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#Post#: 82832--------------------------------------------------
Mac 110 Hard to turn over
By: iamgrampa Date: July 2, 2018, 5:43 pm
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I have a Mac 110 that was bought new in the early 1970's. After
quite a bit of use it was retired in favour of a larger
Husqvarna 42CC. The little Mac has always been stored cool and
dry in its case. I recently decided to clean it up and get it
running again. Dismantled the saw, did a nice cleanup and
reassemble. The problem I am having is the saw will turn over
very easily with NO spark plug, but put a plug in and I can
hardly turn it over using the pull cord. The plug is the same
one that came out of the saw, a NGKBM6F. This plug does not
appear to use a gasket just has the bevelled seat. I have worked
on many types of small engines over the years but this problem
has got me baffled. Any help would be most appreciated.
Cheers
#Post#: 82833--------------------------------------------------
Re: Mac 110 Hard to turn over
By: Al Smith Date: July 2, 2018, 9:26 pm
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The mini's are bad about having the auto portion of the oiler
fail which will hydra lock the cylinder .I've tried to rebuild
the pumps with no success ..What I did was screw the pump piston
down so it does not move,block off the oil going to the pump
and just use the thumb oiler .
#Post#: 82834--------------------------------------------------
Re: Mac 110 Hard to turn over
By: iamgrampa Date: July 3, 2018, 8:25 am
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Thanks very much for the prompt reply. I will have a look at
that. I am going to have to leave the project for a few days,
leaving town for a short trip.
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