Just bought new pontoon with 2013 E-Tech 115. From the start the motor did not run right. Could only get up to 4k RPM's with no speed. Boat was pushing through water...no plane. Took boat back to dealer. Owner said he "sea trialed"" the boat up to 5800 rpm's....bad sparkplug (he replaced the fouled plug. Used boat today and would not get passed 4200 rpm's and breaking up at 3k rpms and above. Burning a lot of fuel. Called the dealer today and he "insists" its the sparkplugs and will be sending me 4 new ones. Unfortunately becausee the engine has not run right since "day one" I am taking it to another authorized Johnson/evinrude dealer......This is crazy..........................
07-06-2013 11:44 - edited 07-06-2013 11:45
Let's hope the new dealer has the technician goes for a ride with you to check out the engine and not insist that it is a spark plug problem. Spark plug fouling is a symptom of a fuel or an ignition problem.
If the engine never got over 4200 rpm, it may have too large a pitch propeller on it. What make and model pontoon boat and what size propeller do you have? Is the engine a 20" or 25" shaft length or give us the complete model number of the motor?
If the motor is lugging because of the wrong prop, the exhaust tuning valve will not activate and the motor will lack power and run poorly such as you have described.
We also need to know the COMPLETE engine model number to know if it is a 20" or 25" length engine as the 115 uses 2 different gearcases and propeller diameters due to the shaft length.
Here is the information your requested:
Model # E115DSLABA
Other # on prop: 765181
Just spoke with Evinrude tech...He recommended that I change the prop from the current 13.75x13 to 14x11. Going to give it a try.......keeping my fingers crossed.
PS....Great support from the forum and the company tech I spoke with....
Just picked up new prop and attempted to install......Coated spline with grease and replaced thrust asher, the prop on shaft engaging the splines and seeding it on the thrush bushing. Slid spacer on the shft on the shaft and engaged the prop shaft splines. Installed and tightened the prop nut.....
Question: after tightening the prop nut there is too much outside room for the cotter pin to do it job......
Why am I getting more room with this prop so I cannot secure the prop nut with the cotter pin???????
Is it a genuine Evinrude propeller or a different brand, and what is the part number ?
Many thanks for your prompt reply.
Part number 0763301 --- Aluminum Prop
Manufacture date on Box: 2010/4/7
Evinrude Johnson Gunuine Parts
Thank you again for your advise and this is getting me NUTS...................
If one of your props has the replaceable hub style and the other did not, you cannot intermix the mounting hardware. Both the thrust washer and the spacer under the nut are different between the 2 types of propellers.
If your 11" pitch prop has the replaceable hub, the hardware kit came packaged inside the propeller box. It is kit #765195 and comes with a #765393 thrust bushing and a #765394 spacer. Check the part numbers on the pieces to make sure they are the correct ones. Torque is 10-12 ft. lbs on the prop nut.