Mariner Mercury 105/140 JET, Service Manual

Page: 428 / 797

90-824052R3 JUNE 2002 POWERHEAD - 4A-57
Break-ln Procedure
Break-in Fuel Mixture
Use a 50:1 (2%) gasoline/oil mixture in the first tank
of fuel. Follow the table below for mixing ratios. Use
of this fuel mixture combined with oil from the oil
injection system will supply adequate lubrication
during engine break-in.
After the break-in fuel mixture is used up, it is no
longer necessary to add oil with the gasoline.
NOTE: At the end of the break-in period, visually
check to see if the oil level in the oil injection tank has
dropped. Oil usage indicates the oil injection system
is functioning correctly.
GASOLINE/OIL MIXING RATIO CHART
GAS/OIL
RATIO
1 GAL-
LON GAS
(3.8 LI-
TERS)
3 GAL-
LONS
GAS (11.5
LITERS)
6 GAL-
LONS
GAS (23
LITERS)
50:1
(2%)
3 FL. OZ.
(89 ML)
OIL
8 FL. OZ.
(237 ML)
OIL
16 FL. OZ.
(473 ML)
OIL
ENGINE BREAK-IN PROCEDURE (ALL
MODELS)
Vary the throttle setting during the first hour of
operation. Avoid remaining at a constant speed for
more than two minutes and avoid sustained wide
open throttle.