|
|
Post by mangoman on Dec 31, 2021 22:32:31 GMT -5
Howdy folks, I've acquired what I think is some sort of old 900 series saw. I'm not sure what it is or if it is a combination of saws. Basically I want to make some smoke. I haven't measured the bore. Maybe I can try to do that through the exhaust port? Find out if it is 77 or 82cc? It has a hole rubbed through the casting into the fuel tank where the bar mounts. I cleaned it up as best as I could and am hoping good ol' JB weld will help it. It is missing a fin on the flywheel. I'm thinking I should probably replace that and skip unnecessary wear and tear on the crank bearings and me? It has what looks like a chunk of plastic jug behind the oiler on the clutch side? I didn't bother pulling that apart. Should I? I thought leave well enough alone? What is the aluminum fitting upper left inside the airbox supposed to be? I think it is 7/16"? It pukes gas when I tip the saw so fuel is in that area. Is it a breather or? Doesn't seem right.... I cleaned it up as best as I could. Brake cleaned and comp air in the tank to flush it out. Am planing on buying a fresh carb, air filter and cover to replace my broken stuff and need for a fresh carb (or kit) Needs all the grommets/boots for intake box. Clutch drum is worn out. I was given a new one but it is 7 tooth versus 8 tooth. Would that be not such a great idea? It has a 24" bar that I think I might retain for now. Might was to go to 32 or maybe 36 later if it would pull it. The bore and piston/rings look ok and it comp tests at 165psi. I've never rebuilt a little two stroke before. I gather I need to not have air leaks to prevent lean mixture. What should I be replacing and/or testing? Much thanks for the input and patience. I'm looking forward to having a runner here. I would like to use it occasionally for bucking firewood, maybe fell a tree here or there. I do have a 461 Stihl, a XL75 runner, a 76 that I needs a little work, an MS291 and a Husky 357XPG too. Attachments:
|
|
|
|
Post by mangoman on Dec 31, 2021 22:35:36 GMT -5
More interesting stuff. Attachments:
|
|
|
|
Post by mangoman on Dec 31, 2021 22:53:19 GMT -5
More stuff Attachments:
|
|
|
|
Post by kevinm1980 on Jan 1, 2022 12:09:57 GMT -5
That's the fuel vent in air box, sounds like it need replacing.. Or cleaning think its more a ball check valve..but not sure, 7 tooth sprocket is fine you Wil loose chain speed but gain torque, that plastic piece is a sawdust shield and should be there, if you are rebuilding get new crank seals skf 6119 both sides, can order them online from motion Canada, as for carb just Ger a rk-23hs kit and rebuild it, hopefully yours has the original hs-26a and was not governed.. Most of the later saws in this series had governed carbs which is less than ideal
|
|
|
|
Post by kevinm1980 on Jan 1, 2022 12:11:19 GMT -5
Also you could break a fin opposite of one that is missing to balance it out.. Not ideal but it was an all to common practice back in the day
|
|
|
|
Post by onlyhomelites on Jan 1, 2022 21:42:09 GMT -5
The fuel vent can be repaired...the end will pop out so the duckbill valve can be replaced with a standard 69451.
|
|
|
|
Post by mangoman on Jan 2, 2022 23:24:29 GMT -5
The fuel vent can be repaired...the end will pop out so the duckbill valve can be replaced with a standard 69451. Thanks! I will have a little look see! |
|
|
|
Post by mangoman on Jan 2, 2022 23:30:22 GMT -5
That's the fuel vent in air box, sounds like it need replacing.. Or cleaning think its more a ball check valve..but not sure, 7 tooth sprocket is fine you Wil loose chain speed but gain torque, that plastic piece is a sawdust shield and should be there, if you are rebuilding get new crank seals skf 6119 both sides, can order them online from motion Canada, as for carb just Ger a rk-23hs kit and rebuild it, hopefully yours has the original hs-26a and was not governed.. Most of the later saws in this series had governed carbs which is less than ideal Thank you. Ok I think I will run that and maybe it will be better if I want a 32" bar on it. Am I getting greedy? 😬 Thank you for the seal part numbers. I greatly appreciate that. I'm not sure which carb it is but I will try to look and see if I can find some numbers. |
|
|
|
Post by mangoman on Jan 2, 2022 23:33:55 GMT -5
Has anyone done a repair to the cast aluminum that went into the fuel tank with JB Weld? My bro said he tried it with our Dads McCulloch and failed. I was wondering if I should just cut to the chase and give it a tank liner before running it? Thanks again
|
|
|
|
Post by blythkd on Jan 3, 2022 7:53:56 GMT -5
I wouldn't have much faith in a JB Weld repair on that tank hole, and I like JB Weld. It usually leaks when used to patch a gas tank and in that spot, it'll have a hard time even staying attached, I'd guess. It will have a rough life right next to the chain.
Even if you pour some tank sealer in it, you'll need a patch over the hole first.
Assuming that saw is a 9xx? 32" bar will be about all it needs. 925's were sold with up to 36" bars but if you sink one into a full 36" cut, it's loaded.
|
|
|
|
Post by blythkd on Jan 3, 2022 8:09:08 GMT -5
I got curious on the fuel tank vent so I went and browsed some IPL's. That tank vent was used on 901, 902, 903 and 904 as well as others. It was also used on some 800 series saws but I don't think your colors are right for those.
|
|
|
|
Post by kevinm1980 on Jan 3, 2022 10:17:56 GMT -5
Has anyone done a repair to the cast aluminum that went into the fuel tank with JB Weld? My bro said he tried it with our Dads McCulloch and failed. I was wondering if I should just cut to the chase and give it a tank liner before running it? Thanks again Jb Weld then red coat the tank maybe? |
|
|
|
Post by mangoman on Jan 3, 2022 12:45:45 GMT -5
I got curious on the fuel tank vent so I went and browsed some IPL's. That tank vent was used on 901, 902, 903 and 904 as well as others. It was also used on some 800 series saws but I don't think your colors are right for those. Thanks for looking into that. Yes it is a hostile environment for that JBW for sure. I did do my best the other day to prep and patch it. The PO has stuffed a chunk of rubber in there. It's definitely not this saw's first day on the job! I will put crank seals in it and I'm thinking I will do the red kote seal although I'm having a hard time finding it available here in British Columbia. I ordered a carb with a fresh kit, top cover, linkages and grommets, filter and flywheel for the 900 whatever it is and a couple air filters for my 76s. Are the 75/76s overachievers or what's the deal? A 58cc saw pulling 24" bar and a 77 maxed out with a 32"? |
|
|
|
Post by kevinm1980 on Jan 3, 2022 14:14:54 GMT -5
Xl-76 are over achievers.. Lol, I have a 36" on a sxl-922, does fine but here in Alberta I'm just cutting white spruce, lodgepole pine and tamarack, and nothing over 28" in diameter, could be they were co side ring Harwood when they maxed it out at 32" or Maybe that was the largest bar then made for that bar pattern at the time
|
|
|
|
Post by 5terrysupersaws on Jan 3, 2022 15:08:00 GMT -5
Sampled the 'grease flavor' and fairly confident it's a Terry built XL-902AM minus the blue throttle handle...
|
|
|
|
Post by mangoman on Jan 3, 2022 23:57:47 GMT -5
Thank you fellows for the pointers. I looked at the acres sight at a 902AM. Nice looking saw! I have no idea what this one would be. I have a feeling it's a mish mash of machines. I guess in the end I just hope to make run strong. Maybe I can measure the bore through the exhaust port? Confirm its a 77cc variant? Kevin, I would be primarily cutting White Birch, Douglas Fir and Western Larch here in southern BC. Maybe I'll just stick with the 32". I have a 28 on my Stihl 461 which I do max out from time to time for sure here with big Fir. The Homelite is (obviously) for fun. I'm not in any real urgent production hurry here. But no one likes to be cutting forever and a day. I do want my iron to work as it should  On another subject kinda going back to the crank seals, does anyone know the number for 75/76 seals? I'd like to replace them in both of mine. Thanks a bunch. Your input has been invaluable. |
|
|
|
Post by kevinm1980 on Jan 4, 2022 15:46:15 GMT -5
On another subject kinda going back to the crank seals, does anyone know the number for 75/76 seals? I'd like to replace them in both of mine. Thanks a bunch. Your input has been invaluable. The flywheel side is the same 6119, which is a handy seal to have on hand, used on many saws.. The PTO side was originally a 58308 IIRC, I happen to has nos of those bit think I have read on here that skf 6130 works for drive side one the xl-1xx/7x saws as well as super xls |
|
|
|
Post by mangoman on Jan 11, 2022 23:57:11 GMT -5
Well,
A handful of my parts showed up. I bought a rebuilt carb and a bunch of knick nacks, top cover, air filter from "weka58" on eBay. Stuff showed up quite quickly and all as I has hoped. I also got a flywheel that was described as for an XL922/925 and it turned out that is not what I needed! It showed up very quickly as well. Oh well, I'll make do with the old. I will break an adjacent fin to hopefully balance it out. I am planning to replace the crank seals. Now it looks to me as if I need to take the whole bottom end apart, basically disassemble the whole thing. I've never had a small two stroke apart so I could be wrong...feel free to correct me if I am wrong. Also was wondering what else I should replace while I have the whole dang thing apart...? Rings, rod bearing, crank bearings...where does it stop? Maybe I can turn this $100 saw into a $1000 saw yet 😆
|
|
|
|
Post by blythkd on Jan 12, 2022 7:40:13 GMT -5
With 165 pounds of compression before it's even started, I'd probably just leave the internals alone for now.
So why are you planning to tear it all apart? Just to put the crank seals in?
|
|
|
|
Post by mangoman on Jan 12, 2022 9:00:00 GMT -5
With 165 pounds of compression before it's even started, I'd probably just leave the internals alone for now. So why are you planning to tear it all apart? Just to put the crank seals in? Thank you for the reply. Yes the main idea is peace of mind with the crank seals. Honestly, I am green as green can be with small two strokes and I've never had a saw apart. I'm a mechanic but heavy equipment and I dabble in pickup trucks when I have to, so I'm just learning. My XL75 runs nice but the idle is erratic. Ive been through the carb and all and was directed that crank seals can be a cause. I don't want to lean out any of my saws and they are all unknown history and obviously old. I thought I'd just change them all. |
|
