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Post by NorthernLonewolf on Mar 27, 2024 15:34:23 GMT -5
Is it hard to pull over with the spark plug removed? If so the cord may be binding in the starter pully & new one will solve that problem, try poring a shot of fuel in the carb to help start it, since its a top tank model it should get fuel instantly, check your H&L setting also to make sure there not closed. I'll try starting it tomorrow again. I'll keep you updated! |
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Post by NorthernLonewolf on Mar 30, 2024 14:05:51 GMT -5
Got a different problem with a different saw today, I'll see when I can start the 7-29. Probably not in a week or so, as I can't do it where I am now.
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Post by rarefish383 on Mar 30, 2024 14:37:22 GMT -5
I get a 3 pack of plastic syringes from Ace. It makes it easier to squirt it in the carb or some of the hard to reach plug holes. I wish I hadn't have sent my 7-29 to Australia.  |
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Post by NorthernLonewolf on Mar 30, 2024 15:48:45 GMT -5
It is indeed a beautiful saw, and a true beast! I have to see when I can get mine started... Right now, it looks like so. |
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Post by NorthernLonewolf on Apr 1, 2024 11:49:34 GMT -5
I tried pulling the starter rope with the ignition switch off, and I was able to do it today. Not on the same location though, as I was outside before, and couldn't really get a firm footing. Now I was able to crank it, but it sounds like the recoil spring isn't quite right. It sounds like it slips when I carefully retract the rope... It gives 125 PSI of compression. Attachments:
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Post by rarefish383 on Apr 1, 2024 17:44:58 GMT -5
I've had the big old ones start and run OK, down to 90 PSI, never lower than that.
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Post by NorthernLonewolf on Apr 1, 2024 20:52:19 GMT -5
Thanks for the info. I was a bit concerned about the reading... but 125 seems fine then.
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Post by rarefish383 on Apr 2, 2024 16:53:42 GMT -5
I have about 70 old saws and can't keep them running, they just sit on the shelf and look pretty. If they have enough PSI to run, I'm happy. I have new saws for real work. But, I still have my Dad's first Super 1050 with a Tilly carb. It was blowing about 125. I took it to a Get To Gether in PA. Most of the guys had newer hot rodded saws. But, with some of the newer out of the box big saws, the 1050 flat out walked the dog on them. I road up with a friend and had to put the 24" bar on it, the 36" wouldn't fit in his car. The most common response I got was, DAMN that thing is loud, and, you need a longer bar. I don't know what the spec on compression is, but I'm good with 120-125.
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Post by NorthernLonewolf on Apr 5, 2024 11:14:22 GMT -5
A bit rainy here for a couple of days now... shortly after the snow. Hopefully I'll be able to get it started tomorrow.
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Post by NorthernLonewolf on Apr 6, 2024 6:33:32 GMT -5
Trying to figure out how the carb works... it says part number "2733902". It kooks to be a Tillotson carburetor, buI can not figure out which is the low and high speed screws...
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Post by NorthernLonewolf on Apr 6, 2024 17:20:55 GMT -5
Got it to fire today when I shot some fuel directly into the cylinder spark plug hole. Gonna give it another try tomorrow.
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Post by NorthernLonewolf on Apr 7, 2024 9:23:58 GMT -5
I have about 70 old saws and can't keep them running, they just sit on the shelf and look pretty. If they have enough PSI to run, I'm happy. I have new saws for real work. But, I still have my Dad's first Super 1050 with a Tilly carb. It was blowing about 125. I took it to a Get To Gether in PA. Most of the guys had newer hot rodded saws. But, with some of the newer out of the box big saws, the 1050 flat out walked the dog on them. I road up with a friend and had to put the 24" bar on it, the 36" wouldn't fit in his car. The most common response I got was, DAMN that thing is loud, and, you need a longer bar. I don't know what the spec on compression is, but I'm good with 120-125. I'm still trying to figure out how the carburetor works... there's two adjustable screws that I've found... |
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Post by footstep on Apr 7, 2024 10:27:50 GMT -5
I have about 70 old saws and can't keep them running, they just sit on the shelf and look pretty. If they have enough PSI to run, I'm happy. I have new saws for real work. But, I still have my Dad's first Super 1050 with a Tilly carb. It was blowing about 125. I took it to a Get To Gether in PA. Most of the guys had newer hot rodded saws. But, with some of the newer out of the box big saws, the 1050 flat out walked the dog on them. I road up with a friend and had to put the 24" bar on it, the 36" wouldn't fit in his car. The most common response I got was, DAMN that thing is loud, and, you need a longer bar. I don't know what the spec on compression is, but I'm good with 120-125. I'm still trying to figure out how the carburetor works... there's two adjustable screws that I've found... Can you post up pics of the carb with the adjustment screws? |
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Post by NorthernLonewolf on Apr 7, 2024 11:16:58 GMT -5
Sure. Here they are.   |
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Post by NorthernLonewolf on Apr 7, 2024 16:05:59 GMT -5
According to the IPL of the Tillotson HP-19B, this may be the low speed screw? Not sure...  EDIT: I might need to switch carb to the other one from the 20MCS-cylinder one that I got first, as the previous owner said it fired on prime, but I will pour some fuel into the cylinder tomorrow and try getting it started that way. |
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Post by NorthernLonewolf on Apr 7, 2024 23:41:26 GMT -5
I found a diagram of the Tillotson HP-19B carburetor at Mike Acres Chain Saw Collector's Corner. Now I will hopefully be able to get that tuned properly and get it running.
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Post by footstep on Apr 8, 2024 8:12:30 GMT -5
I dont think the tillotson carbs have adjustable h & l, I think they use old style fixed jets for fuel delivery, the large screw with the t handle looks to be an idle adjustment & the other apear to be standard hardware, if I were you try adjusting the larger one with the t handle and see if that help to start it and gives you a high idle, or if you have a spare carb in the same model, dissect it and see how it operates, I'll look around and try to find some info on the tillotson carb, you may want to reach out to Leon onlyhomelites & ask him, he's messed with plenty of these old saws & has way more knowledge about them than I do, send him pics along with your question & iam sure he'll be able to help you out more. |
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Post by NorthernLonewolf on Apr 8, 2024 13:22:56 GMT -5
I'll give this another try tomorrow. I did some tinkering basically all day today. Tomorrow will be another start attempt. No probs with the starter now. I took it off, and reassembled it back on and now it turns the engine over just fine. I did 3D print a shim (the thing between the pulley and the hub) but it was a tad too thick, so I cut it in half. Fits well on there now.
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Post by NorthernLonewolf on Apr 9, 2024 6:16:29 GMT -5
Also, the starter cover is now on there with the starter rope working fine. I will see if I can get fuel go from the tank to the cylinder without spraying into the cylinder, might be why it pops...
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Post by NorthernLonewolf on Apr 15, 2024 10:27:15 GMT -5
Changed spark plug, runs now. Except it won't stay running. Need to figure out what screw on the carburetor does what. Main adjustment screw and idle screw is all I get from the IPL.
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