How do I remove the head from a YS 140L engine    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> YS Engines Support >> How do I remove the head from a YS 140L engine
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
How do I remove the head from a YS 140L engine - 12/8/2012 9:31 PM   
crashlander


 

Posts: 370
Score: 105
Joined: 4/26/2002
Last Login: 5/23/2013
From: Orlando, FL, USA
Status: offline 		Hi guys:
I want to remove the head from my YS 140L engine as I do not have compression. I am suspecting one of the valves is stuck.
Thanks.

Orlando

Hide Signatures
       Post #: 1

RE: How do I remove the head from a YS 140L engine - 12/9/2012 9:00 PM   
tande


 

Posts: 925
Score: 100
Joined: 12/23/2003
Last Login: 5/22/2013
From: Millington, MI, USA
Status: offline
quote:

ORIGINAL: crashlander

Hi guys:
I want to remove the head from my YS 140L engine as I do not have compression. I am suspecting one of the valves is stuck.
Thanks.

Orlando

You will need to be more detailed in your question.....it's bolted down with five bolts....unbolt in a criss/cross pattern, you will need to remove the rocker/arm/shaft to access two of the bolts......

Hide Signatures

(in reply to crashlander)
       Post #: 2

RE: How do I remove the head from a YS 140L engine - 12/9/2012 9:30 PM   
oskartek


 

Posts: 258
Score: 130
Joined: 11/11/2009
Last Login: 5/18/2013
From: Cedar City, UT, USA
Status: offline
quote:

ORIGINAL: crashlander

Hi guys:
I want to remove the head from my YS 140L engine as I do not have compression. I am suspecting one of the valves is stuck.
Thanks.

Orlando


Before removing the head I would recommend checking the movement of the valves by removing the rocker arm cover
and see if the valves are moving freely by simply pushing them down with a fingertip when they are in the closed position.

Good luck,

Happy flyin', Oscar



_____________________________

A man that hates kids and dogs cant be all bad. But then, Ive met some dogs that I liked.

Hide Signatures

(in reply to crashlander)
       Post #: 3

RE: How do I remove the head from a YS 140L engine - 12/10/2012 12:33 AM   
crashlander


 

Posts: 370
Score: 105
Joined: 4/26/2002
Last Login: 5/23/2013
From: Orlando, FL, USA
Status: offline 		The valves appartently move freely up and down. There is a great deal of carbon build-up as far as I can tel by looking into the exhaust port. However I believe the valves or one is not sealing properly as I do ot have any compression. The problem I'm having is I do not know how to remove the intake tube from the engine.

Hide Signatures

(in reply to oskartek)
       Post #: 4

RE: How do I remove the head from a YS 140L engine - 12/10/2012 1:35 AM   
oskartek


 

Posts: 258
Score: 130
Joined: 11/11/2009
Last Login: 5/18/2013
From: Cedar City, UT, USA
Status: offline 		The intake tube is held in place with a pair of 'O' rings at each end.
You need to remove the back plate/ carb body then pull with 
a twisting motion on the intake tube straight out from the head.
Here is a exploded view of the 140-L engine.
When re assembling, I recommend using new 'O' rings as old ones 
may leak.
Also be sure the valves are adjusted correctly.  .002", two thousandths clearence.
YS engines are sensitive to leaks internally and externally.

Not trying to be condescending. 
 
http://www.centralhobbies.com/Engines/parts/YSE140LEX.htm

If you are going to clean the valves and seats be EXTREMELY
careful not to damage the seats.
Be thorough in cleanliness when working on these engines as mistakes
can be costly.
If you are not familiar with YS engines I recommend sending them to
Richard at YS service in Minden, Nevada.
 
Happy flyin', Oscar


< Message edited by oskartek -- 12/10/2012 2:24 AM >

_____________________________

A man that hates kids and dogs cant be all bad. But then, Ive met some dogs that I liked.

Hide Signatures

(in reply to crashlander)
       Post #: 5

RE: How do I remove the head from a YS 140L engine - 12/10/2012 1:47 AM   
crashlander


 

Posts: 370
Score: 105
Joined: 4/26/2002
Last Login: 5/23/2013
From: Orlando, FL, USA
Status: offline 		OK I got it. I didn't think to remove the backplate, thought I could do it without removing it.

Thanks.

Orlando

Hide Signatures

(in reply to oskartek)
       Post #: 6

RE: How do I remove the head from a YS 140L engine - 12/10/2012 12:55 PM   
tande


 

Posts: 925
Score: 100
Joined: 12/23/2003
Last Login: 5/22/2013
From: Millington, MI, USA
Status: offline
quote:

ORIGINAL: crashlander

OK I got it. I didn't think to remove the backplate, thought I could do it without removing it.

Thanks.

Orlando

You can.....the intake pipe will simply lift "Straight Up" out of the carb.....leave it installed in the head.....

Hide Signatures

(in reply to crashlander)
       Post #: 7

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> YS Engines Support >> How do I remove the head from a YS 140L engine
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.156RCU1