Craftsman 42cc chainsaw - Compression too low?
dougand3
12 years ago
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loger_gw
12 years agodougand3
12 years agoRelated Discussions
Information on Craftsman Chainsaw 358.354830
Comments (35)My two Old Poulan/Craftsman started and ran as I expected. With my arms vs My Son-In-Law’s (w/o going to ER Yet) LOL! The .MPG files of the saws running w/n attach. 1. I ran both 5-10 Min with fresh Stabil treated fuel. Normally, I “would have” left some of the treated fuel in the saws for a year as in the past. The old fuel looked so bad that I felt it might be better to Run Them Bone Dry. *** Opinions! Bad IMO from evaporating (if fuel will) since it looked more like oil than fuel. 2. ** I saw a Craftsman attachment related to Electric Starting past pull start Engines. I’ll have to go back to see if it was related to Old Equipment or will adapt. I feel it was and I’ll try to attach it to get some opinions X Safety and Realistic. I feel it was to prevent Kickbacks. If I would try one, it would be w/o the bar and chain to prime up a saw that had been sitting a year as these. Plus, I have a complete retired engine as the green one + spare parts. Electric Starting Adapter at the Link below: http://www.sears.com/craftsman-power-bit-start-trade/p-07185952000P...See Moredifficult chainsaw
Comments (7)NevadaWalrus is on the right track, if any of you non-believers live in Central New York or want to pay to ship your junk to me I will prove it on digital video. He just didn`t go far enough in explaining his position. Tooth symmetry is important but what is even more important is that each tooth takes the same bite as the other teeth. It is very likely and common that the teeth on both sides of a chain can appear to have angular symmetry but if the lengths are even slightly different, one side will have more depth gauge clearance than the other, meaning that one side is taking bigger bites. For a graphic demonstration of what happens try this. Stand up, take 10 sequential steps with both feet but take 1 foot long strides with your left foot and 1 1/2 ft strides with your right, squaring your feet after each step so they are parallel, can you walk in a straight line? Let the length of your strides represent the thickness of the chips you are producing and you should see how they relate. Unfortunately the most commonly available depth gauge reducing guides average over several teeth and only serve to perpetuate this problem if tooth length or symmetry is not exact. An unevenly worn bar can also be the cause of curved cutting but even that is a sypmtom of improper sharpening. The bar being too thin is not the cause. Centripetal force is going to cause the chain to want to stay in orbital motion unless overwhelming forces acting on the chain cause it to do otherwise. A perfectly balanced mechanism is not going to have significant harmonics and the bars do not sway in the breeze on their own. Bars on some racing chainsaws are thin enough to almost sway in the breeze and they do not bind, just like crosscut saws don`t bind unless force is applied counter to the intended plane of motion and their bodies are far deeper than any chainsaw bar. Another indicator of improperly sharpened chain is the apparent high stretch rate. Chain doesn`t actually stretch nearly as much as it wears but a sharp chain should and will go for many hours of use without requiring retensioning. A chain requiring frequent retensioning is almost always sharpened poorly in some way....See Morebriggs & stratton won't start too much compression
Comments (52)for most people its valve adjust but for a select few its the engine design itself. the piston gets lubed by the engine splashing oil. if you dont change the oil yearly and are not using the correct weight oil, the top side of the piston and occasionally the head also will create tollerances so tight even the compression release wont be enough for the starter to push thru. usually i sugesst pulling the engine apart and cleaning the piston, valves, rings, and valve head. get then super clean abd put it back together. keep up on the maintence and it should run fine. also check the seloniod, they do go bad and it takes all that CCA to get these engines spinning...See Morechainsaw craftsman 2-cycle motor problem
Comments (7)Message: I have a chain saw model #358-350600 Craftsman 18 in. / 42cc bought the saw about 2002 used it satisfactorily for some time and it does not have many hours on it, however in cutings some trees in the yard in about 2008 it quit for no apparent reason an it has not cranked since, I have had local shops to work on it, fuel lines have been redone,carb. replaced with new, it has good spark (blue) still not even a pop using starter fluid. I have search the web for help and I see some others having the same problem as myself. I went to the Sears shop but for them to check it out was almost as much as a new saw and I noticed while I was there they had lots of the 18in 42cc saw on the shelf that had been reconditioned, but I still can't find where Sears is giving us a solution for this problem and why so many are having the( will not crank problem). Does it have a printed circuit board that we can't find. I can buy a new saw but that does not fix this one. Can you give me some help, I have a problem with a motor that looks as good as this will not run and it is still in the original box. Thanks Herman Hill...See Morercmoser
12 years agodougand3
12 years agoJoeZep
10 years ago
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