gman
Collector wannabe
Posts: 16
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Post by gman on Jul 11, 2022 15:38:29 GMT -5
hi all. i am a newbie. and also new to homelites . i have a few stihls. but recently picked up 3 homelites and was hoping to at least get one to use . when i got them home. they all started but not so good . 2 were xl 12 and 1 was a super xl. i cleaned carbs on all 3 and the red one runs pretty good .anyway the blue xl12. cuts out when i rev her up .i will just concentrate on that one for now .
i cleaned carb and screen inside. the diaphrams seemed good. but changed them anyway. i did not pop welch plugs. but those passages seem clear from spraying carb cleaner through . reed valve seems good . gas cap duck bill is good .the fuel filter seems good also. but i ran it with out filter and no change . i do have filters on order fueline is good and not falling apart.
compression is 150. and i did a pressure and vac test and it held . cylinder and piston not scored. also. . like i said i am new to homelites. so any help would be greatly appreciated. thanks in advance. i will try to post pics and i did take a video. i will try to post. it seems like a fuel problem to me. but coukd it be a coil problem and i am barking up the wrong tree. ?
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 11, 2022 15:41:01 GMT -5
trying to figure out how to add photos. sorry i am technical illiterate lol
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Post by bobby167 on Jul 11, 2022 17:02:57 GMT -5
Could you post UT & Serial number. Sounds like it "could" be ignition problem.
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Post by edju1958 on Jul 11, 2022 19:12:03 GMT -5
Welcome to HoH! From your description it sounds to me like the condenser is wek/breaking down.Have you tried a new plug?
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 11, 2022 20:58:34 GMT -5
21672614.
i have not tried a new plug cause i was thinking fuel problem. but i am probably wrong
how can i post a video i will pull the fkywheel and take a look at ignition when i get a chance thanks i do like how they sound. like an old hot rod of chainsaws lol i always wanted an old homelite
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 20, 2022 21:08:43 GMT -5
hi all. update.
i checked condenser from youtube video
it seemed good but i replaced it anyway
and points needed adjustment
after it seemed better and did not die when revved up .
but now it seems hard to adjust
idle will be good for a while then go high
so seems like another problem.
thanks again for help
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 20, 2022 21:12:13 GMT -5
like i said before. i went through carb pretty well cleaned screen checked inlet valve. blew air through all passages. but i did not remove welch plugs. but i did blow air through needle valve opening. and they seemed clear. its a tillotson 96a.
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Post by undee70ss on Jul 20, 2022 21:30:06 GMT -5
hi all. update. i checked condenser from youtube video it seemed good but i replaced it anyway and points needed adjustment after it seemed better and did not die when revved up . but now it seems hard to adjust idle will be good for a while then go high so seems like another problem. thanks again for help Idle changing is most likely a air leak, probably needs crank seals. |
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 20, 2022 21:32:51 GMT -5
i did a pressure and vscuum test and they both held
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Post by onlyhomelites on Jul 20, 2022 22:07:20 GMT -5
If the carb is a Walbro SDC, it might be worth checking on the high speed check valve. It's under the welch plug on the high side. Here's my low-tech, unscientific check on a similar SDC:
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 21, 2022 6:40:14 GMT -5
thanks for video. your videos are very helpful. but i have a tillson 96a on that saw. is there a check valve under the welch plug ?
i did spray cleaner through the hole and it seemed clear like you suggested in another carb video
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Post by edju1958 on Jul 21, 2022 9:10:31 GMT -5
Sometimes a vac test will show your seals to be good,but they might still be bad.I've found the most common seal that goes bad is the flywheel side seal.The flywheel side seal is also the easiest one to replace IMO.
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Post by edju1958 on Jul 21, 2022 9:32:09 GMT -5
I just noticed that you said the carb is a Tilly 96A.Someone correct me if I'm wrong,but that carb is oversized for the saw.IIRC the 96A was used on 77 & 82cc saws.Depending on the color scheme (age) of your saws.I know on the blue & white saws it was common to have the Tilly HS1 through HS4.On the red saws it was more common to have the Walbro SDC 48 & SDC 62 carbs.The Tilly carbs were used,but not as common.
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 21, 2022 10:50:27 GMT -5
according to serial # it was made in 72. blue color
it surely is possible someone just popped in this carb
i picked up 3 saws for a decent price
the super xl has a tilly 179a in it
and the red xl12 has a sdc and it runs good
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Post by edju1958 on Jul 21, 2022 13:00:45 GMT -5
The SXL with the HS179A is right according to Acres' site.The XL-12 with the SDC sounds right too.The other saw with the HS96A isn't the right carb as far as I know.It'll run,but the saw will consume an excess amount of fuel & it won't burn it properly.If I'm not mistaken the 96A was used on the XL-902 (77cc),which is 20cc more than the SXL.Again,someone correct me if I'm wrong.
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Post by 5terrysupersaws on Jul 21, 2022 14:00:54 GMT -5
Tillotson HS-96A is the original carb, it was used on units built after SN:3351316 ( late 1970 ).
Refer to the SUPER XL IPL:24228 Revision 1, page 8, for an illustration of the carburetor.
Carb appears to have a channel screen and retaining ring under the .1875" welch plug.
SN:21672614 ... built: Thursday - June 15 - of '72
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 21, 2022 19:27:47 GMT -5
so the 96a is the right carb for that saw
i guess i should pop out welch plug and see if there is a blockage
the saw has 150 compression. and piston and cylinder look very good
unless the seals are bad even though they test good
it also bogs under load
like gas is getting cut off
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 21, 2022 19:31:32 GMT -5
Terry its not a super xl. its a xl 12 btw
thanks for all the input. i want to get it running good and give it to my son since it has the best comp.out of the 3 i bought
its funny. the red one has the lowest comp but runs really good. 120 comp
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gman
Collector wannabe
Posts: 16
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Post by gman on Jul 21, 2022 19:32:28 GMT -5
i just noticed it says collector wanna be. lol
funny and true
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Post by edju1958 on Jul 21, 2022 19:34:23 GMT -5
Yeah,sorry I spoke too soon without researching more.The XL-902 used a HS56A,not a 96A.
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