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Awesome , thank you

Finally an update on our prop choice. Bryan at valley prop in Ventura CA recommended a power tech four blade 15 1/4 x 14. Sea trail gave us a comfortable cruise at 3800 rpm , 23 knots and a fuel burn of 1.5 mpg. 4100 rpm , 26 knots 1.3-1.4 mpg. Max rpm is 5700 rpm in calm conditions. Almost thru...

Thank you everyone for your help. I sent an email to Ken at prop god and waiting for a reply but also have a local prop shop that I’m working with and we will be going with a 15 x 15 stainless. They are actually taking by original props that are 15 1/2 x17 and are reducing the diameter by 1/2”...

The mounting is the same and a 25” shaft. But after doing some research it seems the gear ratio is different in the lower unit and a reduction in pitch maybe the answer. Found the others switch from a 3.3 to a 4.2 had similar issues and going with a 15 pitch from a 17 worked. Ekea seems you hit...

I’m less concerned about speed and more concerned about lugging the engines. I just don’t understand how a pair of 3.3 F225’s on the same boat with same props spin at 5500 and then put on a pair of 4.2 F250’s , same boat same props and less load only spin 46-4800. Doesn’t make sense to me.

We have a 2000 marlin with twin 03 F225’s spinning a 15 1/2 x 17 power tech prop’s. WOT 55-5600 rpm’s. Corrosion I believe go best of the starboard motor. Decided to repower with new 4.2 F250’s running the same props with the same load we are getting 46-4800 rpm’s WOT. The motors an almost 45lbs...

If you want your anchor to hold, a proper amount of chain is required in order to maintain a horizontal pull on your chosen anchor. With an inadequate amount of chain and some swell you’re likely to create a more vertical pull on the anchor and possibly dislodging it. Take a glance at a...

Are the motors still available ?

Be sure to check behind the thermostat in the cooling water passage way on all Yamaha outboards especially the F-150’s and F-225’s were I have experienced severe corrosion due to dissimilar metals from the thermostat and cast aluminum water way sitting in salt water. Not a warm water thing ...

Glad you found a replacement , found mine at grainger.

10-4

If clement falls thru please let me know. Matt (310)753-2528. Thanks

We have a 2000 Grady marlin w/o a gen set , powered by a pair of F-225 Yamahas. Currently have stainless three blade props , not exactly sure of diameter but seem to be 15 or 15 1/4 x 17. Boat seems to do well , just wondering if anyone was using some thing different along with some numbers...

F-150 4st. Found the same to be true on Yamahaoutboardparts.com, a good resourse for yamaha outboard information.

F-150 4st. BobP ,thanks for the info I think you hit the nail on the head.

F-150 4st. I will try and find out the production dates and or dates when yamaha may have changed material specs for the balancer assy.gears.On a brighter note,individuals who have not had to contend with this issue are very happy with their F-150s,that is why I am going ahead with the purchase...

F-150 4st. Just updating on the F-150 situation.Yamaha has agreed to remove and replace the balancer assy. the gears within this assy. are plastic gears , which from time to time fail . The small pieses work their way into the crankcase and clog the screen on the oil pump causing oil...

F-150 4 st. just-in-time,thanks for the info.You seen like the right one to clear this up.Is this drive shaft bushing and the crank shaft counter balance gear one in the same? If so how did the pieses get into the crank case and clog the screen on the oil pump? Not trying to be a smart ass ...

F-150 4st. I am sorry, page 23 sept 10 , 08. I not trying to sling mud, just want to figure out whats going on prior to handing over a few grand for one of these motors.

F-150 4 st. some of the posts I found were on yamahaoutboardparts.com (page 22 , sept.08)I will try and attach that post when I figure out how. Jimmar who posts on this site and classic parker had problems.There are two pages of posts on yamahaoutboardparts.According to the posts when the nylon...