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Post by tvnacman on Feb 22, 2018 5:35:14 GMT -5
that feeler gauge is a .004mm
I use .004 inch
the intake valve look like its tight by your hand movement. It should rub but not really drag.
I have had to do valve adjustments 5 or 6 times before they became stable.
I suspect the jam nut was not tight enough.
You can run the engine with the valve cover off, you will need to catch the oil (it gets messy real fast) make sure the oil level is good.
The wires you show are for a side stand kill switch.
I know the valve tool is some coin, but it helps a lot.
John
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Post by toddmaples on Feb 22, 2018 7:43:49 GMT -5
that feeler gauge is a .004mm I use .004 inch the intake valve look like its tight by your hand movement. It should rub but not really drag. I have had to do valve adjustments 5 or 6 times before they became stable. I suspect the jam nut was not tight enough. You can run the engine with the valve cover off, you will need to catch the oil (it gets messy real fast) make sure the oil level is good. The wires you show are for a side stand kill switch. I know the valve tool is some coin, but it helps a lot. John Use a strip of aluminium from the next soda (or beer) can. Works just fine for the cheapskates like me. I can second the remark about doing it four or five times to get the valves stable, hence my earlier post saying redo the valve job. |
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Post by tvnacman on Feb 22, 2018 14:01:54 GMT -5
that feeler gauge is a .004mm I use .004 inch the intake valve look like its tight by your hand movement. It should rub but not really drag. I have had to do valve adjustments 5 or 6 times before they became stable. I suspect the jam nut was not tight enough. You can run the engine with the valve cover off, you will need to catch the oil (it gets messy real fast) make sure the oil level is good. The wires you show are for a side stand kill switch. I know the valve tool is some coin, but it helps a lot. John Use a strip of aluminium from the next soda (or beer) can. Works just fine for the cheapskates like me. I can second the remark about doing it four or five times to get the valves stable, hence my earlier post saying redo the valve job. I tried the soda can trick, it works. I remember a guy said use a beer can, then things arupted. I ment to 2nd your reply but missed it. John |
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Post by onewheeldrive on Feb 22, 2018 23:26:34 GMT -5
that feeler gauge is a .004mm I use .004 inch If you look closely it says .004 and .006 and it’s metric equivalents to the right of it. That means the .004 and .006 has to be inches. EDIT: Either way it should start even if the .004in gauge tip was a bit snug, as long as the engine was lined up properly. I bet a .003in gauge would slide right through the IN easily with probably no drag. I’ve been setting both of mine to about .003in for many years now, on probably 4 or 5 of the engines I’ve been through from 50-72cc. |
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Post by edub2689 on Feb 24, 2018 10:59:47 GMT -5
I tried adjusting the gauges yesterday, but my battery died. I let it charge while I went to work and just put it back in this morning. I wanted to work on the valves but I don't have a garage to work in and it started rain hard. After reinstalling the battery, and trying to start it. The engine actually seemed to start consistently, but it wont idle and cuts off after a few seconds. Does this narrow it down to a valve issue? Or does this still not rule out a gasket and/or piston issue?
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Post by chewbaca on Feb 24, 2018 13:43:46 GMT -5
it still sounds like you are going to need to pull the head, if your lucky you have an embossed steel gasket and can use it once more.
otherwise a new gasket is about five bucks.
a set of new valves is also about five bucks if you dont want to grind them yourself
I did mine in a hand drill against a slack harbor freight 30x1 belt sander
with worn out 600 grit sand paper, the equivalent of about 1000 grit
and before i get yelled at about the poor exploding baby orphan nuns
.......five bucks. You can afford to mess up
so clean the timing chain and cam sprocket so you can mark them
makes it easy to put back correctly
If you want I can go into more detail but its probably already on YouTube
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Post by ricardoguitars on Feb 26, 2018 9:51:57 GMT -5
Make sure you have the valves right then continue from there, it won't run right if the valves are not right.
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