Topic: Breaking In New Cat Tomorrow

This topic has 4 replies, 3 voices, and was last updated 16 years, 3 months ago by bworner.

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March 12, 2010 at 12:55 am #363360

wolfrvr
Participant

Im going to the lake to break in a new Cougar tomorrow. This will be the first boat that Ive ever broken in. Ive read the owners manual (250 Pro XS) and it seems pretty straightforward. As of now, I know to run between 4000-5400 RPM for the first 5 hours varying the speed every 2 minutes during the first 2 hours and then every 10 minutes for the last 3 hours. It also says to use a neutral trim angle. Does that mean 05 on the SmartCraft guage? Will it hurt to run it trimmed all the way down? Any suggestions or tips will be appreciated!

March 12, 2010 at 1:02 am #363363

Bass Cat Boats
Keymaster

Trimming it all the way down and vary the speed and rpm below 3500 for the first hour, then drop it down in five minute bursts up to 4500 the second hour. After that your Smart Craft gauges should tell you the break in is over and you can roll after 2 hours. BCB

March 12, 2010 at 1:05 am #363365

Bass Cat Boats
Keymaster

Sweet! Thanks BCB! Is it a good idea to not over do it once break in is complete? In other words, how many hours should I wait before I use it WOT for more than just a few minutes?

March 12, 2010 at 1:10 am #363368

Bass Cat Boats
Keymaster

The manual has good directions, though after 2 hours your pretty safe. We like to put at least that much on before we shower down. The trim in the lower position puts torque on the engine and it will not be in break in without torque. And your hull is pretty free, thus it needs some torque and the SC gauges count down minutes left on break in.

March 12, 2010 at 6:41 am #363370

bworner
Participant

BCB is 110% Correct, simply go in your Merc Manual, and study the process, honestly most guys DONT do this right, as BCB stated its pretty straight forward. After your 10hr COMPLETE break in its a good idea to dump the Lower unit fluid,check the bolt tightness, and a simple rigging check over. Always use Merc Quikleen (as directed) in our fuel, some guys like Sea Foam also, Im not sure if BCB recommends a Auxillary Fuel Water separator but I seem to think the $50 may save these DFI engines. On Mercs its VERY IMPORTANT when the water is cool, to let her warm up slow, DO not give her until its fully warmed up, Sherm will tell ya what happens, POOF…… Remember to take that HUGE GRIN off of your Mug come break in day, it will be alot of fun.. Just go through that Manual and ask questions if needed. BrannonYour Signature …
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