OPERATION
70
Engine Break‑in Procedure
IMPORTANT: Failure to follow the engine break‑in procedures can
result in poor performance throughout the life of the engine and
can cause engine damage. Always follow break‑in procedures.
Engine Oil
Use Mercury or Quicksilver engine oil or the other recommended
one, that is, TCW‑3.
NOTE: Do not mix different brands of oil.
the mixing of different brands, or different kinds even if the same
brand, may cause gelling, resulting in blockage of filter screens.
This may lead to serious engine damage due to the lack of
lubrication.
Mixing ratio (1:50) : Unleaded gasoline 50: Genuine engine oil or
recommended engine oil (TCW‑3) 1
ENGINE BREAK-IN FUEL MIXTURE
Use a 1:25 oil/gasoline mixture in the first tank of fuel. Use Mercury
or Quicksilver engine oil or the recommended oil (TCW‑3).
BREAK-IN
Break-in period...10 hours
Vary the throttle setting during the first hour of operation.
During the first hour of operation, avoid remaining at a constant
speed for more than two minutes and avoid sustained wide open
throttle.
Time 0 min. – 10 min. – 1 hrs. – 2 hrs. – 10 hrs. –
Method of
operation
Idling or
trolling
Throttle
open less
than 1/2 of
the
way(about
3000 rpm)
Throttle open
less than 3/4
of the way
(about 4000
rpm)
Throttle open
3/4 of the way
(about 4000
rpm)
Normal
operating
Conditions
Cruising
at no
more
than
minimum
speed
A full‑throttle
run is allowed
for 1 min.
every 10 min.
A full‑throttle
run is allowed
for 2 min.
every 10 min.
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