DOLMAR/MAKITA The Official Sachs Dolmar Dolmar Makita Dolmar Chainsaws Thread

[RI Chevy]

I am not sure. Just mentioning my observations in passing, as it seems we have been experiencing the same types of issues. [emoji2369]

 

[huskyboy]

Is this just the nature of the 6100? Or is there something wrong with the oil pump/alignment of the bar?

What kind of wood are you cutting? That makes a difference too.

 

[Dub11]

So I was just doing so parts number cross referencing and it looks like the 6100 share the same oil pump as a 4300

So it may look like a pump mod is warranted. Might be worth while to run a winter blend bar oil in these until a mid is done.

 

[Wilhelm]

On my Dolmar PS-550 set up with a Sugihara bar the bars oiling hole was positioned higher than the saws oiling slot.

On my Dolmar PS-6100 set up with a Tsumura bar, which features a upward slanted oiling hole, the saws oiling slot lines up with the lower edge of the bars oiling hole.
I ground that hole area more open on the bar to counteract flow restriction.
My PS-6100 tended to use up only about 2/3 of the oil tank on a full tank of fuel.
I haven't ran a full tank of fuel trough the saw after the bar mod, so I can not say if there is now more oil flow.

I think those slanted narrow oiling holes on modern bars are just a way for manufacturers to market their products as eco friendly.

 

[huskyboy]

So I was just doing so parts number cross referencing and it looks like the 6100 share the same oil pump as a 4300

So it may look like a pump mod is warranted. Might be worth while to run a winter blend bar oil in these until a mid is done.

I even modded the pump on my 421 lol

 

[RI Chevy]

So I was just doing so parts number cross referencing and it looks like the 6100 share the same oil pump as a 4300

So it may look like a pump mod is warranted. Might be worth while to run a winter blend bar oil in these until a mid is done.

Interesting find there Wayne! Just thinking outloud, Dolkita does not offer HO oilers?

 

[RI Chevy]

I even modded the pump on my 421 lol

Where is the "how to" thread???
Come on now, share the wealth!

 

[Ayetee61]

That's too hot!

Not imposing anything, are You running the correct gauge chain in Your bar?
I ran a .063" that I didn't know it was one in a .058" bar - I noticed weeks later while sorting my chains.
Luckily noting bad nor permanent happened, it seems this particular bar is worn out enough after 13 years of usage to accommodate a .063" gauge chain.

All I am saying, it is worth taking a caliper to Your chains DL's and a feeler gauge to Your bar.

I only used to have .058" in 3/8", both bars and chains.
Through some generous gifts and purchases I now have chains in .050" .058" & .063", and bars in .050" & .058" - to say the least, swapping chains between saws got less simple.

It is the correct chain for the bar

 

[Dub11]

Interesting find there Wayne! Just thinking outloud, Dolkita does not offer HO oilers?

Should be but I have a feeling that for some strange reason Dolmar has .325 on the brain with the 6100.

And this might help. They look similar.
http://opeforum.com/threads/husqvarna-oiler-mod.518/

 

[Wilhelm]

I haven't modded a single pump on any of my saws and I run a 36" B&C on my large frame Dolmar's.

I do mod the oiling holes on nearly all my bars though.

My theory is that by modding the saws pump You technically increase pressure, which may increase wear on the pump.
By optimizing the position and enlarging the oiling hole in the bar You reduce back pressure and allow the stock pump to do its job without increasing its flow and pressure.

Also, I have found that tacky oil is causing my B&C to run hotter than lower viscosity non tacky oil.

 

[Ayetee61]

I haven't modded a single pump on any of my saws and I run a 36" B&C on my large frame Dolmar's.

I do mod the oiling holes on nearly all my bars though.

My theory is that by modding the saws pump You technically increase pressure, which may increase wear on the pump.
By optimizing the position and enlarging the oiling hole in the bar You reduce back pressure and allow the stock pump to do its job without increasing its flow and pressure.

Also, I have found that tacky oil is causing my B&C to run hotter than lower viscosity non tacky oil.

What bar oil are you using? Winter grade? I've heard good things about tractor supply oil

 

[RI Chevy]

I wouldn't run winter bar oil in the summer. I tried that in my 6100 as there was some winter oil in the tank from the change in season. Didn't do well for me. I poured out the winter oil, put in regular oil and all was better for me.
I use TSC bar oil. Works well. Nice and tacky.

 

[Lightning Performance]

I haven't modded a single pump on any of my saws and I run a 36" B&C on my large frame Dolmar's.

I do mod the oiling holes on nearly all my bars though.

My theory is that by modding the saws pump You technically increase pressure, which may increase wear on the pump.
By optimizing the position and enlarging the oiling hole in the bar You reduce back pressure and allow the stock pump to do its job without increasing its flow and pressure.

Also, I have found that tacky oil is causing my B&C to run hotter than lower viscosity non tacky oil.

Volume is the increase. No pressure in the chainsaw oil system.

 

[Wilhelm]

I do not utilize superspecialextremetackyhypersuperior B&C oil, I believe that stuff is no more than a well marketed placebo.

I use industrial grade gearbox oil in extreme summer heats (220 viscosity, features mediocre tackyness).
But I came to like oil intended for lubrication of non closed circuit gliding/friction surfaces which doubles as a surface cleaner (68 viscosity, no tackyness whatsoever).

In my youth I utilized used engine oil, didn't know any better back then.
My dad used to say "Why would You use clean fresh oil, it goes around the bar just once and is gone just the same!"
As I grew my own voice and opinion with age I stopped using drained oil.

An acquaintance of mine has a Dolmar PS-420, he is feeding her with disposed but clean hydraulic oil out of an industrial press.

 

[Wilhelm]

I have never heard of or seen "winter" B&C oil here in Croatia.
One and the same oil is being used/sold all year around!

 

[RI Chevy]

Your a brave man Wilhelm.
Engineers develop certain oils for specific reasons. I personally use bar oil. Lol
Just me...

 

[Wilhelm]

Volume is the increase. No pressure in the chainsaw oil system.

If the choke points stay unchanged, say a misaligned or too small oiling hole in the bar, doesn't the volume increase create increased pressure.

I might be wrong, but I in my mind I am comparing a saws oil pump to my drill powered drainage pump.
With a too long or too small diameter hose on the pumps outlet the pump and drill encounter higher back pressure and run hot and flow is hindered.
With a large diameter or very short outlet hose the same pump and drill drain the same hole almost twice as fast.

Again, maybe I am looking at it the wrong way, but to me it seems to be more beneficial to remove flow restrictions rather than increasing flow itself.


BTW, we just turned this thread into an oil thread!

 

[Dub11]

I wouldn't run winter bar oil in the summer. I tried that in my 6100 as there was some winter oil in the tank from the change in season. Didn't do well for me. I poured out the winter oil, put in regular oil and all was better for me.
I use TSC bar oil. Works well. Nice and tacky.

What didn't you like about it?

 

[RI Chevy]

Winter weight oil in the warmer weather, the oil was much to thin. Just didn't oil well at all.
Winter oil worked great in COLD temps. Just the way it's supposed to work. Lol

 

[Wilhelm]

View attachment 186364 Your a brave man Wilhelm.
Engineers develop certain oils for specific reasons. I personally use bar oil. Lol
Just me...

Placebo, nothing more!

It is not the engineer who develops the oil telling You what is best for Your saw (equipment), it's the salesmen sitting in front of a computer which doesn't know what fuel his car runs on lest is capable of running a chainsaw (this is meant to be metaphoric, no insult to any members intended).

A product is about getting it sold and it sells through advertisement, no more and no less!

You did hear about Oregon selling emulgating oil right?
A little bit of oil mixed with a bunch of tap water and You get bar oil with superior cooling effect because evaporating water has a cooling effect while oil has next to none.

To all!
Live and let live!
Do what works best for You, and I am glad it works for You.

Cheers