McCulloch 740

[Rog]

It was given to me by a friend. this thing is a MONSTER I NEED SOME HELP!!!! :censored:

 

[lawnmowertech37]

what kind of help you need?

 

[Rog]

Any help would be a great help

Any help would be good. I'm looking for any info on the saw. I'm pretty new to collecting.So I would really like to know how many cc the saw is, fuel ratio and where i might find parts. This saw is a monster and very old, I'd really like to bring it back to life. It runs when you put gas in the carb and it was well used . this is my first big saw, and i believe, apart of history and I don't want it to be cast aside and forgotten It might never see it's hay day again but I firmly believe that It deserves a place in any collection. A lot of people give me crap about the old mac's in my collection but without the old saws of the past there
would be no way to judge the space age saws of the future. We must take all we can from those that came before because thats where It all started and they deserve the respect of all saw lovers.

 

[heimannm]

1963-1964, 6.04 In³/99 cc, direct drive, McCulloch carburetor, magneto (points/condensor) ignition.

I think what you need to do is send it to me to insure safe keeping along with a brother or two...

Mark

 

[Rog]

wow

whats the fuel ratio? When i got the saw the gas in it was red? where might find a manual for It. I tried to get the 1010 manual the other day and was denied.I also noticed a few of your saws are missing the dogs as is mine. I'm a cnc laser operator and if you can make me a print or scale drawing I will cut us some.:jawdrop:

 

[heimannm]

740

I run 40:1 in all of my two strokes, seems to work well for me.

Send me a PM with your e-mail and I will send you drawings of 3 or 4 different spike bar designs, 4 spike, 5 spike, and another one or two that are pretty unique on some of the older McCullochs.

I don't have a manual specific to that saw, but I do have a 450 manual in .pdf format I can send, also have the IPL in .pdf format for the 740.

I will look around to see if I have any other manuals that may be closer to the 740.

Mark

 

[Rog]

Thanks

I sent my e-mail

 

[Bruce Hopf]

1963-1964, 6.04 In³/99 cc, direct drive, McCulloch carburetor, magneto (points/condensor) ignition.

I think what you need to do is send it to me to insure safe keeping along with a brother or two...

Mark

Mark. Your just the guy that might be able to answer my question. How tight do you tighten your chain wit a hard nosed bar?
Thanks. Bruce.

 

[heimannm]

I'm no expert

I am not an expert but I normally start out a bit looser than on my sprocket nose bars, just a little sag on the bottom of the chain before I start, loose enough that I can pull it around by hand fairly easily. On a new chain I sometimes have to stop and take up a little slack once or twice on the first tank of gas or so.

On the saws with a manual oiler like the 1-85 you really get a work out keeping the chain lubed. The 740 has an automatic oiler with a manual overide that even adds a little everytime you pull the throttle wide open. No problem with lubrication on this saw.

Mark

 

[Bruce Hopf]

I am not an expert but I normally start out a bit looser than on my sprocket nose bars, just a little sag on the bottom of the chain before I start, loose enough that I can pull it around by hand fairly easily. On a new chain I sometimes have to stop and take up a little slack once or twice on the first tank of gas or so.

On the saws with a manual oiler like the 1-85 you really get a work out keeping the chain lubed. The 740 has an automatic oiler with a manual override that even adds a little everytime you pull the throttle wide open. No problem with lubrication on this saw.

Mark

OK. I tried out the Mac 1-10 that I got from a scrap heap at a small engine repair shop a few weeks back, fixed it up a little, and got it running. I put on a solid nosed bar. After awhile of cutting, the chain got so tight , that the saw wouldn't drive it. After it cooled down for a minute, it would drive it again, and until it couldn't again. It too has an automatic oilier with a manual override oilier as well.
When the saw can't drive the chain any more, should I loosen the chain so it will be able to run the chain properly. Its been over 20 years since I ran with a hard nosed bar. Thanks. Bruce.

 

[Simpy740]

740

I run 40:1 in all of my two strokes, seems to work well for me.

Send me a PM with your e-mail and I will send you drawings of 3 or 4 different spike bar designs, 4 spike, 5 spike, and another one or two that are pretty unique on some of the older McCullochs.

I don't have a manual specific to that saw, but I do have a 450 manual in .pdf format I can send, also have the IPL in .pdf format for the 740.

I will look around to see if I have any other manuals that may be closer to the 740.

Mark

They have several manuals on eBay
I also have 2 -740 saws