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tony_ranger

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Reply with quote  #16 
The Kicker was factory installed. i think it is an issue with the motor. 
just need to figure out if anything can be done. 
steelhead

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Reply with quote  #17 

Has your shop tech checked the water pump impeller and cup for rubber glazing, hardening or burned melted rubber?  Also, are all the WP seals and O rings in place including for the water tube?
Any water tube damage, requires a minimum of inspection with bright light up the mid section

Will happen with high amounts of hot exhaust gases being sucking into the water intakes or aeration of the prop when OB mounted too high.

Run a clear hose substitution on the water feed hose from the block to the bottom of the VST while back trolling in your usual waters.  Check for air bubbles.

Do you fish in sandy silty waters or beach the boat on sandy beaches?  Will destroy the WP cup and bottom plate, reducing pump output.

If you have one of the NMEA2000 Evinrude electronic gauges or a MFD that supports NMEA2000 connected to your main motor, you can add a Lowrance Navico water pressure NMEA2000 sensor.  Comes with a network T to connect to your boat's network.

Need to find a place on the block to tap into the coolant system water jacket or into the water cooling tubes for VST>EMM.

 

wh500special

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Reply with quote  #18 
Seahorse, 
Having never been inside a gearcase, I had no idea they were set up this way with thrust washers handling reverse thrust compared to the bearings on the forward side.  THANKS for the caution!
Steve

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Steve

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cashcrews

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Reply with quote  #19 
I grew up backtrolling.  My dad's 1969 Evinrude 25hp Sportster had hundreds (if not thousands) of hours of backtrolling time.  Really a great method for slow presentations out of small boats without getting lines crossed up in the prop.  Seems kind of a shame that a modern (really expensive) kicker would exhibit problems doing this. 
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seahorse

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Reply with quote  #20 
Quote:
Originally Posted by cashcrews
I grew up backtrolling.  My dad's 1969 Evinrude 25hp Sportster had hundreds (if not thousands) of hours of backtrolling time.  Really a great method for slow presentations out of small boats without getting lines crossed up in the prop.  Seems kind of a shame that a modern (really expensive) kicker would exhibit problems doing this. 


The '69 25 uses a brass insert on the propshaft seal and bearing housing as a thrust face against the reverse gear. It was on many sizes and years of motors and would wear significantly over long periods of backtrolling , especially if the throttle was advanced above a dead idle.

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GEB

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Reply with quote  #21 
Hi,
Further to steelhead’s suggestion of fitting a water pressure gauge.
See the posts by mwlarson who installed one on his E-TEC 25 in this discussion
https://www.etecownersgroup.com/post/etec-30hp-water-pressure-gauge-help-5619429?highlight=fit+water+pressure+gauge&pid=1272272299

Cheers
GEB

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Stacer 389 Territory Striker
Model No.E25DTSLAFC
Serial No. 5503333
Mid North Coast
New South Wales
Australia 
The learner will not shear the rams.

tony_ranger

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Reply with quote  #22 
That is a good idea.
Mine is still under warranty. I may bring it in and have it checked again.
I do like all the info it helps me and others. 
fish_crazy

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Reply with quote  #23 
Reading this post, I can't believe a 15 or 25 etec would not be designed for backtrolling. I live in the state with 10,000 lakes and most people backtroll with those motors. Not only does backtrolling give you absolute control when fishing, but you never have to worry about lines in the prop. I have a 2011 25 etec and have logged at least 200 hours backtrolling. I don't even use my stern electric motor anymore. What were they thinking?
tony_ranger

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Posts: 13
Reply with quote  #24 

Quote:
Originally Posted by seahorse;6465210
That particular engine was shipped with the 4 blade prop that had exhaust relief around the base of the propeller. The best way to resolve it would be to have a regular 3-blade low pitch prop put on it that would not have exhaust relief around the base of the propeller

I believe Seahorse on walleye central got this correct. I had Boomerang Sports working on this also.
they came up with the same thing by testing it on the water.
I am going tomorrow night to give it a long test.
 I was hoping some one say yes Evinrude knows about this problem and has a new prop design.

rickmcd53

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Posts: 2,491
Reply with quote  #25 
As an Evinrude dealer we never stocked or sold a 15HO.
I had always heard of it refered to as a backtroller engine and thought that was it's market segment.
With the 15HO being identical to the 25/30s except for the mounting bracket why would one choose a 15HP for forward Propulsion when a 25/30 was the same weight?
tony_ranger

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Reply with quote  #26 

The prop I tried did not make the motor over heat. it just did not perform well.
This is what came on my boat when I got it. All I am looking for is is a good fix.
Am I the only one that has had this issue? Does Evinrude know this is an issue?



seahorse

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Reply with quote  #27 
Quote:
Originally Posted by tony_ranger

The prop I tried did not make the motor over heat. it just did not perform well.
This is what came on my boat when I got it. All I am looking for is is a good fix.
Am I the only one that has had this issue? Does Evinrude know this is an issue?





What prop?

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tony_ranger

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Posts: 13
Reply with quote  #28 
I went from a kicker prop 11" X 7 to a 10" X 14
it seemed to just spin. I could not even get 2.5 MPH 
The blades are a lot smaller. I just wanted to see if it would over heat. It did not
tony_ranger

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Posts: 13
Reply with quote  #29 

I think we have this figured. I tried 2 ways this past Saturday

1 – BC Propeller let me try a 3 blade 11 ¼ X 7”  prop.

Worked well good control trolled with no issues.

2 – I got a couple of O rings to fit on the lower unit in front of the prop.

They were large enough to cover the gap so the exhaust could not get out in front of the prop.

Worked well good control. I trolled for quite a while with no issues.

At this point I am going to stick to my 4 blade 11 X 7” prop with the O rings.

I hope it continues to work if not I will move to the 3 blade prop 11 X 9”

Thank you Seahorse and BlueWaterBill for you good input.

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