Operation; Engine Break-In Period - Volvo Penta 4.3OSi-B Operator's Manual

Engine break-in period

NOTE! To ensure proper lubrication during the
break-in period, do not remove factory break-in oil
until after the 20-hour break-in is completed. The First
Service inspection should be carried out after 20 hours
of operation.
Caution!
Failure to follow engine break-in procedures can result
in serious engine damage.
Never run an engine at a constant engine speed for
long periods during the break-in period.
Do not run engine at a constant RPM for prolonged
periods of time during the break-in period.
All Volvo Penta engines have been run for a short time during
a final test at the factory. You must follow the engine break-in
procedure during the first 20 hours of operation to ensure
maximum performance and longest engine life.
During the break-in period, watch out for the following items
during the initial engine run:
1. Check engine oil level frequently.
IMPORTANT! Be sure to check the oil level frequently
during the first 50 hours of operation, since the oil
consumption will be high until the piston rings are
properly seated.
The engine may use more engine oil during the running-
in period than would otherwise be normal. Check the oil
level regularly and more frequently during the running-in
period.
• Maintain oil level in the safe range, between the ADD
and FULL marks on dipstick. Somewhat higher oil con-
sumption is normal until the piston rings have seated.
• If you have a problem getting a good oil level reading on
the dipstick, rotate the dipstick 180° in the dipstick tube.
• When adding engine oil, use Volvo Penta engine oils for
gasoline engines, or a good quality oil (API Service CE/
SG or better) of the same viscosity that meets General
Motors Specification GM-6094-M. Use the following chart
to select the SAE viscosity that matches the tempera-
ture range in which you expect to operate.
SAE Viscosity Chart
Lowest Anticipated
Temperature
32°F (0°C) - above
0°F (-18°C) - 32°F (0°C)
Below 0°F (-18°C)
*Recommended - SAE 30 Volvo Penta DuraPlus Synthetic
Motor Oil (P/N 3851230-7 U.S. and Canada only). If the Rec-
ommended oil is not available, use pure synthetic
multiviscosity oil
NOTE! To ensure proper lubrication during the
break-in period, do not remove factory break-in oil
until after the 20-hour break-in is completed.
2. Watch the oil pressure gauge.
• Oil pressure will rise as RPM increases, and fall as RPM
decreases. In addition, cold oil will generally show higher
oil pressure for any specific RPM than hot oil. Both of
these conditions reflect normal engine operation.
• If the oil indicator fluctuates when the boat is turning,
climbing on plane, etc., the oil pickup screen may not
be covered with oil. Check the oil dipstick. If required,
add oil, but do not overfill. If the oil level is correct and
the condition persists, ask your Volvo Penta dealer to
check for possible gauge or oil pump malfunction.
3. Watch the engine temperature indicator to be sure
there is proper water circulation.
IMPORTANT! Failure to follow the break-in procedure
may void the engine warranty.
First two hours
1. For the first five to ten minutes of operation, operate
the engine at a fast idle (above 1500 RPM).
2. During the remaining first two hours of operation, ac-
celerate to bring the boat onto plane quickly; bring the
throttle back to maintain a planing attitude.
During this period, vary the engine speed frequently by
accelerating to approximately ¾ throttle for two to three
minutes, then back to minimum cruising speed.
3. After the engine has reached operating temperature,
momentarily reduce engine speed, then increase engine
speed, to assist break-in of rings and bearings. Maintain
plane to avoid excessive engine load.

Operation

Recommended SAE Oil
Viscosity
SAE 30 *
SAE 20W/50
SAE 15W/50
SAE 20W-20
SAE 10W
33