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Post by 4950cycle on Apr 22, 2013 10:58:12 GMT -5
Hmmm... They claim you can do the exhaust valve with the belly pan partially in the way (I can't seem to). I made a trap door to get the belly pan completely out of the way of an exhaust valve adjustment. , Its already tedious as to adjust the exhaust valve on a Linhia. I don't know how they do it tripping over the hanging in the way bellypan too ?
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Post by 4950cycle on Apr 22, 2013 9:23:35 GMT -5
In depth thread on two stroke oil pumps. I was one of the ones that was told not to trust them and use premix. If i'd known more about them things might have been different. Hmm... Not many two strokes left these days. Seems the EPA has convinced us the 4 strokes are better for everything. Not so, Where a powerplant has to be light and powerful , A 2 stroke can't be out gunned. The now discontinued Honda CR 500 2 stroke dirtbike will never be outgunned by any high tech (KTM) exotic 4 stroke of same or close displacement. I think they still race 450 4 stroke dirt bikes against "250" 2 strokes to make the playing field more even.
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Post by 4950cycle on Apr 21, 2013 22:25:58 GMT -5
This is the belly pan after being cut and forward part fastened .See that screw securing the forward bellypan to that silver lower bodypanel ? The screw in each side is not absolutely necessary. It just keeps things from rattling when riding. Now, When my girlfriend comes to me and says her scooter is stalling when she comes to a stoplight I no longer get a sick feeling in my stomach ! I know I will most likely be able to go in and adjust the exhaust valve with as little effort as can be expected And the scoot will idle fine again. Translation , Does'nt turn into an all week project. ;D I know, I know. Some of you claim you do this job, adjustment in 38 seconds or so. I'm just saying this guy can't. Attachments:
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Post by 4950cycle on Apr 21, 2013 22:24:50 GMT -5
Here is the trap door that I created out of the piece I cut from the bellypan. See the 2 little sheetmettle tabs I screwed to the belly pan . The tabs slide into two slots that help keep it in place. the two existing bolts fasten the door in the rear. Attachments:
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Post by 4950cycle on Apr 21, 2013 22:20:03 GMT -5
Here are some before and after pictures of my panel installment project. This is picture of the final product. Attachments:
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Post by 4950cycle on Apr 21, 2013 18:29:17 GMT -5
Did you try a sharp rap or two with a hammer on the edge of the starter clutch to see if it would free it ? I replaced mine in a 257cc Linhia powered Honda Reflex clone. The new one was $80 part only. As soon as I took the old one out it (the old starter clutch) started working correctly and never screwed up since. Its almost like it was in a temporary bind and I jumped the gun replacing it. I wish I would have tried knocking the heck out of it with a bull pin through the timing hole. Instead I ripped it all apart to put a new one in.
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Post by 4950cycle on Apr 21, 2013 18:10:11 GMT -5
The Honda Helix is ugly as . He must be talking about a Honda Reflex clone .
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Post by 4950cycle on Apr 21, 2013 15:38:46 GMT -5
I agree, I had 78 Kaw 750 B model air cooled twin that would lean pop here and there, Did'nt run right when it was cold, Run Hot. Could not fix this problem with those twin Mikunis (no air leaks) till I drilled the main jet one number drill bigger than stock hole in jet. It drew just a pinch more fuel from the float bowls and the bike ran great from then on. I need to get those pics of Scoot belly pan up.
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Post by 4950cycle on Apr 21, 2013 12:00:14 GMT -5
Hi folks, I have had to keep a 2007 JCL MP 250 A running for my girlfriend. I have had more issues than I should have with this bike. But, what seems to be a reoccurring issue with these 257cc Linhia powerplants is chronic stalling do to the exhaust valves persistant loss of clearance more often than should be. That being said, I just had to find an easier /quicker way to alieviate this bugaboo. The prescribed procedure is just to time consuming and tedious for this ADHD guy to have to do so often. So, I use these shortcuts to get her back on the road without tons of fuss and muss. First, I focus on the exhaust valve only instead of both valves. Its the main culprit for the stalling between the two of them. Its the one that gets SUPER heated over & over again on every hot exhaust stroke and distorts (gets longer). THE hottest part of an ICE (internal combustion engine) is the exhaust valve. Its a wonder they don't fail so much more actually. Anyway, First I cut the belly pan about an inch and a half or so in front of the rear vents in said belly pan. Right behind a little devider you will see on the inside of it. I also drill a hole in each side at the very bottom of the bodywork to get to the rear belly pan bolts.If you make this area of the belly pan removable this will give you access to the exhaust valve cover, the exhaust pipe bolts, the vaccum fuel pump and maybe even the ever elusive spark plug ? (can't remember) . This is a lot of gain for this hard to work on model. I also gambled and tried something that I was a little leery to do. I lay the scooter down right on the earth (not slab or asphalt) with a big peace of cardbaurd to protect the paint. With something a foot and a half or so off the ground to lay the handle bar on to help support the weight of the scooter. Hey, when you don't have a $1500 lift this gives you much easier bottom access. Scoot didn't seem to leak any fuel or oil to speak of. And also ran fine upon the completion of the task. With ZERO stalling. ;D I will post some pics shortly. Sorry for TMI. Just trying to give back.
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Florida
by: 4950cycle - Apr 20, 2013 21:13:06 GMT -5
Post by 4950cycle on Apr 20, 2013 21:13:06 GMT -5
Originally from Fort Lauderdale, But now way up here in Dunnellon, FL. . About 20 or so miles west of Ocala (North central FL.) . To many Harleys around here with people dressed like pirates on them !
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Post by 4950cycle on Apr 19, 2013 21:26:24 GMT -5
Just did my exhaust valve and JCL 250 Linhia took off like a champ. Thanks for all the suggestions and direction Scoot Boyz. Runs great hot or cold now with Zero stalling problem .
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Post by 4950cycle on Apr 19, 2013 21:23:38 GMT -5
Just did my exhaust valve and JCL 250 Linhia took off like a champ. Thanks for all the suggestions and direction Scoot Boyz. Runs great hot or cold now.
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Post by 4950cycle on Apr 19, 2013 7:46:44 GMT -5
I know you usually ride the 150ccs from what I think I know anyway ? Do you know If I could remove this extra complication of an evap system from my girls JCL Linhia 250 the same way Ally ?
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Post by 4950cycle on Apr 18, 2013 15:14:30 GMT -5
Gotta love ya JR. Hey everyone ! Read what he is saying above and between the pics. Don't look at the pics and assume you know what he is talking about like I did the first time. This info is the dope. I know your correct here on all counts JR because of what I know about 4 stroke motors. This is the kind of shortcuts I was looking for. And my exhaust valve will be even easier because I made a trap door. I know you said you don't have to. I just don't like wrestling with the belly pan in my way. Thank for sharing your own research and development JR. PS And your wondering nat almost always tricks me.
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Post by 4950cycle on Apr 18, 2013 11:14:39 GMT -5
Rockynv, Please check the 130 mpg on the 850. 50cc scoots don't get that good a fuel milage. D8
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