The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

FARMA


Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems




Author Topic: Husqvarna 55Rancher Won't Rev Up as Before  (Read 788 times)

0 Members and 1 Guest are viewing this topic.

Offline sonnyboy53

  • member
  • *
  • Posts: 13
  • Age: 66
  • Location: Minneapolis
  • Gender: Male
    • Share Post
Husqvarna 55Rancher Won't Rev Up as Before
« on: April 08, 2018, 12:16:28 PM »
I've had a Husky 55Rancher for a little over a year and it's been a great saw.  A month or two ago, it would not rev up as it once did and it will kill more often than not.  I worked on saws for years and so I thought I had seen it all but this one's got me stumped. The saw starts fine cold and restarts OK when warm.  It idles & will get up to about half speed but that's it.   This is what I've tried so far:  cleaned the carb (Walbro not Zama) & installed new kit (no difference in operation), checked compression (135psi), checked crankcase for vacuum & pressure (no leaks), checked fuel tank vent (fine, not blocked), checked impulse grommet (seemed OK but didn't replace), checked muffler for carbon build up (found none).  I have not bought a new ignition module but am leaning in that direction as that's about all I can think of. 
Before doing that, can any of you think of anything I've over looked or that I should go back to & recheck?

Offline mike_belben

  • Senior Member x2
  • *****
  • Posts: 4535
  • Location: Middle TN
  • Pulp Friction
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #1 on: April 08, 2018, 04:45:20 PM »
Youve tuned carb to no avail?


Gotta pressure test it.  

Build a blank off plate for the muffler with a piece of sheetmetal and a rubber inner tube cut into a gasket.  Use your compression tester adapter to rig up a way to put air into plug hole.  Dont forget to pull schrader out.  The intake is a pain to block off if its the round boot style.  Spray soapy water while you pump it up to look for leaks around crank seals and intake boot, base area etc.  Thats a clamshell right?  


Otherwise id say be sure the float tab is adjusted right.  Tanks vented, fuel pickup filter isnt full of algae and is opening. Lines not turning to dust etc
Revelation 3:20

Offline Tin Horse

  • Full Member x2
  • ***
  • Posts: 134
  • Location: Ontario, Canada
  • Gender: Male
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #2 on: April 08, 2018, 05:58:57 PM »
My Dolmar 5105 did the exact same thing. Less than 2 years old. Took it back to my dealer and he said it was the coil. $200.00 plus and it's ok now. Never had a coil fail. He says it happens a lot now.
Bell 1000 Wood Processor. Enercraft 30HTL, Case 580SL. Kioti 7320.

Offline sonnyboy53

  • member
  • *
  • Posts: 13
  • Age: 66
  • Location: Minneapolis
  • Gender: Male
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #3 on: April 08, 2018, 06:39:34 PM »
Mike:
As I said, I have done both a pressure & vacuum test on the crankcase, checked the fuel tank vent and I didn't mention it in the original post but the fuel filter & lines have been replaced.  It's not a clamshell design-the jug sits in the crankcase and the bearings & seals fit into each half of the crankcase.  Thanks anyhow

Offline dougand3

  • Senior Member
  • ****
  • Posts: 480
  • Location: North Alabama
  • Gender: Male
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #4 on: April 09, 2018, 10:20:40 AM »
You've checked most all items. Could be coil. May be carb. You try a new carb. Clones of WT-170 are readily available.
Husky: 372xt, 272xp, 61, 55 (x3)...Poulan: 315, 4218 (x3), 2375, 2150, 2055, 2000 (x3)...Stihl 011AVT...Homelite XL...Saws come in broken, get fixed or parted, find new homes

Offline wild262

  • Full Member x2
  • ***
  • Posts: 190
  • Age: 60
  • Location: NE, Missouri
  • Gender: Male
  • I'm new!
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #5 on: April 09, 2018, 12:26:33 PM »
              I would check or swap coil if I were you, and make sure no wires are shorting out on the case or cyl. somewhere.  Maybe flywheel key.

Offline sonnyboy53

  • member
  • *
  • Posts: 13
  • Age: 66
  • Location: Minneapolis
  • Gender: Male
    • Share Post
Re: Husqvarna 55Rancher Won't Rev Up as Before
« Reply #6 on: April 09, 2018, 05:47:07 PM »
With just about everyone mentioning the coil, I think I'm going to look at that.  The Walbro WT-170 is a replacement as the saw had the original Zama on it when I got it.  I've had better luck with Walbros.
Thanks for the help & I'll keep you posted.


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

moved
MOVED: Husqvarna 55Rancher Won't Rev Up as Before

Started by Roxie on Forestry and Logging

0 Replies
281 Views
Last post April 08, 2018, 06:30:36 PM
by Roxie
xx
Switching from Solo 651SP to 55Rancher/353

Started by konrad695 on Chainsaws

4 Replies
2744 Views
Last post October 25, 2006, 02:22:13 PM
by SawTroll
xx
Husqvarna 285CD & Husqvarna 375K concrete saw

Started by Coach on For Sale

2 Replies
2105 Views
Last post June 25, 2014, 12:30:04 AM
by hacknchop
xx
272 husqvarna

Started by Timbercruiser on Chainsaws

8 Replies
1465 Views
Last post July 02, 2014, 08:20:35 PM
by CTYank
 


Powered by EzPortal