McCulloch Chain Saws

[leeha]

Hey Leeha!

The 48890 carbs you've had... Did they all have the high jet booster venturi in them? Looks like someone went in and removed the one on mine. The port is fine, but I may need to get out the sandpaper and clean it up a little. Kinda curious what that's going to do for the tuning... if and when that dayum motor ever arrives :msp_mad:.

Further, did you have to do any grinding on the tank carb port to "match" it? The tank I have will need to be enlarged to .940. Not a big deal, just curious.

I just looked at 3 48890B carbs and they
all look like yours. I never did any grinding
on the tank port, I thought it was the same
size as the carb. I will have to check to be
sure.


Lee

 

[dogder]

Get a carb kit for it and a new fuel filter. Might as well replace the fuel lines too. I suppose you could try to just clean the carb first but I always end up getting a new kit since they are pretty cheap.

Thanks,

Jack

 

[dogder]

Empty any old fuel mix from the tank, pour in some fresh mix, dump it out, repeat until the tank is clean then add some more fresh mix.

Next thing is to pull the spark plug and crank it over with the spark plug touching metal on the saw to verify you have a good spark.

If yes, before replacing the spark plug pour a teaspoon or so fo fuel mix right down the plug hole into the combustion chamber. Replace the plug and pull it a few times with the throttle held wide open, it should fire and run for a second or two. If you catch it before it ties try slipping the choke on and see if it will pull a little fuel on it's own. If it dies, again pull it over with the throttle wide open to make sure it is not flooded, if no go then try again with the choke, if not go then you may have to prime it a bit down the carburetor with a little more fresh mix.

If priming it and starting it 2-4 times does not get it running, you will likely have to clean the fuel system and carburetor, may require a carburetor kit as Brian noted.

You may not get a lot of attention here with a TB as we tend to favor the vintage saws.

Mark

Thanks,

Jack

 

[heimannm]

Nice find there Diesel, clever angles with the photo's as well; you never showed the corner where the compression release would be on a 797 so no one could have known if you hadn't noted the 790 stamp on the bottom.

I have a 790 e-Bay saw on the way but it was reported to only have 120 PSI compression. Once it arrives I only need a regular old 797 and I will have the 700 Series complete.

CPR - can he start the Johnny-Popper spinning the flywheel by hand?

Mark

 

[cpr]

CPR - can he start the Johnny-Popper spinning the flywheel by hand?

Mark

Not a prayer. It's somewhere around 760ci and even with the decomp valves open it is electric start only.

 

[dieselsmoke]

Nice find there Diesel, clever angles with the photo's as well; you never showed the corner where the compression release would be on a 797 so no one could have known if you hadn't noted the 790 stamp on the bottom.

I have a 790 e-Bay saw on the way but it was reported to only have 120 PSI compression. Once it arrives I only need a regular old 797 and I will have the 700 Series complete.

CPR - can he start the Johnny-Popper spinning the flywheel by hand?

Mark

Not really trying to decieve, thru photography. I had cell phone pics a couple of days ago, but are lost in cyber-space. What I didnt show is the broken rear handle. My
buddie in Amboy is going to hook me up with a parts donar saw head.
I have a BP-1 brochure, in VG condition if you're interested, I see that you collect memorbila.

Is that Mid west Speak? johnny-popper is slang for ???

 

[heimannm]

Johnny Popper

Two cylinder John Deere.

Pop-Pop...Pop-Pop...Pop-Pop...

Like an overgrown Harley but much lower RPM.

John Deere did some amazing things with those including some fairly large displacement diesels.

Certain old gas models could be starter by flipping the flywheel by hand, or alternatively removing the steering wheel and using that to spin the flywheel.

Didn't mean to say the photo was deceptive, just clever. When I go back to look at photo's I've made to see certain details I often find I've been clever as well and concealed those details even from myself.

Anything related to BP-1 is of great interest here, thanks! Let me know what I need to do.

Mark

 

[dieselsmoke]

J-p

Ah yes, There are a few around here, parade tractors. At the "Great Oregon Steam-up", there is 2-3 acres of green, that is J-D green. They out number the other brands by probably 2-1.

 

[Steve NW WI]

New member of the McC club here, just got a 44 Super:

More info and pics in this

 

[promac850]

AND HE'S BACK!!! So How' the flywheel do ? Off? still on?

Ah... hello diesel. It's still on there, I reckon it has something to do with those chi-com bolts holding the puller onto the flywheel... I think they're stretching... also, the end of the crank left an impression on the pointy thing on the end of the huge bolt that is used to tighten the puller... I will get some grade 8 1/4-20 bolts soon, after I get my car fixed.

Man, I have so much going on around here that half of an iron would choke the fire out... Starting to actually get a little overwhelmed... Member at several other sites too... they deal with MK1 Volkswagens.

Got catching up to do in school, my car to fix, tools to clean organize and separate, the saws to play with, and spring cleaning, and... and...

 

[dieselsmoke]

New member of the McC club here, just got a 44 Super:

More info and pics in this

Nice Mcculloch, is it a runner? So D-44, is that a 44cc

saw? :msp_wink: Just Kidding, Fire that baby up!!!

 

[STEVEGODSEYJR]

Here is my super 44 that I picked up in a box of "junk" Steve

 

[dieselsmoke]

Your box of "junk" contains Yellow Gold:hmm3grin2orange:

 

[paccity]

dieselsmoke, nice find, never thought about the swapmeets. we have one down here every couple months, i'll have to check it out. i need to start on the ones i've recently got. don't know wich one to start first.

 

[cpr]

Two cylinder John Deere.

Pop-Pop...Pop-Pop...Pop-Pop...

Like an overgrown Harley but much lower RPM.

John Deere did some amazing things with those including some fairly large displacement diesels.

Certain old gas models could be starter by flipping the flywheel by hand, or alternatively removing the steering wheel and using that to spin the flywheel.

Mark

Found a crappy vid of Tom's G. 700+ci is loud outdoors, inside on the winter national circuit, it rattles your teeth. Tom's a first class guy. 71 years old and could pass for 60. Still runs marathons. I WISH I can be in as great a shape as him when/if I get that old.

BTW, his G and his A pullers are both black and yellow.
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/RyX6bVKZsog" frameborder="0" allowfullscreen></iframe>

 

[dieselsmoke]

dieselsmoke, nice find, never thought about the swapmeets. we have one down here every couple months, i'll have to check it out. i need to start on the ones i've recently got. don't know wich one to start first.

Start on the easiest one!!
I got the 790 fired up last nite and ripped into a firewood block, cuts way crooked. Popped the bar off to find the chain is .404X .050 ga.??? On a well worn .058 solid nose bar. I'll swap from another saw next time. It seems to have good power, and GREAT sound.:msp_biggrin:

 

[rwoods]

Here is my super 44 that I picked up in a box of "junk" Steve

Nice saw. Ron

 

[rwoods]

Oh, a radial engine makes my heart sing!

Seeing all that smoke upon startup reminded me of the old Convairs we ran during my short career in the air freight business 30 years ago. When you fired up those twin P&W 2800s, the plane would almost disappear in the smoke. I can't remember the exact oil burn rate but I believe it was several gallons per hour. Ron

 

[RandyMac]

Seeing all that smoke upon startup reminded me of the old Convairs we ran during my short career in the air freight business 30 years ago. When you fired up those twin P&W 2800s, the plane would almost disappear in the smoke. I can't remember the exact oil burn rate but I believe it was several gallons per hour. Ron

Sounds like a Chevy pick-up:hmm3grin2orange:

 

[Brian13]

It's not pretty, but I like it. I saw the AC cover on this saw and bout wet myself. I've cruised this swap meet several times and always found, plastic homies and poulans. But Not this year!!!!
Got her running, just a new plug and fresh fuel. I'm hoping for some decesnt weekend weather,and a break from work stuff, and try this baby out. The cover is incorrect, It's stamped 790, on the block.

Congrats!!! You could probably fool most people. Go put it in some big wood now!!