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What pitch prop should i use on my 1994 evinrude 28 hp motor on a 15 foot sylvan that is around 400 pounds boat only. used for cruising tubing fishing

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3 blade 9-1/4P X 11 dia Right Hand rotation
This is from:
http://www.miwheel.com/PropSelector.aspx

Posted on Jun 04, 2010

Testimonial: "thank you for your help i will order that prop for my motor"

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What is the factory prop for a 2005 Sylvan V-160 with a 2005 Johnson 70hp fourstroke


It all depends on what your using your boat for. Fishing, sport or pleasure or all of above. What kind of load you have. How many people, how much fuel or how big is your cooler. The most important thing is if your prop is running in the (W.O.T.) wide open throttle numbers for your engine. Your numbers are; 5200 - 5800 rpm's. The factory or for the most part, the dealer will put a conservative prop on. A aluminum three (3) blade -13.25 x 17 or 13 x 19 cupped. For a heavier load (lift,thrust, hole shot) you can run a 13.75 x 15 or for a light load (high speed) you could run a 12.75 x 21. More than likely a 13 x 19 cupped is what will run the best being that Sylvan is a fast planing hull. A four (4) blade propeller will give you a better hole shot and better mid - range control but is rarely to never put on at the factory. That only happens at the dealer and it's usually from profit margin on stainless steel or personal preference. The maximum horse power output on your motor will be at 5400-5600 rpm's.
******** (W.O.T.) Wide Open Throttle Numbers ********
The propeller pitch and the gear ratio of the engine sets the burn on the motor. It's got nothing to do with anything except proper consumption of fuel on the engine. Some people will say" Well I never go that fast or I only cruise at 4000" That dose not matter, it's set for...... PROPER CONSUMPTION OF FUEL ONLY. If you are not running in the W.O.T. numbers you are running rich or lean, either way you will blow up your engine.
To find your W.O.T. numbers: A new or reconditioned propeller only...no damage.
(1)Run your boat as fast as it will go, throttle all the way home. Conditions to your favor (wind to your back, water like glass, little to no chop).
(2)Trim the engine down to ninety (90) degrees off the stern, prop horizontal to the hull. The stern will lift and the bow will plow and you will lose speed.
(3)Look at the tachometer only, not the speedometer, just the tachometer. That is your (W.O.T.) wide open throttle number. Trimmed up will throw your numbers out by about three (3) hundred so as long as you are in your W.O.T. numbers pushing 5800 plus is ok as long as you don't hit your rev limiter, which is usually 6050 or a little higher.
Thanks for you question. propguy513

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Identifying this outboard motor from evinrude, AQABVA71K899


Rob, AQABVA71K899 does not seem to come up as a valid # for referencing engine. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Evinrude outboard motor


check prop bush not slipping and is it the correct pitch for your boat ? !

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I have a 1984 glstron boat wit a 70 hp motor with a 13x15 pitch prop. and have to play with the power trm to get boat to plane out. How do I know if I have the right pitch prop.?


You do not tell us the size of your boat. I sounds as if you have the motor set too high in the transom. Does the motor just rev up and not move the boat or does it lug down and not seem to have enough power? More info, better ideas.

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1 Answer

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Hi, it would probably need a 17 inch pitch and then water test it and make sure its full throttle revs are between 5200 and 5500. regards Phil.

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2 Answers

Boat does not plane


you could try a lower pitched prop.2" would up the revs by 400 revs.,which would up the revs ,but give you more low down thrust,and/or tucking the motor under more[if you have electric trim/tilt].thats a big boat and fair bit of weight for a 40hp..my 40hp merc is on a 13ft saracen,and with two of us it takes a while to get gooing.so i bought a ProPulse prop,with adjustable pitch.been god to try different pitches

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1 Answer

Have Evinrude 200 hp 2 stroke on starcraft 20ft STX 2050. What is the optimim prop for this boat. Currently rpm 4450 at 40 mph. Seems slow.


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1 Answer

Missing operators manual for Evinrude 2 hp outboard motor


Your best bet is ebay for a replacement user manual. Take a look around, you will come across one... For the meantime, gas oil ratio should be 50 parts gas to 1 part oil, i.e. 50:1. General care: Dont go full throttle for any length of time. Cruise of 3/4 throttle... Always flush engine after use in saltwater, including washing down exterior. Keep spark plugs in good order and check prop for fishing line wrapped around in near the prop hub. Otherwise, get a yearly service and have them check the water pump and replace as needed, get it tuned etc and gearbox oil changed.

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