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Chain Saw Collectors Vintage chainsaws and other air cooled gas engine saws, collecting and restoring.

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Sachs Dolmar Ignition Woes


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  #51  
Old 08-24-2017, 05:01:59 AM
Northmen Northmen is offline
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Default Re: Sachs Dolmar ignition woes

Thanks for your reaction I hope i can fix it with this information
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  #52  
Old 09-16-2017, 10:32:08 AM
Northmen Northmen is offline
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Default Re: Sachs Dolmar ignition woes

Hey, so I both a dial indicator an a timing light. It was quite hard to get the piston on 2 mm btdc because you can only put the dial indicator in a certain decrease on the piston.
I used the timing light and everything worked, I let it turn by the electric drill.
And I used starting gas and fuel, but nothing again he don't want to work for some reason!
I am 99% sure thats not the ball bearings. And it is so weird that when the saw is on time now and I put fuel down the throat of the carb that it don't start! There is now life at al! What else can it be?
Thanks for the reply!
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  #53  
Old 09-16-2017, 10:33:45 AM
bigGURN bigGURN is offline
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Default Re: Sachs Dolmar ignition woes

Have you checked compression? Or done as Andrew recommend above?
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  #54  
Old 09-17-2017, 09:29:31 AM
Northmen Northmen is offline
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Default Re: Sachs Dolmar ignition woes

No i didnt do that but he don't give any life at all that's what I think is so weird!
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  #55  
Old 09-17-2017, 09:36:05 AM
bigGURN bigGURN is offline
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Default Re: Sachs Dolmar ignition woes

If compression is inadequate to compre the fuel/air charge, you'll have no life as there is nothing to ignite.
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  #56  
Old 09-18-2017, 09:29:21 AM
Northmen Northmen is offline
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Default Re: Sachs Dolmar Ignition Woes

Oke and how can I check the compression? I read somewhere that's if it is good that it is around 100/125 psi? Is that right?
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  #57  
Old 09-18-2017, 10:39:20 AM
bigGURN bigGURN is offline
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Default Re: Sachs Dolmar Ignition Woes

Really 125 is minimum for a nice, easy starting and running saw. You'll need a compression tester to check compression.
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  #58  
Old 09-19-2017, 02:46:04 AM
Northmen Northmen is offline
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Default Re: Sachs Dolmar Ignition Woes

Thanks I will look for that and try it out, keep you updated thanks for helping
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  #59  
Old 11-06-2017, 12:51:48 PM
Northmen Northmen is offline
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Default Re: Sachs Dolmar Ignition Woes

So I checkt the compression and it is 180psi so that is really good. I was thinking is it possible that the plug, when it is in the cylinder that it don't make earth? So that it then not fires and when it is out and keep it against the outside of the cylinder that it then makes good contact? So no the compression is good what else can it be? Because there is still no live at all!
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  #60  
Old 11-07-2017, 04:00:42 PM
Northmen Northmen is offline
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Default Re: Sachs Dolmar Ignition Woes

I can buy a ignition module from a dolmar 152 but dus it fit on my 153? Because I still think it's the timing ore something like that.
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