MERCARB 2 BARREL CARBURETOR
SERVICE MANUAL NUMBER 26
2.
If new or rebuilt carburetor has been installed, turn idle mixture needle in (clockwise)
until it lightly contacts seat, then back out needle 1-1/4 turns. This will provide a sufficient
setting to allow starting engine.
3.
Start engine and run at 1500 rpm until engine reaches normal operating temperature.
WARNING
DO NOT leave the helm unattended while performing idle speed and mixture adjust-
ments, following. BE CAREFUL NOT TO ACCIDENTALLY ACCELERATE ENGINE
WHILE PERFORMING ADJUSTMENTS.
4.
With boat in open water, place remote control in forward gear, idle position.
5.
Disconnect throttle cable barrel from anchor stud. Be sure not to lose spacer on anchor
stud.
6.
7.
Adjust idle speed adjustment screw to obtain 550-600 rpm, in neutral gear.
With engine running at specified rpm, adjust idle mixture needle as follows:
a. Turn idle mixture needle in (clockwise) until the engine speed begins to drop due to
lean mixture.
b. Turn idle mixture screw out (counterclockwise) until the speed begins to drop due
to rich mixture.
c. Turn screw in to a point between these two extremes to obtain maximum engine
smoothness and rpm.
d. Readjust idle speed adjustment screw until engine idles at 650-700 rpm in forward
gear.
IMPORTANT: Refer to Section 2 “Removal and Installation” for throttle cable installa-
tion and adjustment.
Page 5B-14
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