Logo
FULL SITE MENU

1987 evinrude 15hp starting procedure

S

Sbct

New member
Just purchased this motor. This is my first boat motor. Ran it tonight in a tank of water. Didn’t come with any manual. I turned the throttle a little to the left as looking at photo. Turned the fuel adjustment to about half way and it fired right up. Once it is running, where do you need to keep the fuel adjustment knob? I’m not sure what the idle should sound like on this turning the knob clockwise faster idle, counterclockwise slower.

I turned the throttle down all the way to where it almost shut off, which I assume is where it should be at for idle

Turning the throttle all the way to where that white dot is in the photo kills the motor which I assume it is supposed to do? Thanks!
 

Attachments

  • IMG_9983.jpeg
    IMG_9983.jpeg
    985.5 KB · Views: 83
  • IMG_9984.jpeg
    IMG_9984.jpeg
    728.4 KB · Views: 70
10-4. I’m not the foremost expert haha as a disclaimer but know my way around the engines I have. The adjustment you have in the photo appears to be the slow speed adjustment/ mixture screw. You would have to pop the cover off and verify it runs directly to the carburetor. Typically this is used to set your low idle and ideal fuel mixture throughout the different ranges as you increase rpm’s (speed of boat). And you shouldn’t have to touch it again once it’s set unless your carb has just been rebuilt or serviced. It sounds like you may have turned it already which isn’t too big a deal. I think your style has little ledges in housing that prevents you from being able to make multiple revolutions (correct me if I’m wrong) so you probably aren’t far off. But yeah you turn the handle a little after priming the bulb and pulling the choke out on cold start and crank it up. Let it idle a sec and then push the choke in.
Yes adjustment screw you said that when turned all the way to left kills he engine should do so because it’s restricting fuel. The preferred method for shutting it off is the kill switch in the end of your tiller handle
 
The white dot with the arrows is where throttle should be for SHIFTING.-----The slower the engine is running , does the least amount of wear on clutch dog and gears.
 
CreatureKid said:
10-4. I’m not the foremost expert haha as a disclaimer but know my way around the engines I have. The adjustment you have in the photo appears to be the slow speed adjustment/ mixture screw. You would have to pop the cover off and verify it runs directly to the carburetor. Typically this is used to set your low idle and ideal fuel mixture throughout the different ranges as you increase rpm’s (speed of boat). And you shouldn’t have to touch it again once it’s set unless your carb has just been rebuilt or serviced. It sounds like you may have turned it already which isn’t too big a deal. I think your style has little ledges in housing that prevents you from being able to make multiple revolutions (correct me if I’m wrong) so you probably aren’t far off. But yeah you turn the handle a little after priming the bulb and pulling the choke out on cold start and crank it up. Let it idle a sec and then push the choke in.
Yes adjustment screw you said that when turned all the way to left kills he engine should do so because it’s restricting fuel. The preferred method for shutting it off is the kill switch in the end of your tiller handle
Click to expand...
Thank you!
 
Since it started where you set the twist grip I would continue to use that line. I use that line on my 1990 model for starting. If it does not start on a particular day simply give it more gas and try again.

The carburator adjust is done as follows:

Start the motor and let it warm up. Turn down the throttle to the lowest idle it can maintain. Turn that slow speed carb adjustment knob in (clockwise for more lean) an 1/8 of a turn and let the motor respond. It might do nothing, it might increase the idle or it might cough and stall. If the latter then turn it back and that is the correct set point. If it increases idle, slow it down with the twist grip and dial that knob in another 1/8 of a turn. Eventually the motor will cough and stall. Turn the dial back out 1/4 turn and pull off that dial knob and set it back so that it points straight down to 6 O'Clock and leave it alone. You will never need to touch it again. That is its perfect setting.

As for your comment above "I turned the throttle down all the way to where it almost shut off, which I assume is where it should be at for idle". That is correct, but to ensure it does not shut off you can adjust the idle stop adjustment. At the end of your throttle control handle you will see a knob between the twist grip itself and the red shut off buttom. That knob rotates. It is an adjustment you can set so that the ability to turn the twist grip so low that the motor stalls is prevented. In other words when it is set correctly, you can quickly turn the grip to wide open throttle and see your motor power up quickly and you can just as quickly turn it down and see your motor come to a quick slow down...but without accidently stalling the motor. It is an idle stop adjustment. Play around with it and see if you find a level of low idle, that you prefer.

Good luck and enjoy your motor.
 
Last edited:
optsyeagle said:
Since it started where you set the twist grip I would continue to use that line. I use that line on my 1990 model for starting. If it does not start on a particular day simply give it more gas and try again.

The carburator adjust is done as follows:

Start the motor and let it warm up. Turn down the throttle to the lowest idle it can maintain. Turn that slow speed carb adjustment knob in (clockwise for more lean) an 1/8 of a turn and let the motor respond. It might do nothing, it might increase the idle or it might cough and stall. If the latter then turn it back and that is the correct set point. If it increases idle, slow it down with the twist grip and dial that knob in another 1/8 of a turn. Eventually the motor will cough and stall. Turn the dial back out 1/4 turn and pull off that dial knob and set it back so that it points straight down to 6 O'Clock and leave it alone. You will never need to touch it again. That is its perfect setting.

As for your comment above "I turned the throttle down all the way to where it almost shut off, which I assume is where it should be at for idle". That is correct, but to ensure it does not shut off you can adjust the idle stop adjustment. At the end of your throttle control handle you will see a knob between the twist grip itself and the red shut off buttom. That knob rotates. It is an adjustment you can set so that the ability to turn the twist grip so low that the motor stalls is prevented. In other words when it is set correctly, you can quickly turn the grip to wide open throttle and see your motor power up quickly and you can just as quickly turn it down and see your motor come to a quick slow down...but without accidently stalling the motor. It is an idle stop adjustment. Play around with it and see if you find a level of low idle, that you prefer.

Good luck and enjoy your motor.
Click to expand...
Greatly appreciate this response!!
 
Back
Top