O.S. Engines Support Ask Bill Baxter your questions about O.S. Engines.

How Many Throttle Lever Set Screws ?

Old 04-24-2005, 10:47 PM
Thread Starter
Join Date: Nov 2002
Location: West Melbourne, FL
Posts: 81
Likes: 0
Received 1 Like on 1 Post
Default How Many Throttle Lever Set Screws ?

I have just cleaned an older OS four stroke engine and partially disassembled it so I could un-gum some of the parts. The engine is a model OS FS 91S and after cleaning it, I relaized that there are two holes in the Throttle Lever ring, which is part of Thottle Lever #4BK 4C, Catalog number: OSMG9024, Part Number: 24981405. I only found one screw in one of the holes though; the other hole doesn't have a screw in it any more, or never had a screw in it. The carbourator top level part number is 45981000, and although the parts list for the carbourator is listed on OS's web site, there doesn't seem to be any explode view. So I can't tell how many set screws were originally installed.
If I should have 2 set screws in the Throttle Lever ring, then please let me know. Also, let me know if I can order a screw if I need one more to reliably hold the throttle Lever on the carbourator throttle shaft.

Thank you for your support
Mike D'Amico,
Palm Bay, Florida
Old 04-25-2005, 11:47 AM
My Feedback: (11)
Join Date: Apr 2002
Location: Monticello, IL
Posts: 19,483
Likes: 0
Received 6 Likes on 5 Posts
Default RE: How Many Throttle Lever Set Screws ?

There are two holes in the throttle lever, but only one set screw. That's so that you can use whichever hole is convenient to get to when you mount your engine and change the position of the throttle lever.

Here are the stock numbers and list prices of the parts you asked about:

OSMG8852 26381501 SET SCREW #2D/#4BK-5B $1.99

These parts can be ordered through any hobby retailer who sells O.S. Max engines and accessories.

Bill Baxter, Manager
Hobby Services/Futaba Service
3002 N. Apollo Dr. Ste. 1
Champaign, IL 61822
Service Phone: 217 398-0007
Email: hobbyservices (at)

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.