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Post by Deleted on Jan 17, 2018 20:30:57 GMT -5
Earlier today I decided to take the muffler off my SXL-902 & see how it looked in there.I noticed that whoever owned the saw previously liked to try to turn the poor thing into a Frankensaw.There are 3 muffler screws that hold the muffler cap on,they should all be factory shoulder bolts,only one of them was.It must be they were out cutting & lost a screw,& then another.Instead of getting new bolts & lock-tite them in so they stay in,they put a course threaded bolt in one hole,& get this - they put a WOOD screw with a washer on it in the other hole.I don't know if I can save the muffler by re-tapping the holes.Even if I can re-tap it I know the muffler won't be able to take another factory shoulder bolt.
The piston & cylinder looked as shiny & smooth as a newborn baby's behind.I decided to take a compression test & I was disappointed.I only got 100psi.How much compression should an SXL-902 have? I got it to pop & run with just the fuel that I squirted into the carb,but I seriously doubt that I'd be able to cut with it.I know that the rings (I think there are 2) might be seized a bit on the piston,so I'm going to squirt some new formula PB Blaster into the cylinder & see what happens.That was a real let down today.
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Post by sweepleader on Jan 17, 2018 20:49:44 GMT -5
Try some 50/50% ATF/acetone in that cylinder. It works quite well at freeing stuck rings. Squirt in some, turn over a bit, more. Let soak, repeat, repeat. I have resurrected several "scrap" saws with it. I used Dexron but I doubt the type of ATF matters.
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Post by Deleted on Jan 21, 2018 12:35:56 GMT -5
I found a ring on Ebay Part # 55038-1.Is that the ring I'll need to replace on my SXL-902? I don't have any tags on the saw,so it's hard to figure out which ring/part # I'll need.I haven't re-checked the compression yet,but I'm betting that's why they quit using the saw.I was told that most of the saws in that XL family used a 2 in.ring.
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Post by Deleted on Jan 21, 2018 14:35:11 GMT -5
I went out to the garage & decided to take another compression test,it came up from 100# to 125#,so I put it back on the bench & squirted more PB Blaster into the cylinder through the plug hole.I took the muffler off & squirted more PB Blaster into the cylinder there.I pulled it over slowly & could hear hissing.I knew I was losing compression somewhere. That's when I took a closer look & discovered that I DO have a decompression valve on the saw! The decompression valve was leaking.Now,what I'd like to know is can I just put a plug in the place of the decompression valve?At this point I don't know if I can even find one.I don't have the linkage for it either & I don't have the throttle lock assembly either.This saw is beginning to bite me in the ass.
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Post by Deleted on Jan 21, 2018 15:16:26 GMT -5
I went out to the garage & decided to take another compression test,it came up from 100# to 125#,so I put it back on the bench & squirted more PB Blaster into the cylinder through the plug hole.I took the muffler off & squirted more PB Blaster into the cylinder there.I pulled it over slowly & could hear hissing.I knew I was losing compression somewhere. That's when I took a closer look & discovered that I DO have a decompression valve on the saw! The decompression valve was leaking.Now,what I'd like to know is can I just put a plug in the place of the decompression valve?At this point I don't know if I can even find one.I don't have the linkage for it either & I don't have the throttle lock assembly either.This saw is beginning to bite me in the ass. Can you match up the thread pattern and use a small bolt? These are the issues I found when I first stated collecting garden tractors, components missing that are no longer available and eBay sellers want a bunch if they even have them. |
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Post by Clasec on Jan 21, 2018 16:10:14 GMT -5
I was told a plug was made by Homelite. Maybe Leon or Joyce has one.
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Post by 5terrysupersaws on Jan 21, 2018 17:02:33 GMT -5
Looking at the IPL for a SXL-902 a decompression valve was not used.. and the handle assembly didn't have provisions for the operating linkage...A decomp. valve was used on the XL-903 and XL-904 part # A-65883 (Leon has one in stock),but the handle assembly is totally different..Your SXL-902 is perhaps a combination of two saws...at least the cylinder is off a XL-903-904...Plugging the hole or cleaning the old valve(to get it to seal) are good options...Compression pressure on a SXL-925 at normal operating temp. should be 155-185 psi..and the XL-903 used a 2-1/16" piston,rings part# 55537 (Leon has these as well) ... best of luck with your project..
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Post by Deleted on Jan 21, 2018 17:07:49 GMT -5
I have seen this on several occasions in just the short time I've been into Homelites, I haven't noticed it on other brands, but it probably happens as well, someone marries several types of saws together, Johnny Cash's song "I Got It One Piece at a Time" just started playing in my head. Hope you can block it off somehow.
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Post by sweepleader on Jan 21, 2018 17:47:10 GMT -5
If the valve is trash with no hope of repair, you could weld or braze or? it shut and use it for a plug.
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Post by Deleted on Jan 21, 2018 20:32:57 GMT -5
I have seen this on several occasions in just the short time I've been into Homelites, I haven't noticed it on other brands, but it probably happens as well, someone marries several types of saws together, Johnny Cash's song "I Got It One Piece at a Time" just started playing in my head. Hope you can block it off somehow. I've had my share of that crap on other brands as well.My problem is that sometimes I don't know when to call it quits.I guess I have the mentality of a dr."save,save,save"LOL |
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Post by Deleted on Jan 21, 2018 20:41:17 GMT -5
If the valve is trash with no hope of repair, you could weld or braze or? it shut and use it for a plug. Much easier to do what CLASEC & Leon said:go to the hardware store & get a plug to fit.On the 450 there's no decompression valve,that saw is 74 cc.I don't understand why they put a decomp.valve on the 902,that saw is 77 cc.Only 3 cc.difference.I really saw a good one when I got an old Monkey Wards featherweight,that saw was around 33 cc & they put a decomp.valve on that! Talk about a bunch of wooses.I can see putting a decomp valve on a saw when it gets up around 85 - 90 cc.Heck,my 540 doesn't have a decomp.valve on it (to my knowledge) & that saw is 88 cc! |
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Post by Deleted on Jan 21, 2018 20:53:16 GMT -5
If the valve is trash with no hope of repair, you could weld or braze or? it shut and use it for a plug. Much easier to do what CLASEC & Leon said:go to the hardware store & get a plug to fit.On the 450 there's no decompression valve,that saw is 74 cc.I don't understand why they put a decomp.valve on the 902,that saw is 77 cc.Only 3 cc.difference.I really saw a good one when I got an old Monkey Wards featherweight,that saw was around 33 cc & they put a decomp.valve on that! Talk about a bunch of wooses.I can see putting a decomp valve on a saw when it gets up around 85 - 90 cc.Heck,my 540 doesn't have a decomp.valve on it (to my knowledge) & that saw is 88 cc! Some of the 40cc Super EZ Autos had decompression valves as well. I would not be surprised if the 540 and newer model saws had automatic decompression valve built in. |
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Post by Deleted on Jan 21, 2018 23:39:58 GMT -5
I'll see if I can get a pic on here tomorrow of the dercomp.valve still in the saw with the top of the valve stem bent over.I took it out of the saw earlier & put it in a vise & tried to straighten the stem,but it'll never be right where it'll work properly again.In order to get the decomp.valve out of the saw I had to loosen the carb.bolts & take them out,then I had to take the oil lines off the oiler piston,then I had to take the mounting screws out of the oiler .That was to just take the decomp.valve out of the hole where it was mounted.What a royal pain.I hope I can get it all back together again where it'll work again.
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Post by Clasec on Jan 22, 2018 0:00:03 GMT -5
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Post by Deleted on Jan 22, 2018 10:05:40 GMT -5
Now I'm stuck between a rock & a hard place.Do I have a 902,or a 903?Do I get parts for a 902,or a 903? The saw had the decomp.valve on it,but it was missing the throttle lock assembly - I ordered that from Leon yesterday,but he didn't have the pin for it,only the bushing,spring,& e-clip.I bought the pin on Ebay yesterday.The saw was also missing the linkage arm as well,I didn't find that at Leon's,or Ebay.So I decided to just eliminate the decomp.valve entirely by plugging it.Once again I got ther pic on Flickr,but unable to get it on here.
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Post by Clasec on Jan 22, 2018 10:15:54 GMT -5
I may have a linkage arm. If you want me to look for it let me know.
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Post by Deleted on Jan 22, 2018 10:22:51 GMT -5
I'd like to keep the saw as original as I could,so yeah,if you can dig it up I'd greatly appreciate it.My son used to visit his mom & step dad when they lived down in Bemis Point.We only live a couple hrs.from each other.
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Post by Clasec on Jan 22, 2018 10:46:09 GMT -5
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Post by Deleted on Jan 22, 2018 10:51:54 GMT -5
Now I'm stuck between a rock & a hard place.Do I have a 902,or a 903?Do I get parts for a 902,or a 903? The saw had the decomp.valve on it,but it was missing the throttle lock assembly - I ordered that from Leon yesterday,but he didn't have the pin for it,only the bushing,spring,& e-clip.I bought the pin on Ebay yesterday.The saw was also missing the linkage arm as well,I didn't find that at Leon's,or Ebay.So I decided to just eliminate the decomp.valve entirely by plugging it.Once again I got ther pic on Flickr,but unable to get it on here. You probably have a Super XL-902, way different than a XL-902am. I would work off the Super manual from Leons |
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Post by Clasec on Jan 22, 2018 14:24:23 GMT -5
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