Home | Classifieds | History | Technical | Links | Store | About Us | Email
Topics Topics Edit Profile Profile Help/Instructions Help Member List Register  
Search Last 1|3|7 Days Search Search Tree View Tree View  

SUBJECT 13 – Schebler Model D Carbu...

Old Marine Engine » Carburetors, Mixers, Vaporizors » SUBJECT 13 – Schebler Model D Carburetor – Maintenance and Repair « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Barry Millar
Senior Member
Username: bcm

Post Number: 74
Registered: 11-2009
Posted on Wednesday, August 10, 2016 - 09:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

About 10 years ago a web site was prepared to provide technical Information for Paul, who completed a magnificent restoration of a 1913 Mullins Launch. Paul installed a 4HP St Lawrence two-cycle engine, having neither prior experience nor understanding of engines of this vintage and style, thus experienced major operational issues.

The site is no longer web published so as a service to members who are using or restoring a two-cycle marine engine, I’ve printed subjects that provide useful information. As these were written for web publishing the images are not high quality when printed and scanned and the animation is not functional. Hopefully the content is legible. Unfortunately many of the external links are no longer available.

The web site comprised 14 SUBJECTS

This post covers:
SUBJECT 13 – Schebler Model D Carburetor – Maintenance and Repair

Barry Millar

Top of pagePrevious messageNext messageBottom of page Link to this message

Robert
Senior Member
Username: robert

Post Number: 729
Registered: 07-2003
Posted on Saturday, August 13, 2016 - 04:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I believe that must be the best Schebler D info yet published; certainly the best illustrations.
Top of pagePrevious messageNext messageBottom of page Link to this message

Ernie
Senior Member
Username: ernie

Post Number: 2297
Registered: 01-2002


Posted on Sunday, August 14, 2016 - 07:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Some additional notes

Schebler Model D carbs ONLY use 1 gasket.
This is the one in the center and can be a gasket or an O Ring.

Be careful using an O Ring as some seem to fit but when installed they will bulge out into the throat of the carb. 1 and 1/4 inch carbs are the ones that do this the easiest.

The gasket that was originally in the cover over the float needle valve should not be used even though there may be the remains of one there.

This is because at this point in history the carb may be a combination of parts from other carbs. The float bowl does need to be vented. Due to a combination of parts this may no longer be the case. Leaving this gasket out will vent the float bowl.

When I rebuild a Model D if it doesn't have the float tickler that was originally intended to flood the carb for cold starting I drill a 1/16 hole in the carb top where the float tickler would have been if it isn't already drilled.

Even when making sure the float bowl is vented I still don't put a gasket on the small cover. They don't leak there unless the float level is way too high.

The float tickler also vented the float bowl.

Schebler never used a gasket between the throttle and carb body/float bowl.
From looking at dozens of Schebler throttles they are almost always warped. Just use sand paper on a sheet of glass and sand the mounting surface flat. Make sure to clean the throttle body out well after this. Especially up in the area that the throttle plate goes during wide open throttle.

Your engine will now most likely idle better as well.
Top of pagePrevious messageNext messageBottom of page Link to this message

Robert
Senior Member
Username: robert

Post Number: 848
Registered: 07-2003
Posted on Wednesday, March 22, 2017 - 11:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Is that perhaps why no gasket was used around the outside edge of the bowl originally: to provide some venting?

And of course if your carb is sitting nice and square to the engine when it sits on level ground, consider what angle the carb will be at when the engine is (hopefully!) aligned to the prop shaft?

Ernie can you comment on wear to the needle valve tip and seat and what if anything can be done about that? I suppose rebuilders had a cone tip reamer to recut the seats?
Top of pagePrevious messageNext messageBottom of page Link to this message

Ernie
Senior Member
Username: ernie

Post Number: 2375
Registered: 01-2002


Posted on Wednesday, March 22, 2017 - 05:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Robert
I use a viton needle and seat from some sort of a small OMC outboard. No sorry I don't know the part number.
How I did it is in the section on my Rose style launch.
To use the needle and seat that came with the carb well ummmm ahhhh hmmmmm
I just put it back in and they seem to work.
On show engines I have adjustable height on my fuel tank so the available fuel pressure is only enough to fill the carb.

More info from Barry here

http://www.oldmarineengine.com/discus/messages/3433/101261.html
Top of pagePrevious messageNext messageBottom of page Link to this message

Timothy Leigh
New member
Username: timoteo11

Post Number: 1
Registered: 11-2017
Posted on Monday, November 20, 2017 - 04:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

We have a 25 cu. in. Palmer YT-l marine engine that needs a 3/4" Schebler Model D carburetor. Anybody know where we can find one?

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Automatically activate URLs in message
Action:

Administration Administration Log Out Log Out   Previous Page Previous Page Next Page Next Page

Home | Classifieds | History | Technical | Links | Store | About Us | Email
&copy 2005 OldMarineEngine.com, P.O. Box 188, Forest Dale, VT 05745-0188 • Phone: 802-247-4864 • All rights reserved.
   Marine Engine Seloc Repair Manual Lookup Tool

marine gas engine repair and restoration