Break-In Procedure - TOHATSU 40 Service Manual

SECTION 2

BREAK-IN PROCEDURE

Failure to follow the Break-In Procedure and
special fuel mixture requirements for break-in
may lead to serious engine damage and
shortened engine life.
To prevent serious engine damage and ensure long engine life, new
engines, used engines with new powerhead, used engines with
newly rebuilt powerhead, and engines coming out of storage must
be run for a period of 10 hours in accordance with the break-in
procedure.
During break-in of engines with automixing
system, a 50:1 gasoline/oil mixture is required in
the fuel tank in addition to oil in the oil tank.
Replenish fuel tank with pure gasoline ONLY after
the first 10 hours of break-in are complete and
fuel tank has been completely emptied.
Periodically check the level of lubricant in the oil
tank has lowered, indicating automixing system
is working properly and oil is being consumed by
the engine.
Premix engines and engines with automixing
system disabled, require a 25:1 gasoline/oil
mixture in the fuel tank during the 10 hour break-
in period. A 50:1 ratio is required after break-in.
First 10 Minutes
• Operate the engine at fast idle speed ONLY.
• Verify a steady stream of water from the cooling water check port
and idle port on the engine, indicating the water pump is
functioning properly.
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3-/ 4-Cylinder