Dolmar 64xx/73xx/79xx series, smurfs and solo 665/675/681 thread

[Wilhelm]

Left PS-7310 with 20" .404" chipper and right PS-7900 with 24" 3/8" full chisel.





Haven't run .404" in years, tomorrow might turn out to be a fun day - I am going to help a friend & coworker to buck his relatives firewood logs.
I am going to bring a fleet of saws with me to blow some fuel through them.

 

[davidwyby]

I drug @Guysmiley over here to
OPE in hopes of finding him a 681 PnC :

G

WANTED Post in thread '681/7900 PnC used'

Sep 3, 2024

all done, thanks! I think I figured out the issue with not letting me set my password to what I wanted all figured out... Ended up getting locked out for a bit, anywho...

Thanks davidwyby! As stated in the title of the post, I would love a gently used oem p+c for my 681. I can shim a 7900 to work as well. I am rebuilding with an aftermarket but I know they dont last as long or put out the same amount of power (potentially although my last aftermarket seemed to do pretty well before one of my bearings started slopping out)

feel free to post here if you've got one.

Thankyou!

• Guysmiley

• 

 

[Guysmiley]

I drug @Guysmiley over here to
OPE in hopes of finding him a 681 PnC :

G

WANTED Post in thread '681/7900 PnC used'

Sep 3, 2024

all done, thanks! I think I figured out the issue with not letting me set my password to what I wanted all figured out... Ended up getting locked out for a bit, anywho...

Thanks davidwyby! As stated in the title of the post, I would love a gently used oem p+c for my 681. I can shim a 7900 to work as well. I am rebuilding with an aftermarket but I know they dont last as long or put out the same amount of power (potentially although my last aftermarket seemed to do pretty well before one of my bearings started slopping out)

feel free to post here if you've got one.

Thankyou!

• Guysmiley

• 

I will be sure to share a pic when all the parts come together and my 681 is all back together... Great saw! Been through some serious fun and failure with it but would not think twice about rebuilding. Not gonna lie, getting a ms661 and bridging a gap between it and my 075 would be nice but the right deal has not presented yet.

I got some good use out of a PNW p/c but a loose oil seal ruined my fun. The cylinder was giving up the ghost on its nikasil anyways. Will update when the surgeries are completed. New main bearings, seals, titanikel jug, should get me back in business for a bit.

A lightly used OEM cylinder would be great! My OEM got nerfed by a needle bearing let loose by the original crank on its first major pooping the bed, I got it for free with what was thought to be compression issues but turned out to be a carb. Thank the Lord's for lazy saw techs (maybe the decomp valve was pushed in a lil, no idea) anyways, very happy to find a place that is keeping these guys going

 

[davidwyby]

288, poor man’s 661

I might be sailing one or two or three or four

 

[Wilhelm]

288, poor man’s 661

I might be sailing one or two or three or four

That is poor math!

Selling 4 288's to fund a single 661 just so You have an rich man's saw?

 

[greystone mountain man]

288, poor man’s 661

I might be sailing one or two or three or four

Confucius say 288 wise man 661 confused man

 

[davidwyby]

That is poor math!

Selling 4 288's to fund a single 661 just so You have an rich man's saw?

No plans to buy a 661

But I may have several 288s

 

[Wilhelm]

No plans to buy a 661

But I may have several 288s

Poor man, good to hear that.

 

[Wilhelm]

Slackers!

Dolmar PS-6400, chain that's been in a coma, and a plum tree stump that I have been running circles around mowing all summer.

No more stump, and the chain is dead.

 

[Wilhelm]

The chain used to remove the stump, retired now.


More stumping chains awaiting retirement.

 

[Hfernandez]

So sad when complete idiots mangle up saws!

This was supposed to be a "fell off tractor parts saw" which she is not!
Falling off a tractor does not replace 30% of the screws & bolts with non OEM.
Falling off a tractor does not result in deep screw driver marks driven between the case halves & both bearing being damaged.
Falling off a tractor does not severely bend the tubular front handle nor call for welding up the muffler.
And the list goes on as over 50% of the saw is unusable.

This is the worst I have ever seen!

View attachment 427841

Hello, I’m new here and new to learning chainsaws more in depth. I do want to push back a bit back in the hopes of having a conversation of substance. First, I will say, just like with my vehicles, if I have to go more than three levels deep, I’m taking it to a professional. For my vehicles, that means changing out the spark plugs and ignition coils at the most. For chainsaws, I’m mixing my own fuel, sharpening my chains, changing out the spark plugs, mufflers, and air filters at most. I’m staying my lane, I’ll get a porter to do the real pro work.
But, is there not something to be said about people trying things? I believe in ownership of mistakes, but is it wise to dog someone who is trying? I’m sure there are things you have done with significant errors, no?

 

[Wilhelm]

Hello, I’m new here and new to learning chainsaws more in depth. I do want to push back a bit back in the hopes of having a conversation of substance. First, I will say, just like with my vehicles, if I have to go more than three levels deep, I’m taking it to a professional. For my vehicles, that means changing out the spark plugs and ignition coils at the most. For chainsaws, I’m mixing my own fuel, sharpening my chains, changing out the spark plugs, mufflers, and air filters at most. I’m staying my lane, I’ll get a porter to do the real pro work.
But, is there not something to be said about people trying things? I believe in ownership of mistakes, but is it wise to dog someone who is trying? I’m sure there are things you have done with significant errors, no?

The saw You quoted me on has been hammered, raped, torn apart, mashed back together - whoever did this deserves a kick in his sack!

I can take a Swiss watch apart utilizing a hammer and then say I deserve recognition for trying - I wouldn't!

I am a machinist/mechanic by trade.
Have I damaged things through improper usage?
Yes!
Have I damaged defective yet fixable things beyond repair trying to fix them?
No!
If You don't & can't understand the matter at hand leave it be!

Welcome to OPEForum, congratulations on Your first post.
Have Your first like.

 

[Ketchup]

Hello, I’m new here and new to learning chainsaws more in depth. I do want to push back a bit back in the hopes of having a conversation of substance. First, I will say, just like with my vehicles, if I have to go more than three levels deep, I’m taking it to a professional. For my vehicles, that means changing out the spark plugs and ignition coils at the most. For chainsaws, I’m mixing my own fuel, sharpening my chains, changing out the spark plugs, mufflers, and air filters at most. I’m staying my lane, I’ll get a porter to do the real pro work.
But, is there not something to be said about people trying things? I believe in ownership of mistakes, but is it wise to dog someone who is trying? I’m sure there are things you have done with significant errors, no?

We all started somewhere, sure. Few of us did the best repairs the first time. But if you’re sold an item that was supposed to be in one condition, then you find it’s in far worse, you have grounds to be upset.
And not everyone is trying. There are lazy repairs, careless repairs and deeds of foolishness that didn’t even repair. Incompetence isn’t always excusable.

 

[Wilhelm]

We all started somewhere, sure. Few of us did the best repairs the first time. But if you’re sold an item that was supposed to be in one condition, then you find it’s in far worse, you have grounds to be upset.
And not everyone is trying. There are lazy repairs, careless repairs and deeds of foolishness that didn’t even repair. Incompetence isn’t always excusable.

My purchase in question did not mention that the case, bearings, piston, flywheel, etc. were rendered useless by botched repair attempts.
The saw was listed as "fell off tractor, rear handle/tank broken!"
That kinda implies a useable P&C, FW&Coil, case half's, and other parts.

Whoever mangled up said saw is a complete idiot, period!

 

[Wilhelm]

Dolmar PS-7300, Oregon full chisel full skip 25° round ground 24", cherry.





My first ever CSM slab.

 

[hacskaroly]

For chainsaws, I’m mixing my own fuel, sharpening my chains, changing out the spark plugs, mufflers, and air filters at most. I’m staying my lane, I’ll get a porter to do the real pro work.

Get yourself a small cheap saw - usually you can find people who will give you a Poulan (running or not) and just take it apart, put it back together and take it apart again. You will realize quickly that there isn't much mystery behind the metal and plastic. If you break something...oh well, if you get it running...bonus!! I am not to the level of porting, but I don't hesitate to split a case now to replace bearings (unless its a clamshell, then I don't have to split it). As you say the basic stuff is where you are at, if you have a "training saw" then look up how to remove and put back the carb, restring a recoil, put in new fuel lines. By the time you have eventually worked through each of these, you will have been through the whole saw. Some cylinders can be a challenge to get on if you don't have a ring clamp to help, but other are built to not need the clamp. If you tear something apart and get stuck, take some pictures and post the help/guidance you need, someone will jump in and be able to share their experience.

I ask what I feel might be stupid questions, but always have gotten some good responses that helped me work through the challenge I was facing. Sometimes too you get some good natured ribbing too...but who here won't put a "kick me" sign on their buddy's back!

 

[Wilhelm]

My Dolmar PS-7300 came out to play a little more.
I had to swap bars as the 24" was too short for the purpose.

 

[Wilhelm]

Can't store her properly with the mill attached.
At least she is suspended off the ground by being strapped onto the mill.

 

[Wilhelm]

I have cut the last slab, now I can dismantle the CSM and store my PS-7300.

 

[Wilhelm]

Taking the CSM & 36" B&C off my PS-7300.
She deserves a little rest.