Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: Cut4fun . on July 17, 2013, 04:03:12 pm

Title: Stihl 046 460
Post by: Cut4fun . on July 17, 2013, 04:03:12 pm
Just had what I think is a stihl 046 with stihl ms460 tank etc on it dropped off for a rebuild.  Ex tree service saw.  Pics as seen through pm's.

I tell you that new HD2 filter falls apart easily it looks like.

http://www.comwavz.com/~winland/MS460/MS460parts1.jpg[/img]
(http://www.comwavz.com/~winland/MS460/MS460parts2.jpg)
http://www.comwavz.com/~winland/MS460/MS460parts3.jpg[/img]
http://www.comwavz.com/~winland/MS460/MS460parts4.jpg[/img]
http://www.comwavz.com/~winland/MS460/MS460parts5.jpg[/img]
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 18, 2013, 04:00:22 pm
Found what I believe killed this saw.  Dumped fuel from tank and went to look at fuel filter and line.  Hmmmmm no fuel filter inside tank anywhere.  So I pull the carb off knowing I am going to find it full of wood fines etc. Yep the inlet  screen was jam packed along with other carb orifices.  Which in my mind created lean condition and stuck the rings just that little bit shown in pic about 1/4" wide score area. I'll get better pics later on bench. Oh and that POS fallen apart stihl HD2 air filter couldnt have helped matters.

The piston still has witness lines, cylinder just a hair of transfer that will clean up, crank bearings looked and feel good. De-comp button bent to where it is either stuck in or out using force.

Oh plus the owner has opted for that DP muffler set up I used on the 440. This 046 had the back half that needs the cage cut out and plain cover. 

Title: Re: Stihl 046 460
Post by: Cut4fun . on July 18, 2013, 05:03:55 pm
Going by what the owner of this saw told me.   1 dealer had it for 2 weeks and 1 a month and looks like I got more done and found out in a hour then both combined.   Without a $700 estimate to fix like the others.   :o ::) :o  Thats just so wrong in so many ways  IMO.   ;)

[img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown002_zps5cb863b9.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown001_zpsfc5c6e77.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown001_zpsfc5c6e77.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown003_zps34a1da0d.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown003_zps34a1da0d.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown004_zps77e564a6.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown004_zps77e564a6.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown006_zpsd86ee998.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown006_zpsd86ee998.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown005_zpsd308817a.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown005_zpsd308817a.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown008_zpsc293dabf.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown008_zpsc293dabf.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown007_zpsd7da069f.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown007_zpsd7da069f.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/034036/046teardown009_zps3bad45dd.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/034036/046teardown009_zps3bad45dd.jpg



 (http://s59.photobucket.com/user/doemaster789/media/034036/046teardown002_zps5cb863b9.jpg.html)
Title: Re: Stihl 046 460
Post by: Al Smith on July 18, 2013, 05:22:48 pm
From the picture that piston doesn't look that bad . I've saved them a lot worse than that .

Lay the sand paper to it ,it might clean up .

It looks like it got scorched on the outlet side which makes sense if it was gas starved .Might not have done anything if the cage had been cut out except run lousey .

From the pic the intake side doesn't appear bad so it must not have eaten a bunch of dust
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 18, 2013, 07:43:59 pm
From the picture that piston doesn't look that bad . I've saved them a lot worse than that .



Yep that piston will be a piece of cake to clean up IMO2. So will the cylinder.  The ring groove was marred closed some but I have fixed way way worse in the past.
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 20, 2013, 03:58:50 pm
Cylinder and piston is ready for the new rings and to put this puppy back together. Finished up going through other side of carb and cleaning the tank vent up too. 

I bet I know why no filter was on new tank on this 046 that helped kill it. The new 440 tank I got came with line installed and no filter. They must have assumed it had filter and just installed tank.
Title: Re: Stihl 046 460
Post by: Al Smith on July 20, 2013, 08:25:23 pm
Until you mentioned that fact I had over looked the flippy on the fuel tank from the picture.
Title: Re: Stihl 046 460
Post by: trx250r180 on July 23, 2013, 06:35:08 pm
looks like they been soaking that filter in gas to clean it ,loosened up the glue ?
Title: Re: Stihl 046 460
Post by: Cut4fun on July 23, 2013, 06:44:51 pm
looks like they been soaking that filter in gas to clean it ,loosened up the glue ?

No clue on that.  But Brad aka blsnellling said he is seeing the new HD2 coming unglued down his way too.
Title: Re: Stihl 046 460
Post by: Cut4fun on July 30, 2013, 06:04:05 pm
Good thing I had my 16" 3/8 bar left from my 066 to make some test cuts today (about 20 mins worth).   ;D

[img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/MS660066/rebuilt046001_zpsba4bfc11.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/MS660066/rebuilt046004_zps73a7a7f1.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/MS660066/rebuilt046004_zps73a7a7f1.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/MS660066/rebuilt046003_zps043a400b.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/MS660066/rebuilt046003_zps043a400b.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/MS660066/rebuilt046002_zpseff836c5.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/MS660066/rebuilt046002_zpseff836c5.jpg
[URL=http://s59.photobucket.com/user/doemaster789/media/MS660066/rebuilt046005_zps3e6b8fd8.jpg.html][img width=700 height=525]http://i59.photobucket.com/albums/g289/doemaster789/MS660066/rebuilt046005_zps3e6b8fd8.jpg

 (http://s59.photobucket.com/user/doemaster789/media/MS660066/rebuilt046001_zpsba4bfc11.jpg.html)
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 30, 2013, 06:36:54 pm
Just comparing specs.  Hmmmmmmmmmm  Both new rebuilds with new rings too. 

stihl 046  76.5cc (4.67 cu.in) Bore: 52 mm (2.05 in
poulan 475  76.5cc 52mm bore




Stihl 046 owners manual   http://www.stihlusa.com/WebContent/CMSFileLibrary/instructionmanuals/046_Manual.pdf

Title: Re: Stihl 046 460
Post by: Cut4fun . on July 30, 2013, 07:09:51 pm
Noticed this 046 has a D combustion chamber. All 046 460 like that?
Title: Re: Stihl 046 460
Post by: cowroy on July 30, 2013, 07:24:50 pm
No they are not. I wondered the same thing, but I have two here now and the 046 has the d shaped combustion chamber and the 460 has a round one. Not sure if all 046's are D and all 460's are round but saying from what i have.
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 30, 2013, 07:30:13 pm
TL said the D shaped CC 046  is the better runners he thought. 
Title: Re: Stihl 046 460
Post by: cowroy on July 30, 2013, 08:28:10 pm
Just based off 044 cylinders, i always heard the D shaped ones ran better, so I was gonna use the D shaped one myself. This just makes mt mind up.
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 31, 2013, 07:22:32 pm
Looking at weight pics to compare too.  This look about right.  046 14lbs 12.4oz PHO

(http://www.pbase.com/wyk/image/137564856/original.jpg)

Title: Re: Stihl 046 460
Post by: jmester on July 31, 2013, 08:06:09 pm
That's a good looking saw.
Title: Re: Stihl 046 460
Post by: Cut4fun . on July 31, 2013, 08:10:01 pm
That's a good looking saw.

I just found that one on the net on a image search.  No clue who's.
Title: Re: Stihl 046 460
Post by: Cut4fun . on August 01, 2013, 02:22:50 pm
Can someone confirm my thinking. Is a 066 660 chain catcher the same as 046 460?  I havent dug into IPL's yet. 

 Realize that is another part this saw was missing. Should have caught it when looking for a lower dawg bolt replacement.
Title: Re: Stihl 046 460
Post by: Cut4fun . on August 01, 2013, 04:06:00 pm
Can someone confirm my thinking. Is a 066 660 chain catcher the same as 046 460?  I havent dug into IPL's yet. 

 Realize that is another part this saw was missing. Should have caught it when looking for a lower dawg bolt replacement.

Must be. My last one on hand from a 066 660.  Had to use another different bolt that was longer then the last one I found being the beginning threads are stripped out of the case.

Title: Re: Stihl 046 460
Post by: Cut4fun . on August 01, 2013, 04:10:20 pm
digging   1122 656 7700        11226567700



Fits the following models:

    Stihl 044, 046, 064, 066, MS 440, MS 441, MS 460, MS 640, MS 650, MS 660
Title: Re: Stihl 046 460
Post by: Cut4fun . on August 20, 2013, 03:44:17 pm
Noticed this 046 has a D combustion chamber. All 046 460 like that?

Founds some good info posted by Wiggs in KY on 046 460 cylinders.

((((((((There are several different 046/460 cylinders. The earliest 046's, they had the d-shape chamber, larger transfer ducts and larger upper transfers, coupled with more transfer duration.  The last one i put a wheel on, Going off memory here, was around 100/115/75. Very little blowdown. Stock for stock, they will walk the dog over the late model 460 jugs. Not even a contest....

Then they shrunk the upper transfers and tunnels and gave it more blowdown. Consiquently, the exhaust port got smaller when that happened. Finally they ditched the D-shape chamber, gave it even more blowdown, and a pencil sized exhaust port opening. ))))))
Title: Re: Stihl 046 460
Post by: Cut4fun . on March 16, 2018, 05:22:01 pm
Put a DP muffler cover set up on a 046  guy that said his dad bought new in 1994.  He got it with bad piston not running and redid it.

Also put a HD2 air filter, switched to KL200 40:1 and tuned with a 16" in the ash log.  Fun fun let'er rip potato chip.  8)
Title: Re: Stihl 046 460
Post by: 3000 FPS on March 16, 2018, 10:24:20 pm
Put a DP muffler cover set up on a 046  guy that said his dad bought new in 1994.  He got it with bad piston not running and redid it.

Also put a HD2 air filter, switched to KL200 40:1 and tuned with a 16" in the ash log.  Fun fun let'er rip potato chip.  8)

Yep I still have that one I got from Adam here.   Nice running saw.