Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Stihl 031 Extremes


 
Post new topic    
View previous topic :: View next topic  
Author Message
Tom from Buckeye Lake
Regular


Joined: 08 May 2007
Posts: 457


Report to Moderator

PostPosted: Tue Nov 13, 2012 9:31 am    Post subject: Stihl 031 Extremes Reply to specific post Reply with quote

1977 Stihl O31AV. Been a great saw all these years. OK, the problem. After 6 months of non-use, fresh fuel. It wouldn't fire unless I pulled the plug and poured a little fuel into her. Then it would start, but just a few seconds. Tried several times.

Pulled fuel hose at the carb, tilted saw a little, fuel siphoned out hose, so thought fuel filter/hose OK. Pulled carb and installed kit with new gaskets/pump diaphragm/needle.

Tried to start it, fired once, release choke, pulled my arm off and didn't fire again. Pulled plug, flooded. Dried plug same event happened again. Said the He*& with it. Sat it in the garage for a week, thought I'll try again. Pulled rope, fired on 1st pull, then flooded again.

I've had better luck with rebuilding a four barrel carb.

What now? Head to a shop?
 
Back to top
View user's profile
mjsnodgrass
Regular


Joined: 07 Sep 2007
Posts: 155


Report to Moderator

PostPosted: Tue Nov 13, 2012 9:52 am    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

just had the same thing happen. stihl shop says they no longer have the parts to fix mine. too bad. i loved that saw. good luck with yours.
 
Back to top
View user's profile
dave2
Guest






Report to Moderator

PostPosted: Tue Nov 13, 2012 10:09 am    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

did you put a new spark plug in it? What brand of plug do you use? Should be by the german book either Bosch WSR 6F or NGK BPMR7A...

before you guys give up on them because parts aren't available, I may be able to get them here for you...
 
Back to top
Bryan inIowa
Long Time User


Joined: 04 Apr 2009
Posts: 1213


Report to Moderator

PostPosted: Tue Nov 13, 2012 10:13 am    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

If it's flooding that fast ,your needle and seat may be leaking . double check it , make sure clean . Make sure you got diaphram in the right way .
 
Back to top
View user's profile
mkirsch
Tractor Guru


Joined: 08 Oct 2007
Posts: 10876


Report to Moderator

PostPosted: Tue Nov 13, 2012 10:38 am    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

The needle and seat are messed up. It can happen on any saw. Had that problem with my ProMac 700... Pull twice, and the fuel would just pour out the muffler.

Mostly cuz I didn't know what I was doing. The arm that lifts the needle needs to be at a certain height or the needle won't close.
 
Back to top
View user's profile
Butch(OH)
Tractor Expert


Joined: 19 Jun 2000
Posts: 1831


Report to Moderator

PostPosted: Tue Nov 13, 2012 1:32 pm    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

As the last two posted I think. Problem is in the needle seat/ diaphram. One problem I have fixed many times for first time carb builders is the gasket goes on LAST on the fuel pump side and FIRST on the diaphram side. If the diaphram is installed first it is too close to the lever and causes what you are experiancing. There is also an assembled hieght for the lever. Some carbs it is flush with the machined surface, some not. Rebuild info abounds on the internet just search your carb model and make
 
Back to top
View user's profile
Butch(OH)
Tractor Expert


Joined: 19 Jun 2000
Posts: 1831


Report to Moderator

PostPosted: Tue Nov 13, 2012 1:33 pm    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

Forgot. If you have to take it to a shop the guys in Utica are real good.
 
Back to top
View user's profile
LJD
Tractor Expert


Joined: 22 Sep 2011
Posts: 1905


Report to Moderator

PostPosted: Tue Nov 13, 2012 3:29 pm    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

Any chance the original problem was the impulse hose (not fuel hose) and then after pulling the carb apart - you've created an additional problem? Broken impulse hoses was a big problem in 041s. Not so much in 030s and 031s though.
 
Back to top
View user's profile
Tom from Buckeye Lake
Regular


Joined: 08 May 2007
Posts: 457


Report to Moderator

PostPosted: Wed Nov 14, 2012 4:45 am    Post subject: Re: Stihl 031 Extremes Reply to specific post Reply with quote

Thanks for the replies.

I'll pull it apart again and have a look. Might be a few days and get back with you.
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Tool Talk All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters