Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Dolmar Makita => Topic started by: 3000 FPS on October 31, 2013, 03:19:29 pm

Title: Dolmar 112
Post by: 3000 FPS on October 31, 2013, 03:19:29 pm
This is a saw that I have had for awhile, but never really got it out to cut some fire wood with.    So I got it out the other day and used it.    The saw started leaking fuel when set side ways and I noticed that the plug in the top of the fuel tank where the fuel line and vent come through was loose.   I pushed it back in but it did not seem to have a tight fit.   So I put a little yamabond on it and let sit for 24 hours and fixed.   Sits nice and tight no more leaking.   

The saws actually cuts ok for its age.   It is not high reving and is not a big saw by any means but I like it, and it will do very well for my purposes.   

(http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=2476.0;attach=4200;image)   
(http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=2476.0;attach=4202;image)
Title: Re: Dolmar 112
Post by: 660magnum on October 31, 2013, 03:35:42 pm
It's all Dolmar
Title: Re: Dolmar 112
Post by: RoyM on October 31, 2013, 10:35:04 pm
They are not a high revving saw but lots of torque. I worked in an S-D shop in the eighties, rugged saws if a bit heavy and reliable. I never had to worry about come backs.
Title: Re: Dolmar 112
Post by: bungalow on November 01, 2013, 12:41:54 pm
nice saw, indestructable 
Title: Re: Dolmar 112
Post by: Warped5 on February 26, 2014, 01:22:38 pm
Hi Roger - Just got one of these myself.  Has had the 'spa treatment' from Mastermind.  Hopefully, I'll be able to take it out this weekend for some test runs.  Chain is loose because I'm in the process of adding a spike to the cover.

(http://i1018.photobucket.com/albums/af305/Warped5/Sachs%20Dolmar%20112/GEDC2082_zps235d35e4.jpg) (http://s1018.photobucket.com/user/Warped5/media/Sachs%20Dolmar%20112/GEDC2082_zps235d35e4.jpg.html)
Title: Re: Dolmar 112
Post by: Cut4fun on February 26, 2014, 02:18:52 pm
Did you find a air filter for this in the style you were looking for?

Maybe it was a different saw. One shown that I seen wanted is part number 114173020  baileys shows them for $15.99 most other sites come back NLA.

Username here 166  which owns cutting edge dolmar dealer posted about them back in 09 being in stock for $10. 4 years has past but you might PM him.
Title: Re: Dolmar 112
Post by: 3000 FPS on February 26, 2014, 02:48:42 pm
Hi Roger - Just got one of these myself.  Has had the 'spa treatment' from Mastermind.  Hopefully, I'll be able to take it out this weekend for some test runs.  Chain is loose because I'm in the process of adding a spike to the cover.

(http://i1018.photobucket.com/albums/af305/Warped5/Sachs%20Dolmar%20112/GEDC2082_zps235d35e4.jpg) (http://s1018.photobucket.com/user/Warped5/media/Sachs%20Dolmar%20112/GEDC2082_zps235d35e4.jpg.html)

I am interested to see how the saw performs.   What does the "spa treatment incorporate" for the saw.
Title: Re: Dolmar 112
Post by: 660magnum on February 26, 2014, 03:12:06 pm
The old Dolmars are great chainsaws

The 112 and slightly newer 111/115 were fine 3 cube saws. Hard to beat.

My 1997 closed port 52cc 115 that was given to me as a none runner 111 open port. Was originally 8 pin .325 X 15". I installed a 115 closed port cylinder/Meteor window piston, 16" Power Match, 60DL 7pin 3/8 RSC.
(http://img.photobucket.com/albums/v11/jamesirl/Dolmar111i.jpg) (http://smg.photobucket.com/user/jamesirl/media/Dolmar111i.jpg.html)
Title: Re: Dolmar 112
Post by: 3000 FPS on February 26, 2014, 04:25:07 pm
The old Dolmars are great chainsaws

The 112 and slightly newer 111/115 were fine 3 cube saws. Hard to beat.

My 1997 closed port 52cc 115 that was given to me as a none runner 111 open port. Was originally 8 pin .325 X 15". I installed a 115 closed port cylinder/Meteor window piston, 16" Power Match, 60DL 7pin 3/8 RSC.
(http://img.photobucket.com/albums/v11/jamesirl/Dolmar111i.jpg) (http://smg.photobucket.com/user/jamesirl/media/Dolmar111i.jpg.html)

Very nice and I bet that baby runs as good as it looks.
Title: Re: Dolmar 112
Post by: 660magnum on February 26, 2014, 05:01:44 pm
It is my goto chainsaw. I just like it for some reason? I have newer, faster, and lighter saws but this one is just likable.
Title: Re: Dolmar 112
Post by: 660magnum on February 26, 2014, 05:08:55 pm
I have a 115 that is a fine model airplane engine also. It was bought as a Brison 3.2. Like new, has never been run.
Title: Re: Dolmar 112
Post by: 3000 FPS on February 26, 2014, 07:44:52 pm
It is my goto chainsaw. I just like it for some reason? I have newer, faster, and lighter saws but this one is just likable.

What I like about that is that it has a part of you in the saw.   Your skill and knowledge is what helps make it a goto saw.    I am the same way about some of the Poulans I have worked on.
Title: Re: Dolmar 112
Post by: Warped5 on February 26, 2014, 08:21:47 pm


I am interested to see how the saw performs.   What does the "spa treatment incorporate" for the saw.

It's been ported and received a muff mod.  I hope to try it Saturday if the weather cooperates and I find an AF workaround.
Title: Re: Dolmar 112
Post by: 3000 FPS on February 26, 2014, 08:58:50 pm


I am interested to see how the saw performs.   What does the "spa treatment incorporate" for the saw.



It's been ported and received a muff mod.  I hope to try it Saturday if the weather cooperates and I find an AF workaround.

Sounds great.  I would like to see a pic when you get the spike on the cover.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 03, 2015, 04:32:47 pm
Well I went to get my Dolmar 112 out to do some cutting with and it is leaking again around the plastic plug where the tank vent and fuel line enter the top of the tank.   It seems my Yamabond fix did not last and has come loose.   
I was wondering if there was suppose to be an oring that fits on there.
If not any recommendations for something else that I can use that will hold it in place and be resistant to fuel.
Title: Re: Dolmar 112
Post by: 660magnum on April 03, 2015, 04:45:07 pm
On the 6400/7900 Dolmar came out with green rubber pieces that went into the tanks as a result of the ethanol causing the black rubber to soften.

The "green" itself was probably just to identify the parts with the new formulation?
Title: Re: Dolmar 112
Post by: 3000 FPS on April 03, 2015, 04:48:53 pm
On the 6400/7900 Dolmar came out with green rubber pieces that went into the tanks as a result of the ethanol causing the black rubber to soften.

The "green" itself was probably just to identify the parts with the new formulation?

So is this something I can order and will fit the 112.
Title: Re: Dolmar 112
Post by: 660magnum on April 03, 2015, 04:53:44 pm
I just don't know?  Last fall Dolmar went around and obsoleted anything older than 10 years. I have a 111/115 & 6000/6800 and some parts are hard to come by. I think it was a EPA thingy but new cylinders dried up real quickly.

When I was writing the first post, I was hoping that some of the newer parts might fit the older saw?
Title: Re: Dolmar 112
Post by: 3000 FPS on April 03, 2015, 04:58:24 pm
Ok Jim thanks.   
What I might do is try some of the fuel resistant epoxies that are out there.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 09, 2015, 07:40:42 pm
Well I found some fuel resistant cement at the automotive parts store and decided to give it a shot.   So far it is holding pretty firm and no more leaks.    I started the saw up today and cut some wood.   Unfortunately I noticed it changing during idle when the saw was tilted sideways, so I am going to replace the crank seals.

What was pretty cool was when I was looking at the parts list for the part number it also gave the dimension of the seals.
That made them a lot easier to find without taking the old ones out.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 13, 2015, 07:35:49 pm
Well I got the PTO side seal in.   Turns out that the PS 6800i uses the same seal on the PTO side. 
Part # 962 900 053.   So that number is the same for a Dolmar 112 or the PS 6800i.

I also found when removing the worm gear for the oiler that I did not have puller that would fit it.   But I did find that a 3/4 inch pipe thread Union would screw on to the worm gear close enouph that I could get a 2 jaw puller on it and remove the worm gear.  That is a large diameter worm gear used on the 112.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 14, 2015, 07:58:14 pm
Well I got the flywheel side crank seal today and got it installed.   I had to remove the points of course to get the old seal out and put the new one in.   Figured out a way to set the points and saw fired right up.   The best part is no more erratic idle and saw runs great.  Titled the saw in all directions and idle remains constant.   
Title: Re: Dolmar 112
Post by: 660magnum on April 14, 2015, 08:00:13 pm
Good to hear of the success.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 14, 2015, 08:15:12 pm
I have a question.   Does the gap size of the points also affect timing.   Let say I set them at .015 and then change them to .017.    Does the timing also change by 2 degrees and if so does a wider gap advance the timing or retard the timing.
I have not worked with points on saws very much so I was curious.
Title: Re: Dolmar 112
Post by: Eccentric on April 14, 2015, 10:54:59 pm
Wider gap will indeed advance the timing.  Don't think there's a direct/constant correlation between the gap increase and the timing change however.  Lots of variables involved.  You'd have to set it by trial/error to get the advance you're looking for.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 14, 2015, 11:14:13 pm
Wider gap will indeed advance the timing.  Don't think there's a direct/constant correlation between the gap increase and the timing change however.  Lots of variables involved.  You'd have to set it by trial/error to get the advance you're looking for.

Thanks Aaron.

  I bet there is a direct relationship between the two but it would have to take a lot of testing to figure it out. 
So I will just let it be.   Not that important.   
Title: Re: Dolmar 112
Post by: 660magnum on April 14, 2015, 11:56:46 pm
A wider gap advances the timing
Title: Re: Dolmar 112
Post by: 3000 FPS on April 15, 2015, 09:47:38 am
A wider gap advances the timing

Thanks Jim.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 15, 2015, 06:26:39 pm
I took the Dolmar 112 out and noodled some rounds with it and I think that is the best I have seen this saw run since I have owned it.   I was going to reset the points a little wider but have changed my mind seeing how good it is running and how well it now idles. 
Thanks for the replies guys.
Title: Re: Dolmar 112
Post by: 660magnum on April 15, 2015, 06:36:05 pm
+1
Title: Re: Dolmar 112
Post by: OldJack on April 16, 2015, 02:56:58 am
A point to consider, if you'll pardon the pun. I'm rusty on my points and condenser theory, but the points should open at the time of minimum current flow across them to prevent arcing and burning. Running with the wrong point gap isn't good for the points. The condenser controls the current flow across the points and a bad condenser will eat points.
Title: Re: Dolmar 112
Post by: 3000 FPS on April 16, 2015, 10:41:34 am
I believe the condenser will discharge the voltage to ground instead of arching across the contacts of the points.   
That is the nature of capacitance.