Trouble with idle on 9.5hp evinrude

[mike__b]

I have a boat and 9.5hp on loan, and I really have never used a boat before. I got the motor to start, it hasn't been started since earlier in the year.

I really don't know where to set the rich/lean knob, but I'm hoping it isn't a problem right now and can be adjusted later. The issue is that when I let the choke off, the engine runs, slows, then dies in a rapid amount of time.

When it starts with the choke fully engaged, it runs smooth, but is running fast. When I let the choke down, it will slow down, but shakes an stops. Right now I've just been testing it in a trash can full of water. I've also just kept the engine in neutral.

Any help would be greatly appreciated.

A pic is below for reference. Note: the plastic choke handle broke where it had been glued before, so I'm gluing it back together right now...
http://img266.imageshack.us/img266/1158/img1347b.jpg

 

[jmendoza]

Re: Trouble with idle on 9.5hp evinrude

Try opening the low speed needle in 1/4 turn increments and see if it will idle.

 

[mike__b]

Re: Trouble with idle on 9.5hp evinrude

Is the low speed nozzle the "rich/lean" knob? I noticed it turns a screw that goes into the carb. So I assume it regulates fuel intake into the carb.

Sorry, I've seen an outboard motor for all of 5 minutes at this point.

 

[cajuncook1]

Re: Trouble with idle on 9.5hp evinrude

Is the low speed nozzle the "rich/lean" knob? I noticed it turns a screw that goes into the carb. So I assume it regulates fuel intake into the carb.

Sorry, I've seen an outboard motor for all of 5 minutes at this point.

Yes, that is correct. (Facing the motor) Turning low speed knob clockwise will cause a leaner condition and turning the knob counter clockwise will cause a richer flow.

Couple of things to think about.

- is that fuel old....has it been sitting around for a while? Might want to mix a fresh batch of fuel/oil (50:1) ratio. (old fuel in the tanks may accumulate water and will cause your motor to run like crap!!)

mix 8 ounces of TWC-3 oil 2cycle oil with 3 gallons of gas.

- Make sure the air vent cap is open on the tank if is plastic tank.

- Make sure the primer bulb on the fuel line is connected to the tank and not the motor (the arrow on the bulb should be pointing to the motor and that is the direction of the fuel flow)

- Squeeze the the primer bulb on the fuel line until it is somewhat firm.

- When you first start the motor, place the tiller selection around start and pull the choke or manual choke the motor(looks like the choke rod is missing). Let it run for a little while then push in the choke.

***if goes to die, then you have a lean condition with your carb, so make the carb setting richer by turning the slow idle knob counter clockwise in increments of 1/4 turn and wait about 20 to 30second for the motor to react.

Please be sure to have the lower unit in a barrel of water so it can cool the engine and not ruin your impeller.

Have a fan blowing close by to help prevent the motor from inhaling its own exhaust. The 9.5hp sits low in the barrel so it is more prone to inhaling its own exhaust and running poorly. ( Try taking the motor cover off as well)


Hope this helps you some! (you may want to consider buy a service manual)

 

[Rick.]

Re: Trouble with idle on 9.5hp evinrude

http://www.sschapterpsa.com/ramblings/OMC_9.5.htm

Hello there and welcome to the world of outboards. The link above will bring you a bit of understanding regarding your 9.5. Best of luck. Rick.

 

[mike__b]

Re: Trouble with idle on 9.5hp evinrude

Thanks for the help. Slowing turning the knob 1/4 turn at a time resolved it. I finally found a spot where it worked.

 

[cajuncook1]

Re: Trouble with idle on 9.5hp evinrude

Cool, glad you had a good outcome!!! I was going to hit the lake today but my boy is a bit under the weather. (Nothing serious, just a stomach bug. )

Cheers