screwed a nut on it up tight against the head to shorten the thread part enough to work good. You may as a last resort drill the head off the existing screw enough to get cap off and take the rest of screw out with pliers. I did not anchor the screw real tite when I put them back in. You will notice a world of difference in how good the back brake will work after u change the fluid. Let us know how you do. Barnie
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Post by Barnie on Jul 28, 2013 5:37:10 GMT -6
These scooters look great but more work involved for maintenance is the down fall of having one with a full body on them. It's as much or more work to remove the body as the maintenance is. Once the body panels are off you got it made. Barnie
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Post by Barnie on Jul 27, 2013 18:29:21 GMT -6
Way to go, looks like a good buy. Are u still going to keep the MC54? Barnie
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Post by Barnie on Jul 25, 2013 19:31:54 GMT -6
The exhaust valve is more work to get to as you need to drop the belly pan to have room to work. Like Fflintstone said the intake is very easy to get to if you cut the bottom out of the battery tray leaving a small flange around it and then lay a small pc of plexiglass back in to hold battery. You can take the plastic vent cover off of the cvt case to access the nut on the variator to turn engine over buy hand with a socket to line up ur timing marks. Barnie
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brake job
by: Barnie - Jul 25, 2013 19:24:31 GMT -6
Post by Barnie on Jul 25, 2013 19:24:31 GMT -6
Snchiner, you are somewhat correct on fluid change. turn the handle bars so the top of master cylinder is level. Remove the 2 screws holding the top on. carefully remove the top and the rubber boot under the top. Be very careful to not spill any brake fluid as it will ruin the paint etc that it touches. Put a small short clear pc of hose on the brake bleader and put other end in a container. pump the lever several times and hold brake on and while you have brakes applied open the bleeder and the pressure will force the fluid out but don't release brake lever until u close the bleeder. Then repeat the process until you get new clear fluid running thru the hose. Pump the master cylinder down low but not below the 2 small holes u will see in the bottom of it or u will pump air in to that line. Just keep adding new fluid as you go. One u have clear fluid you are good to go. Top off master cylinder leaving it low enough that the boot will fit back in and put top on and you got it.Back brake takes longer as the hose is much longer. I usually have my wife work the lever and I do the bleeder. Just be sure to close the bleeder B-4 you let the lever back on each time to prevent air from being sucked back in. Let us know if you need more help or have a question. We will be glad to help u out. Barnie
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Post by Barnie on Jul 25, 2013 5:17:12 GMT -6
Quadrunner, I have a 2007 JCL MP 250 with the linhai 257 engine. For 5 years I have kept my valves set at .004 and .006 and have had no problems. But if you would like yours at .005 they do sell new sets at any auto parts store with that size. The set I have shows each blades in thousandths and millimeters. Barnie
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brake job
by: Barnie - Jul 24, 2013 19:19:10 GMT -6
Post by Barnie on Jul 24, 2013 19:19:10 GMT -6
The brake fluid that the Chinese use is of poor quality. If you have not already done so, replace the brake fluid in both the front and rear brakes. Put new dot3 or dot4 brake fluid in. you will have to bleed the brakes to do so but that is not a difficult job just make sure you get all the old fluid out and new in. Your brakes should work much better. Barnie
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Post by Barnie on Jul 24, 2013 19:09:23 GMT -6
You are correct about draining (lowest bottom screw on water pump) but the fastest way to get the most out of system is loosen radiator hose at its lowest point and the bottom screw on water pump but be very careful if u loosen the radiator hose as all the parts and fittings are very delicate and damage easily. Try the water pump screw 1st and if you don't get much coolant out of it, then u might consider the hose. Barnie
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Post by Barnie on Jul 24, 2013 19:04:40 GMT -6
Sncshriner, take a flashlite and shine thru the plastic grille in front of radiator, you will be able to see the coolant overflow tank and how much is in it there. After you drain old coolant and refill and flush and drain out that water, just close up the system and fill up with new coolant, when it looks like it is full at radiator cap, start the engine and let it idle with radiator cap OFF until it reaches normal operating temp, watch your guage so it doesn't overheat (in case the system has air in it) and after it warms up just top off the radiator and your good. The system is pressurized so the location of radiator cap should be ok. You can take an old turkey baster to suck out the old coolant from overflow tank and then fill it about 1/2 full or so. Barnie
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Post by Barnie on Jul 22, 2013 19:24:09 GMT -6
Grayfox, you know sometimes something electronic in your house acts up and it you unplug it for a while or overnite the next day its fine (I have a dishwasher like that). I don't know anything about your style scooter (have a JCL MP250a with linhai 257 engine) but with all your electronics on dash I would say you do have a small processor and it just may have been confused and had to be unplugged for a while. I think I would just ride it and see how it does. If it happens quite often then you may have a further problem. If not and it's ok, that's probably the cheapest repair you will ever make. let us know how it does. Barnie
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Post by Barnie on Jul 22, 2013 19:01:53 GMT -6
Richard, if you have a test lite,(one with a pointer and lite bulb and about a 3ft cord with alligator clip) hook the alligator clip to a good ground and touch the contacts with the pointer etc to see if and where you have current, be sure engine is running and the work the switch back and forth to see if you can get the test lite to illuminate. I use that type tester way more than the meter to trouble shoot. If you get current in and out of switch not moving it then you know your problem is after switch, if intermitant current then its the switch. Barnie
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Post by Barnie on Jul 21, 2013 17:49:18 GMT -6
Richard, my headlites come on when the engine starts, not until which means they run off the stator. When I switch to high beams the low beam stays on also. The best I can tell is there is a main wire comes from stator and splits under dash. One side goes straight to low beam element and the other goes thru the switch on handle bar to the hi beam element which means there could be a break after the y going to low but would leave the hi beam still light. I have 4 wires going to each headlite. Maybe JR or Alley will chime in as they are the experts in the wiring. Have u checked the actual buld sockets and wire leading to them with a test lite to see if there is or isn't power. I had trouble with my tail/stop lites and ended up replacing them.I figured vibration/shock just goofed up the sockets and bulbs. Been ok since. Barnie
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Post by Barnie on Jul 20, 2013 17:51:06 GMT -6
Let there be light!! Barnie
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Post by Barnie on Jul 17, 2013 19:46:24 GMT -6
Richard, like Fflintstone said, just take the 2 screws out and the switch will just split in 2 halves. After you clean it up dialetic grease is very good for any electrical contact or junction. Like JR said they are a very simple little rocker switch. Barnie
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