MERCARB 2 BARREL CARBURETOR
SERVICE MANUAL NUMBER 26
Choke Setting
Normal choke setting is such that scribed mark on cover is in line with long case mark on
choke housing.
a
c
b
72403
a - Scribed Mark
b - More Choke
c - Less Choke
If choke adjustment is necessary:
1.
2.
Loosen three choke cover retaining screws and adjust as shown.
Tighten three choke cover retaining screws securely.
Preliminary Idle Speed and Mixture
IMPORTANT: The following adjustments will provide a sufficient idle speed and mix-
ture for starting engine. Final adjustments must be made with engine running.
1.
Back out idle speed screw until it no longer contacts idle cam. Turn idle speed screw in
until it just contacts idle cam, then turn screw in an additional two turns.
b
a
72284
a - Idle Speed Screw
b - Idle Cam
IMPORTANT: DO NOT turn idle mixture needle tightly against seat (in the following
step), as damage to seat and/or needle may result.
Page 5B-12
90-861329--1 MARCH 1999
INDEX
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
Marine readers have rated Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26 5.0 out of 5.0 based on 6 product reviews. Thanks for sharing this material. Helps a lot after suffering with bad mechanics. spend too much money and nothing very good
great manual, makes impossible jobs possible. without a manual you can not do the job, a must have.
Great resource. Excellent information provided.
Need help to install automate choke
Need help to instal automate choke