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Old 04 June 2013, 05:52   #1
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Suzuki DF140 Run in Procedure

Hi does anyone know the break in procedure for a DF140 Suzuki 4 stroke ?

our diving club is getting one and as per usuall they are wanting to go straight out with the loaded up the the rafters with kit and divers. Putting the shiney new outboard under alot of load.
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Old 04 June 2013, 06:18   #2
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Surely the owners manual will make it very clear..... You do have an owners manual, don't you?
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Old 04 June 2013, 08:29   #3
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The manual gives the spec, but iirc you mustn't use full throttle for the first hour then no more for a few minutes at a time for the next 10 hours.
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Old 04 June 2013, 09:19   #4
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DF140 10-Hour Break-In [from Suzuki Service Manual]

Avoid maintaining a constant engine speed for an extended period at any time during the engine break-in by varying the throttle position occasionally.

1. FIRST 2 HOURS

For first 15 minutes, operate the engine in-gear at idling speed. During the remaining 1 hour and 45 minutes operate the engine in-gear at less than half throttle [3000RPM].

Note: The throttle may be briefly opened beyond the recommended setting to plane the boat, but must be reduced to the recommended setting after planing.

2. NEXT 1 HOUR

Operate the engine in-gear at less than three-quarter throttle [4000 RPM].

3. LAST 7 HOURS

Operate the engine in-gear at desired engine speed. However, do not operate at full throttle for more than 5 minutes.
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Old 04 June 2013, 17:09   #5
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Hi Guys. thanks for the replies.
Its a Dive club boat and we are getting a new engine. BUT the boat officer want to just use it for diving almost as soon as we get it. In the past I have always ran engines in nice and gently as per the manuals. But as we have not collected and had the engine installed I dont as yet have the manual.

I dont want the guys blasting round in it and scrweing it up or reducing the life of the engine.

I am guessing this needs to be done OFF LOAD ie not loaded up with dive gear and divers.
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