Author Topic: Mac 110 Hard to turn over  (Read 54 times)

0 Members and 0 Guests are viewing this topic.

Offline iamgrampa

  • pruner
  • *
  • Posts: 2
  • Karma: 0
Mac 110 Hard to turn over
« on: July 02, 2018, 06:43:26 pm »
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

Social Buttons


Online Al Smith

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2665
  • Karma: 150
Re: Mac 110 Hard to turn over
« Reply #1 on: July 02, 2018, 10:26:58 pm »
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 .
Informative Informative x 1 View List

Offline iamgrampa

  • pruner
  • *
  • Posts: 2
  • Karma: 0
Re: Mac 110 Hard to turn over
« Reply #2 on: July 03, 2018, 09:25:58 am »
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.

 

Related Topics

  Subject / Started by Replies Last post
9 Replies
240 Views
Last post March 20, 2013, 12:41:02 am
by 660magnum
14 Replies
387 Views
Last post October 30, 2013, 08:41:27 pm
by president
10 Replies
364 Views
Last post February 04, 2014, 03:24:19 pm
by president
6 Replies
481 Views
Last post May 30, 2014, 08:24:23 pm
by Billyram
4 Replies
94 Views
Last post December 03, 2014, 06:23:08 pm
by Berk
6 Replies
125 Views
Last post April 08, 2015, 11:39:15 am
by Randy
26 Replies
1040 Views
Last post August 16, 2016, 12:00:26 am
by mikehonda
1 Replies
113 Views
Last post June 06, 2017, 08:50:57 am
by Cut4fun .
13 Replies
247 Views
Last post October 13, 2017, 05:45:23 am
by mountainlake
0 Replies
41 Views
Last post February 10, 2018, 04:55:39 pm
by Cut4fun .