TOHATSU 40 Service Manual page 28

Next 50 Minutes
• DO NOT operate the engine above 1/2 throttle (approx. 3000
RPM).
• DO NOT maintain a constant throttle setting. Vary engine speed
every 15 minutes.
For boats which come onto plane easily, use full
throttle to quickly accelerate onto plane; then
immediately reduce throttle to 1/2 and maintain this
speed.
Second Hour
• Use full throttle to quickly accelerate boat onto plane; then
immediately reduce throttle to 3/4 (approx. 4000 RPM) and
maintain this speed.
• At intervals, run engine at full throttle for 1 - 10 minutes; then
return to 3/4 throttle for a cooling period.
• Vary engine speed every 15 minutes.
• Check for water discharge from cooling water check ports.
Next Eight Hours
• Run engine at full throttle for short periods of time.
• Vary engine speed every 15 minutes.
• DO NOT exceed the Full Throttle RPM Range of the engine. See
Engine Specifications in this section.
After Break-in
• Retorque cylinder head bolts to specification after engine has
been run and cylinder head has cooled to the touch.
• Automixing Applications – Empty the fuel tank and replenish with
pure gasoline. Fill the automixing tank with specified oil.
• Premix Applications – Empty the fuel tank and replenish with a
50:1 gasoline/oil mixture.
3-/ 4-Cylinder
GENERAL SERVICE INFORMATION
NOTE
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