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Tool Talk Discussion Forum

Mall 2MG chain saw

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Boney2

09-16-2006 05:34:35




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This old girl is in nice shape...but it will not fire off. I am pretty sure it is the coil. This saw dates back to the late 50's and has a 3 foot blade on it..with no handle on the end, to make it a 2 man saw..weighs about 60#, calories look out. Sure could use a coil for it,,thanks




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jeffcat

09-16-2006 22:57:32




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 Re: Mall 2MG chain saw in reply to Boney2, 09-16-2006 05:34:35  
I have several Mall saws and most of the time it is NOT the coil. If you know how to work on old engines then I can give you some tips. If you are a novice DON"T mess with it cause you will more than likely bust it. These saws have a couple of types of magnetos. One of mine has a poulon. They were made in Mass. many years ago. Another is wico. You need to take the back "recoil" of the saw off with I think three screws. You now see the "flywheel". You need a three bolt sterring wheel puller to get it off. Inside you will find the coil-points-and condenser. Run a piece of plain old sheet paper through the points and that will clean off any corrosion. Check with a digital meter when open and closed. With the points open the meter set to OHMs. you will get a slow charge up of the condensor cause the readings will get higher and higher. This is not the way to check one if it has hot or running problems but it is a place to start. If you put the flywheel back on with the plug out and give it a clockwise spin I bet you will get a spark. These mags are not very hot and at a slow spin the spark is very weak. I needed to replace a condenser and used one for a McCulloch model #35 saw. It works great.
Hope this helped you. Jeffcat PS let us konw

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Boney2

09-17-2006 18:20:11




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 Re: Mall 2MG chain saw in reply to jeffcat, 09-16-2006 22:57:32  
Jeffcat...You diffently know more about these chain saws than I do. I sure would like to get this old girl going. It has a weak spark when turned with a drill. I took the flywheel off and got to the points..the coating on the coil is cracked..it does have a weak spark when turned with a drill. I put a new spark plug in and can not get a spark out. If you have any more advice I sure would appreciate it. You have been a great help. and I thank you.

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jeffcat

09-19-2006 14:55:46




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 Re: Mall 2MG chain saw in reply to Boney2, 09-17-2006 18:20:11  
I would go with a new plug and condenser. Those champion one pull plugs have a spark gap in them and are pretty hot. If I remember correctly the point gap is .23. There are some old saw shops that have parts but you have a LONG search. Condensers will puke out under load so I would change that. If you get any spark I would not say the coil is bad. You said you spun the engine with the plug out and got spark? I hope you use a drill and NOT an impack type tool! I found that if you mess with a 2cy for tooooo long you can vapor lock the crankcase. Remove the plug and keep the throttle open. Spin the engine over for a couple of minutes with an air drill or electric drill to dry out the crank case. Remember all of your air mixes go through the crank case. Let us know. Jeffcat

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havvey

09-16-2006 09:47:16




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 Re: Mall 2MG chain saw in reply to Boney2, 09-16-2006 05:34:35  
try a site called arborist site .com and ebay malls were popular



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