Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: darren_palms on January 14, 2013, 05:43:29 pm

Title: Husqvarna 2100
Post by: darren_palms on January 14, 2013, 05:43:29 pm
I've recently put a carb kit in my 2100 and I can't get it to run. The first start up it will run for 15 seconds then die. I try to adjust the L carb setting but no matter what I do the saw will start with the chock on but as soon as you take the chock off and try to give it throttle i won't take and dies. I've also tried running it with the chock on but it doesn't seem to want to run and the saw won't start with the chock off. When I pull the fuel line off its getting fuel to the carb. Is the fuel line pinching off when I try to run the saw?? Any suggestions?
Title: Re: Husqvarna 2100
Post by: mattinky on January 14, 2013, 07:31:10 pm
Are you sure you have the metering lever adjusted properly? No leaks in the intake tract?
Title: Re: Husqvarna 2100
Post by: darren_palms on January 15, 2013, 07:21:28 pm
The metering lever is flat and is set properly and there are no leaks. Is it a spark issue? Talked to a guy around it and he thought maybe that it wasnt getting proper spark...
Title: Re: Husqvarna 2100
Post by: man of stihl on January 16, 2013, 07:03:08 am
Does it have a bright blue spark?
Title: Re: Husqvarna 2100
Post by: darren_palms on January 17, 2013, 06:58:45 pm
Yes it has good spark...
Title: Re: Husqvarna 2100
Post by: darren_palms on January 20, 2013, 11:14:24 pm
Put in a Stihl fuel line on my 2100 and runs a lot better...waiting for the right fuel line. But i did some tuning on it and it throttles up great but at idle it will start to run on and I can't keep the chain from spinning, which its spinning pretty good. The idle screw is clear out and the L speed needle seems to be set pretty good. Are the clutch springs getting weak? Do i have an air leak somewhere?
Title: Re: Husqvarna 2100
Post by: 660magnum on January 21, 2013, 05:11:45 am
Talking about your problem over the Internet sometimes makes diagnosis difficult . . .

The typical RPM figure for idle speed is 3500 rpm. It would be nice if you had a tach?

The clutch typically engages above that rpm.

They usually will not idle reliably below about 3000 rpm

With the idle speed screw all the way out, and the saw still idles at a pretty good speed, makes me think Air Leak?
Title: Re: Husqvarna 2100
Post by: Al Smith on January 21, 2013, 05:57:05 am
The good thing is the fact that seals for a 2100 are relatively inexpensive .Now the saw is one cutting fool if you can just get it started .Why they never put a decomp on a saw of that size I'll never know .
Title: Re: Husqvarna 2100
Post by: HolmenTree on January 21, 2013, 11:47:32 am
Talking about your problem over the Internet sometimes makes diagnosis difficult . . .
I agree, if the saw is not on my work bench with my hands on it then I don't feel like I can be the best help. 

But I have to say some things are evident from past experience. Years back when I learned how to turn a computer on [not that long ago, ha ha] I was on Arbor Site and there was all this discussion on this OP's over rich problem with his 038 magnum.
 Well after about 6 pages of everyones advice I happened to turn my new computer on for the first time and I saw this muddle of advice.

Myself once owning a few 038s the 1st thing I thought of was the choke shutter spring built into the air filter was weak or stretched, probably from prying the filter apart to clean it. I knew this from past experience.
Well that was the problem and boy did I get a bunch of thankyou's .
Now the 038 choke shutter problem is old hat :D
Title: Re: Husqvarna 2100
Post by: Al Smith on January 21, 2013, 01:26:34 pm
They all have their own idioms or Achelles heels it seems .

I know on the 2100 it uses a rather large bore Tilley model HL and will flood very easily .That is one saw you do not want to be pulling over any more than you have to that I can assure you .

Although I've had mine for several years it hasn't been used much and as such I'm just now learning it's personality .Stubborn old Viking is what the thing is but it's a cuttin  fool once you get it started  .
Title: Re: Husqvarna 2100
Post by: darren_palms on January 21, 2013, 03:37:22 pm
The air leak could be true because I am using a Stihl fuel line just to see if it run...waiting on the right fuel line. Great saw though with lots of power.
Title: Re: Husqvarna 2100
Post by: Al Smith on January 21, 2013, 04:17:43 pm
Those replacement lines are about 20 bucks . I tried to cheap out by using Taragon or whatever they call it .Caught the damned saw on fire and doused it under a water faucet .The pot licker wouldn't start for three days afterwards .

That danged old saw died in a barn on some island off of Washington state from a bad coil and sat for 20 years .I got it on the cheap from another site .Found a coil and replaced  the line ,used a Stihl fuel filter .The old line had turned to mush and the black crud would go right through the filter and clog the screen in the carb .

I pressure washed that tank at least three times to no avail .What fixed it was an OEM line and an old style large McCulloch filter that  catchs more stuff and has more surface area than the mesh Stihl filters .
Title: Re: Husqvarna 2100
Post by: darren_palms on January 21, 2013, 04:25:06 pm
Does anyone know how many types of mufflers were made for 2100s? Ive heard of the "jungle" muffler and I know about the standard muffler with the exhaust elbow but mine is different. It has two exhaust ports on the top of the muffler one on each side, with exhaust elbows. Ive looked at a lot of different 2100s in person and online and none of them have a muffler like the one thats on mine. Is it a dual ported muffler?
Title: Re: Husqvarna 2100
Post by: 660magnum on January 21, 2013, 04:31:44 pm
Mybe someone custom made it?
Title: Re: Husqvarna 2100
Post by: Al Smith on January 21, 2013, 05:58:23 pm
The model I have uses a welded muffler .I think they also  made a removable front cover type .

I think also there was the CD model and the XP model which I think used the thin ring piston .I'm certainly no Husqvarna expert though .
Title: Re: Husqvarna 2100
Post by: darren_palms on January 21, 2013, 09:01:04 pm
Muffler doesn't look custom looks stock and has a front cover that goes over the muffler just like other stock 2100 mufflers do...Ill have to post a picture soon.
Title: Re: Husqvarna 2100
Post by: Cut4fun on August 14, 2013, 04:34:41 pm
Anyone know what the PHO weight of a 2100 is? 

Was comparing a nice looking one  today with full wrap to a 084 half wrap and they felt about the same weights with about the same length bars. Didnt realize they were that heavy for a 99cc saw.  :o

husky 2100 http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/e833e76f0bf8658788256b5200199012?OpenDocument

husqvarna 2101 says  20.3lbs PHO  never mind if this is right. http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/a4ee2087d0b7b06e88256b52001aa3b7?OpenDocument

husky 1100  http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/409d748c41211a8288256b380015094b?OpenDocument

Title: Re: Husqvarna 2100
Post by: Eccentric on August 15, 2013, 03:11:38 am
I've ran a 1100CD and a 2101XP.  They didn't feel as heavy/bulky as an 084 to me, but I wouldn't be surprised if they were close in weight.  Remember that these saws have a large cast magnesium fuel/oil tank, and the 2100 and 2101 (but not the 1100 or 298) have a real auxiliary manual oiler (not a 'push to get max flow out of the auto pump' button).  That's gotta account for a good bit of weight.  The 084 has a plastic fuel tank and no manual oiler pump.
Title: Re: Husqvarna 2100
Post by: Cut4fun . on August 15, 2013, 10:28:43 am
2101 with half wrap 20.3lbs  so this 2100 with full wrap was about the same as 084. I'll take the extra 23cc with 084 for the  weight.

084 20.7lbs

088 21.8lbs

But if I was getting a 2100 with 30something bar and chain and full wrap for the price new owner STOLE this one for I could be happy with a 99cc and the weight.  ;)



Title: Re: Husqvarna 2100
Post by: Eccentric on August 15, 2013, 02:29:33 pm
Which 2100CD?  How much did it go for?
Title: Re: Husqvarna 2100
Post by: Cut4fun . on August 15, 2013, 03:56:52 pm
Local guy about hr north of me showed it to me yesterday. Was nice find.
Title: Re: Husqvarna 2100
Post by: winland on August 15, 2013, 08:10:01 pm
The 2100.  Came with a 32" bar and 2 chains.
It has started easily, runs pretty good and cuts big wood.
Title: Re: Husqvarna 2100
Post by: Al Smith on August 15, 2013, 08:55:20 pm
Those old duffers have a lot of power no doubt .In decent tune they'll scoot right passed a stock 066 .

To tell the truth I really never paid much attention to the weight thing on mine because it usually carries a 32" bar .Then again it really doesn't get used much .
Title: Re: Husqvarna 2100
Post by: Cut4fun on January 25, 2015, 10:08:14 am
SF has trouble posting to big of pics here and ask me to do it for him. His 2100 redo.

Quote from: squarefile
Thought I would share mine that was a barn find.

It was a project. Parts missing here and there.

I disassembled it for a good cleaning.

Muddobbers and mice called the cylinder fins home.

Title: Re: Husqvarna 2100
Post by: Cut4fun on January 25, 2015, 10:09:35 am
We figure year made 1981. But 00 is throwing me off for week made. Anyone decipher week made?
Title: Re: Husqvarna 2100
Post by: Eccentric on January 25, 2015, 04:39:36 pm
The silver tags can't be decoded for year/week like the later black tags can.  The 154 that's headed my way has a silver tag with '1984' stamped in it along with the SN.  They must have started stamping the year on the silver tags like that sometime before the switch to the black tags.  I'm guessing that means this saw is older than 1984 at least.  I'll have to look at my 2100 and 285 tags in the shop.....
Title: Re: Husqvarna 2100
Post by: mdavlee . on January 25, 2015, 08:31:43 pm
I was wondering about that.
Title: Re: Husqvarna 2100
Post by: Cut4fun . on March 31, 2015, 07:23:28 pm
in QC this month

https://youtu.be/IrFgc-WrLuU
Title: Re: Husqvarna 2100
Post by: bloodontheice on April 17, 2015, 07:23:43 pm
I've been piecing together a 2100 muffler saw this winter.
I'm not sure who originally built it but I should have it running in a week or two
Just waiting on the last few odds and ends.

Scored a NOS thin ring piston kit
(http://i6.photobucket.com/albums/y244/CaleSigas/_57_zps88c3c92a.jpg) (http://s6.photobucket.com/user/CaleSigas/media/_57_zps88c3c92a.jpg.html)

Fitting the double pumper HS carb
(http://i6.photobucket.com/albums/y244/CaleSigas/154_zpsbejkm2tt.jpg) (http://s6.photobucket.com/user/CaleSigas/media/154_zpsbejkm2tt.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/IMG_20150416_153945_zps1yl0i7cc.jpg) (http://s6.photobucket.com/user/CaleSigas/media/IMG_20150416_153945_zps1yl0i7cc.jpg.html)

Title: Re: Husqvarna 2100
Post by: EHP on April 17, 2015, 07:50:06 pm
where did you get the cylinder from
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 17, 2015, 07:54:09 pm
Seen them double pumpers on SA saws at shows.  6ci racesaw Cale?
Title: Re: Husqvarna 2100
Post by: bloodontheice on April 17, 2015, 08:49:31 pm
where did you get the cylinder from

It was in one of the boxes of parts Chris got from you, along with the carb.
I wasn't sure if was a saw you built.
Here's the inside of it.
(http://i6.photobucket.com/albums/y244/CaleSigas/083_zpsa4cf4b77.jpg) (http://s6.photobucket.com/user/CaleSigas/media/083_zpsa4cf4b77.jpg.html)
Title: Re: Husqvarna 2100
Post by: adam32 on April 17, 2015, 09:41:37 pm
Those fingers oughta flow plenty of fuel!!
Title: Re: Husqvarna 2100
Post by: aclarke on April 17, 2015, 09:50:12 pm
Looks good
Title: Re: Husqvarna 2100
Post by: EHP on April 18, 2015, 07:39:00 am
that cylinder was Hugh Forrest I believe cause thats the only 2100 cylinder and carb that should of came from here , it was built to race against his friends 394 that the friend built , losser had to buy supper for the other . Saw had to look some what stock so that is why the finger ports , if I could build any way I wanted forsure it would of gotten outside transfer ports cause they pass alot more air/fuel and it would of had a head on it . Carb passes a ton of fuel . I ran the saw and in 3 cuts over the block in 8 by 8 I was 1.89 sec. and John was no where near that , he was pissed cause the saw was on alcohol/nitro but he never said the saw could not be LOL, there should of been a muffler for it as well in the box of parts that had a pipe welded inside it for that cylinder
Title: Re: Husqvarna 2100
Post by: David Young on April 18, 2015, 11:42:34 am
Nice looking porting. Certainly extreme. I don't know if I would risk a nos thin ring on it.
Title: Re: Husqvarna 2100
Post by: Eccentric on April 18, 2015, 02:40:02 pm
Wild stuff.
Title: Re: Husqvarna 2100
Post by: aclarke on April 18, 2015, 02:44:28 pm
I've run both thick and thin ring in 181's and  can't see a difference.  Wonder if a single thick ring would be better? Not much ring support there...
Title: Re: Husqvarna 2100
Post by: Eccentric on April 18, 2015, 02:49:14 pm
I've ran both thick and thin versions in a work environment and couldn't really tell a difference in power between them.  Certainly wasn't high RPM race conditions.  The thin ring saw was a bit easier to pull over.
Title: Re: Husqvarna 2100
Post by: aclarke on April 18, 2015, 03:05:08 pm
Not sure why Husky used them on the 181 and 2100?  Seen a lot of 2100 work saws with failures from stuck rings (thin ring) Any insights on the thinking behind the thin ring pistons?
Title: Re: Husqvarna 2100
Post by: aclarke on April 18, 2015, 03:10:26 pm
Hard to say if the material type differences from thin to thick would be less/more resistance to getting hung up on a wide port?  Steel vs. Cast
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 18, 2015, 03:54:02 pm
Poulan used thin rings too. I have a 335 with rings stuck stuck stuck.  Going with thick ring 3450 330 piston in its place.
Title: Re: Husqvarna 2100
Post by: Eccentric on April 18, 2015, 07:43:50 pm
Less friction losses.  Also a bit less compression at cranking speeds (easier to start) supposedly....
Title: Re: Husqvarna 2100
Post by: EHP on April 18, 2015, 08:29:20 pm
the main reason for a thin ring is cause of rpms , once you get a motor to turn enough rpms a thick ring will break and yes it will break all to hell , a thin ring can stand alot more rpms but what happens on even the 2100 thin ring piston is the ring land between the 2 rings will break out of the piston . Now I'm not talking a gas saw I'm talking alcohol/nitro , the best world for a racesaw is a single thin ring
Title: Re: Husqvarna 2100
Post by: EHP on April 18, 2015, 08:31:57 pm
Cale just look at Chris's 395 alcohol saw , on muffler it will run for ever , on pipe in 8 by 8 its ok but once you but it in say something bigger than 12 inch round the thick ring piston breaks just about ever run
Title: Re: Husqvarna 2100
Post by: Playinwood on April 18, 2015, 09:24:19 pm
C'mon Ed you know you love ground out boost ports lol
Title: Re: Husqvarna 2100
Post by: aclarke on April 19, 2015, 12:10:41 am
Ring flutter... 
Title: Re: Husqvarna 2100
Post by: EHP on April 19, 2015, 11:15:32 am
boost ports are junk but something they look great , outside transfers are way way better at making flow plus gives you enough room in the cylinder to make your ext and intake port the proper size , only problem with outside transfers is they need a way more fuel cause you put alot more air threw the motor so your going to need to do alot more carb work
Title: Re: Husqvarna 2100
Post by: bloodontheice on April 23, 2015, 07:57:18 pm
Got the 2100 put together and fired up today.
It was 35 degrees out so just fired it on pump gas, still surprised it even started.
This thing pumps a ton of fuel, with screws out 1/4 turn it was still rich.
Idled, reved up and restarted

It's got a 10 tooth on it and I've gotta cut a bar down to fit it.
It'll be a while before it's warm enough to run it on fuel.

(http://i6.photobucket.com/albums/y244/CaleSigas/003_zps4jg2pqzv.jpg) (http://s6.photobucket.com/user/CaleSigas/media/003_zps4jg2pqzv.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/2100_zps4tv1tk7f.jpg) (http://s6.photobucket.com/user/CaleSigas/media/2100_zps4tv1tk7f.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/004_zpsb7dmtnbp.jpg) (http://s6.photobucket.com/user/CaleSigas/media/004_zpsb7dmtnbp.jpg.html)

(http://i6.photobucket.com/albums/y244/CaleSigas/002_zpsldyl5gdv.jpg) (http://s6.photobucket.com/user/CaleSigas/media/002_zpsldyl5gdv.jpg.html)

Title: Re: Husqvarna 2100
Post by: man of stihl on April 23, 2015, 08:15:46 pm
Looks good Cale!
Title: Re: Husqvarna 2100
Post by: aclarke on April 23, 2015, 10:39:30 pm
Surprising an alky carb will run at all on gas
Title: Re: Husqvarna 2100
Post by: adam32 on April 24, 2015, 10:05:13 am
Surprising an alky carb will run at all on gas

Very surprising. Especially to rev up and also idle.
Title: Re: Husqvarna 2100
Post by: 660magnum on April 24, 2015, 10:16:10 am
Walbro sells a special carb for 25-30cc model airplane engines the WT-499 that can be adjusted to run Alcohol as well as gasoline.

It was made up years ago for the Zenoah G23 alcohol model airplane engine but just happens to work fine on gasoline if the needles are closed down some.

Those Zenoah alcohol engines didn't work out so well as the bearings would turn to rust on the inside.

But the WT-499 is still around. It has a 27/64" (11.11mm) venturi

http://www.davesmotors.com/walbro-wt-499-alcohol-carburetor.html
Title: Re: Husqvarna 2100
Post by: bloodontheice on April 24, 2015, 10:42:16 am
Surprising an alky carb will run at all on gas

Very surprising. Especially to rev up and also idle.

More of I blipped the throttle it reved a little and came down and kept running.

And it was fighting itself from flooding out.

I just was checking that it would start, run and didn't have any serious issues, since it was
a pile of parts that I had put together.


Title: Re: Husqvarna 2100
Post by: 660magnum on April 24, 2015, 11:05:46 am
Some people try to run their alky saws a little on gasoline to try to get the alky out of them before putting on the shelf.
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 24, 2015, 12:13:42 pm
Surprising an alky carb will run at all on gas

Adam my 5000 with external boost ports had a MVP 272 100 alky carb.  I was able to run saw on gas just off the seats from what I remember on settings. Saw ran great on gas as that was what it was built for. Then later switched to Nitrodine and carb was able to flow 12% to 15%.  Never could try the 30% like the 262 liked.
Title: Re: Husqvarna 2100
Post by: aclarke on April 24, 2015, 02:26:28 pm
That's interesting. I've tried that on a few of my alky saws to no avail.  Compromise at best IMO...
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 24, 2015, 02:42:29 pm
Thats how I could run the 5000 in the gtg racing. Had to be a gas saw but run what you brung.
Title: Re: Husqvarna 2100
Post by: aclarke on April 24, 2015, 03:10:16 pm
Kev was that a Marcel saw?
Title: Re: Husqvarna 2100
Post by: EHP on April 24, 2015, 07:20:17 pm
Cale if everything is the same parts I had I ran a 11 tooth on it , is there a pipe in the muffler ? if not put 1 in it . That carb should be the one but it may not be so becarefull, there was alot of parts in those boxs and from here I cannot tell you forsure what that carb was for
Title: Re: Husqvarna 2100
Post by: bloodontheice on April 24, 2015, 07:56:05 pm
Cale if everything is the same parts I had I ran a 11 tooth on it , is there a pipe in the muffler ? if not put 1 in it . That carb should be the one but it may not be so becarefull, there was alot of parts in those boxs and from here I cannot tell you forsure what that carb was for

I'm keeping everything on the side of caution with this since it was a bunch of parts without knowing if
it all belonged together. The muffler already has the pipe in, I wasn't sure if it'd run an 11 tooth
so went safe and got the 10. Everything looked like it belong together but you never know.
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 24, 2015, 08:57:02 pm
Kev was that a Marcel saw?

It was the Marcel copied cylinder without doing the 2 piece head.
Title: Re: Husqvarna 2100
Post by: EHP on April 24, 2015, 10:05:45 pm
then thats the proper muffler and by looking at your picture of the carb I'm thinking it is as well
Title: Re: Husqvarna 2100
Post by: Cut4fun . on April 25, 2015, 10:21:41 am
@bloodontheice   

Cale check your PM's here. Couple of us trying to get hold of you. Heard a some even calling and cant reach you at the shop.   :o ???