Pro Mac 800 82ccs

Well.....I've known about this saw for about a year now. I was digging around a friends shed and came across this in the corner. It turns out that he was keeping it for a friend and wanted it for himself. Well...it turns out that my friend figured out that he didn't want to start this saw with his arthritis, and no comp release, so, we traded a few things and now it's mine! There's a bar and chain that I will be getting too in a few days.

The day I found the saw it started under 5 pulls with fuel put in the tank. I started it today and it runs like a champ! I've cut with this saw the day I found it. Chain can use some work....isn't that always the case? This saw does have a version of anti-vibe!

Here are some pics!

<a ="http://s1108.photobucket.com/albums/h403/dan_laduke/?action=view¤t=ProMac800top.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h403/dan_laduke/ProMac800top.jpg" border="0" alt="Photobucket"></a>
<a ="http://s1108.photobucket.com/albums/h403/dan_laduke/?action=view¤t=ProMac800left.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h403/dan_laduke/ProMac800left.jpg" border="0" alt="Photobucket"></a>
<a ="http://s1108.photobucket.com/albums/h403/dan_laduke/?action=view¤t=ProMac800right.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h403/dan_laduke/ProMac800right.jpg" border="0" alt="Photobucket"></a>
<a href="http://s1108.photobucket.com/albums/h403/dan_laduke/?action=view&current=ProMac800front.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h403/dan_laduke/ProMac800front.jpg" border="0" alt="Photobucket"></a>
<a ="http://s1108.photobucket.com/albums/h403/dan_laduke/?action=view¤t=ProMac800bottom.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h403/dan_laduke/ProMac800bottom.jpg" border="0" alt="Photobucket"></a>

Gotta love those Macs! I have a few Macs myself and have been on the hunt for one similar to this.

Clean that baby up till it shines! It looks like it has a lot of potential but I see the typical broken clutch cover and missing chain brake. I don't know what it is about that style saw but most of the ones I see are broken and replacements are expensive on feebay. The pro mac 600 series almost never have broken covers and replacements are cheap and plentiful, it's just not fair! (I've been trying to find a good used cover for my pro mac 850, thus the rant)

Anyway, I'm sure you will love cutting with your 800, it's quite a torque monster.
:greenchainsaw:

Nice saw, Those 82cc's saws are great runners.
The last of Mcculloch's good pro saws.
Get the muffler and clutch cover taken care of
and you will have one sweet saw.

Congrats.


Lee

Guess I should drag mine off the shelf and see if it fires. Had it close to two years and have only cut one tree with it.

Nice saw. My new favorite saw is a PM 800. But it also wetted by thirst for something even bigger - so be careful. Clutch covers are hard to find but a 10-10, 700, 850 etc will work and they are thicker in the muffler area - will hold more heat however.

I think a lot of chain brakes got removed because they make the clutch cover awkward to remove with full wrap bars and they cut down on the hand clearance when cutting big diameter wood. Ron

(I've been trying to find a good used cover for my pro mac 850, thus the rant)

The 850 uses the more common 10 series clutch cover. If you search for them you can buy a 10-10 parts saw with a good cover and brake for what some covers bring on EBay. Hope you find one. Ron

You could just grind off the rest of the muffler guard, I would adapt a reed type 10-10 muffler.

Thanks for all of the kind words!

RandyMac said:

You could just grind off the rest of the muffler guard, I would adapt a reed type 10-10 muffler.

Click to expand...

Why adapt a 10-10 muffler? What's wrong with this one?

.


The 800, 850, PM8200, DE80 were McCulloch's last true production saws. Real history there.


.

obligitory 850 pic

If you go for a non muffler guard driveside cover, that big muffler will be hot and close to fingers, the reed muffler is very low profile.

I had a little time one day this week and was looking through some McCulloch Service Bulletins and came across the following quote:

"The Pro Mac 800 is an improved version of the Pro Mac 850 model. The Pro Mac 800 has increase horsepower and cutting speed. Along with these improvements, the Pro Mac 800 incorporates a new exhaust "Q" port. This new exhaust port lowers the compression at starting speeds (RPM's), thus eliminating the necessity of a D.S.P. valve. The "Q" port also smoothes out the idle and aids in reducing engine exhaust noise." McCulloch Service Bulletin 1707, December 1, 1980

I have a couple of PM 700 saws (one complete and running, one mostly complete) but now I suppose I am going to have to find a PM 800 as well.

Mark

heimannm said:

I had a little time one day this week and was looking through some McCulloch Service Bulletins and came across the following quote:

"The Pro Mac 800 is an improved version of the Pro Mac 850 model. The Pro Mac 800 has increase horsepower and cutting speed. Along with these improvements, the Pro Mac 800 incorporates a new exhaust "Q" port. This new exhaust port lowers the compression at starting speeds (RPM's), thus eliminating the necessity of a D.S.P. valve. The "Q" port also smoothes out the idle and aids in reducing engine exhaust noise." McCulloch Service Bulletin 1707, December 1, 1980

I have a couple of PM 700 saws (one complete and running, one mostly complete) but now I suppose I am going to have to find a PM 800 as well.

Mark

Click to expand...

Thanks for this post as it validates my thinking of "starting" compression versus "running" compression. http://www.arboristsite.com/showpost.php?p=2454111&postcount=3382 I'll try and get some shots of the exhaust ports of both a PM 800 and a PM 850 so you can see the little oval carve-out the 800 has. I am surprised and pleased to hear of the power increase. I naively compared these models to muscle cars of the era and thought the 850 would be more powerful than the 800 particularly with the loss of leaded gas. However, as stated in POST 3382 some 800's and the DE80 came with DSP valves. Ron

Thanks for all of the replys guys!

Anyone have a picture of what is missing on the clutch/muffler cover?

Sorry Mark, I probably will not be giving up this saw as easy as I did the Mini-Mac.

Have you made it home?

Any one have an IPL and serviced manual for this saw? Thanks!

I wonder if SP81 parts would fit on that saw? My SP81 has a much cleaner look I was never crazy about the look of the slotted cover over the muffler on the PM saws. Also arent all the SP80/81 Pm 800/850s all the same displacement, 82 cc?

Exhaust ports

Mark, below are exhaust port photos.

All three:

Toasted PM800:

PM850:

SP81E:

I have yet to find any difference between the PM850 and the SP81E cylinders.

Do you have any info on the improvements of the DE80? All I can see are the intake manifold and corresponding air box changes - also different carb. Ron

Henry G. said:

I wonder if SP81 parts would fit on that saw? My SP81 has a much cleaner look I was never crazy about the look of the slotted cover over the muffler on the PM saws. Also arent all the SP80/81 Pm 800/850s all the same displacement, 82 cc?

Click to expand...

According to Acres site they are all the same 2.06" bore x 1.50" stroke and 82 cc.

Belgian posted recently on some experiences with some of the 82 cc models but I don't remember exactly which ones he was working on. There are some significant differences with mounts etc. as you move through those models.

Mark

Anyone have a picture of what is missing on the clutch/muffler cover?

PM800 and PM8200 no DSP (notice the straight back side of fins):

PM800 with DSP and DE80 (notice the carve out for DSP valve in the fins; chain brake has been removed):

PM850 PM700 (fins are a lot sturdier; dogs not installed):

Hope this helps. Ron

Henry G. said:

I wonder if SP81 parts would fit on that saw? My SP81 has a much cleaner look I was never crazy about the look of the slotted cover over the muffler on the PM saws. Also arent all the SP80/81 Pm 800/850s all the same displacement, 82 cc?

Click to expand...

I believe you should get an IPL as there are a number of developments in the SP80, SP81 and SP81E progression. Some may be significant and affect interchangibility and others aren't. My SP81E must have been a later version because other than the handle there doesn't appear to be any differences between it and my PM850.

Ron

PS unless Mark's revelation today changes my mind about building a saw based on the PM850; I plan to use the SP handle as I like the looks too. I think the 800 and DE80 have better looking tanks - sides are angled.