Breaking in a 4-stroke

[Guest]

I would also do the lower unit for the same reasons.

[mrmillelacs]

sounds about right- whats very important in that next eight hours is to make sure and vary your speed and not stay at any rpm too long -this seats the rings. I have a f80 four stroke yammy =. I switched to valvoline full synthetic after the breakin. They say not to use synthetic until after break in.

[Long Gray Line]

I just got a new 115 Yamaha 4 stroke. I was told that the Yamaha reps say to drop the boat in and run it like crazy (his exact words were "beat the sh** out of it"). He said to change the oil after the first tank of gas but DON'T use synthetic oil, EVER! Same time frame for changing the lower unit. I was told there's break-in grease in it that needs to be changed out.

[Benfishin]

Just picked up my new Lund Angler w/ a 75HP 4-stroke Yamaha. Need to break in the motor. They suggest the first hour at half throttle the second hour at 3/4 throttle and the next eight hours should be spent between trolling speed and wide open. Sound right? Any other suggestions before I drop it in the water?

[DGS]

Change your oil right after break-in (per owners manual). Any loose contaminants (such as gasket fragments) should break free during this initial run.

DGS

[Guest]

I also was told to vary speed often. Try not to hold the same rpm's for more than a 5 seconds or so for the first hour or so of operation. After that Oil and lube change and giver the gates. Good luck and congratulations on the new rig.

[Guest]

drop er in and put er to the boards.. they always say to take it easy but everyone i know took it easy for about 10 mins before they got "ITCHY" and took off!! never harmed any of theirs....

[Guest]

Benfishing:

You make a good choice for boat and motor. I just received my new boat last week (2003 Lund Angler 1700 SS w/Yamaha 115 4 stroke). This past Saturday I got done with the first 2 hours of breakin and all went very well. According to my owners manual the second hour should be run at 3/4 throttle with a wide open period of 1 minute every 10 minutes. The boat fully geared with 3 people in it got up to 45 mph...fun, fun, fun!!!

You make a good purchase. So far I am very happy with mine... Now it is time to completely rig it out with a vexilar mounted on the bow. I will be out this weekend doing a little scouting for opener...should be very enjoyable.

Have fun with the new boat. If you don't mind me asking what size trailer did you get with your boat? I got a galvanized Karavan 2100 and would like to know if I shortsided myself by not upgrading the trailer?

Take care,

SUNNYD

[Benfishin]

SunnyD,

I up-graded to a 2300lb. Shorelander with a swing tongue. So far I am really happy with the whole package. That swing tongue is really nice. I too got the 2 hour break-in period done and look forward to a few more hours on the water before hitting Mille Lacs next weekend. Congrats on the purchase and good luck!