Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: Brentlee98 on March 25, 2018, 05:41:43 pm

Title: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on March 25, 2018, 05:41:43 pm
Need help.  I've replaced piston/cylinder, all new gas lines, new fuel filter, new spark plug, new carb, new primer bulb.  Has compression and spark.  Can't get the dang thing to fire.  I've torn whole thing apart to piston and cylinder 4 times to make sure everything was put together correctly.  I'm at a loss. Any thoughts/advice?
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on March 25, 2018, 05:49:05 pm
Is the plug getting wet trying to start?
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on March 25, 2018, 05:55:29 pm
Not at all.  Took spark plug out before and after.  Bone dry.
Title: Re: Husqavarna 455 Rancher won't start
Post by: 3000 FPS on March 25, 2018, 10:51:03 pm
Brentlee take some fuel mix and squirt it down into the carb throat and then hold the throttle wide open and see if it will pop.   

Repeat that at least a couple of times and if it will not pop pull the plug and see if it is wet or dry.   

Right now it sounds like it is not getting fuel.     Let us know what you find. 
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on March 26, 2018, 06:46:32 am
I meant to mentioned this in the original post, but it does fire on starting fluid.  Also, weirdest thing, I can switch the fuel lines on the primer bulb and suck air from gas tank and "push" air through carb and it will fire, but won't stay running.
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on March 26, 2018, 06:54:00 am
Dont use starting fluid IMHO. Use mix like Roger suggested.
Starting fluid has no lubricated for 2 strokes.

You sure you have your lines and carb kit in right orders?  You rebuilt carb or new carb right?
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on March 26, 2018, 08:37:34 am
Yes, I believe lines to carb are in right order.  Line comes from gas tank with fuel filter into bottom of carb and exits other side of carb into primer bulb.  Then from bulb to top of tank.  Primer bulb pulls through carb and exits top of tank.  I'll use gas mixture vs staring fluid in future.  Thanks.  I can attach photo tonight of the fuel line setup.  I replaced carb with new one vs rebuilding.  Saw reacts the same with old or new carb.
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on March 26, 2018, 10:26:27 am
husqvarna 455 ipl   http://s30387.gridserver.com/partsDiagrams/Husqvarna%20455%20Rancher.pdf

No air leaks anywhere? 
Title: Re: Husqavarna 455 Rancher won't start
Post by: deezlfan on March 26, 2018, 10:42:12 am
You should also make sure you stacked the gaskets and diaphragms in the proper order. If you place the gasket in the wrong position, it will not pump fuel. Here is an exploded view of the Walbro WTEA-1 which replaced the WTA-29A

https://walbro.force.com/parts/Comm_PartsServiceDetails?partId=a0Fo000000V5D05EAF
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on March 26, 2018, 11:12:03 am
Think he said he bought a new carb and that it does same thing with old carb or new.
Title: Re: Husqavarna 455 Rancher won't start
Post by: trail twister on April 05, 2018, 07:03:16 am
Wonder what happened with this saw. Hate these stories with no happy ending.

:D           Al
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on April 25, 2018, 07:51:54 pm
Guys,
  I'm back to report a happy ending.     ;).   After weeks of getting terribly frustrated, I finally figured it out. I've had this saw down to the last bolt multiple times.  Again, I'm fairly new to taking small engines apart (so don't laugh when I tell you what it was),  but I learn a lot in the process and don't easily give up.  Well, apparently, the head gasket stuck to the old cylinder when I replaced it.   Because of this, I didn't notice that it was missing and didn't notice all 5 times I took it apart and reassembled it.  Someone shared a parts diagram and I happen to notice the two part numbers for the gaskets.  Just got them in the mail today and had it together and running in 20 minutes (I'm a pro at reassembling this thing by now, lol).  Funny thing is, the saw is getting the same compression reading (120psi) as it was without the gaskets.  One of the reasons why I thought the cylinder was assembled correctly.  Anyways, thanks for the advise you all gave.  Wanted to share my experience in hopes you can recommend adding the head gasket to the next idiot. 

Brooks
Title: Re: Husqavarna 455 Rancher won't start
Post by: 3000 FPS on April 26, 2018, 12:29:36 am
I thought the Husqvarna 455 Rancher was a clam shell crankcase and it uses a type of O-ring to seal the two halves together.

So when you say head gasket I am confused.   

Check this link.   http://chainsawrepair.createaforum.com/husqvarna/455-rancher/40/
Title: Re: Husqavarna 455 Rancher won't start
Post by: trail twister on April 26, 2018, 04:42:04 am
Me too. I see no head gasket.

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjRveCfxdfaAhWl8YMKHU0tARwQjRx6BAgAEAU&url=https%3A%2F%2Fwww.jackssmallengines.com%2Fjacks-parts-lookup%2Fmanufacturer%2Fhusqvarna%2Fchain-saw%2F455-rancher-2005-03&psig=AOvVaw3je8TbhEj_I0Otz7xdOhmH&ust=1524818347717753


https://www.google.com/search?q=husqvarna+455+rancher+diagram&client=safari&channel=mac_bm&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiphPmLxdfaAhVHyYMKHQ8xDMMQ7AkITA&biw=1100&bih=597#imgrc=PTB2Ymk51AT3bM:


:D         Al
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on April 26, 2018, 07:02:04 am
Ok, maybe I'm using the wrong term.  There are two odd shaped, rubber seals that go on the right and left side of cylinder that I am calling a head gasket.  This seals the two clam shells.  Never noticed these when I took it apart the first time. 
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on April 26, 2018, 07:33:56 am
Sounds like the crank seals that fit outside of the  bearings.

husqvarna 455 460 ipl  2009 http://www.hsqintec.sk/vykres/455e460-09.pdf

2004 http://s30387.gridserver.com/partsDiagrams/Husqvarna%20455%20Rancher.pdf
Title: Re: Husqavarna 455 Rancher won't start
Post by: trail twister on April 26, 2018, 07:46:16 am
He is talking about part number 537 24 57-01     And
537 24 58-01

I believe they are base gaskets.

:D         Al
Title: Re: Husqavarna 455 Rancher won't start
Post by: Brentlee98 on April 26, 2018, 07:50:47 am
Absolutely.  Was just about to clarify the exact part numbers, but you beat me to it.  Thanks!
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on April 26, 2018, 09:41:28 am
He is talking about part number 537 24 57-01     And
537 24 58-01

I believe they are base gaskets.

:D         Al

Absolutely.  Was just about to clarify the exact part numbers, but you beat me to it.  Thanks!


Good deal.   :P 8)
Title: Re: Husqavarna 455 Rancher won't start
Post by: 3000 FPS on April 26, 2018, 11:13:16 am
are you sure it is not the transfer ports.
Title: Re: Husqavarna 455 Rancher won't start
Post by: Cut4fun . on April 26, 2018, 12:37:38 pm
are you sure it is not the transfer ports.

Roger I think they are talking about #6 and #7 in the IPL