Honda EU300is Trouble Starting - Power Equipment Forum : Power Equipment Forums
User Tag List

Reply
 
LinkBack Thread Tools
post #1 of 13 (permalink) Old 09-18-2015, 04:46 AM Thread Starter
Junior Member
 
Join Date: Sep 2015
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Question Honda EU300is Trouble Starting

Ive got a Honda EU3000is that will not completely start.
The only way it will run, is on full choke, and it will only run for a short time. The fuel is fairly new, (I added some Sea Foam) I've drained the carb bowl and everything looks good (no water). Spark plug is OK.
The fuel tank is a little rusty, (last owner would store the tank empty)
But I have another with the same amount of rust and it runs like a champ.
I noticed that the green paper gasket between the air box and the carb was a little torn, and am going to replace that to see if it helps. Is there an idler adjustment on the carb somewhere? Thinking of just getting a new tank and carb for it, but trying not to put more money into it than I already have.
I'd appreciate any help on getting this thing running like it should.
Thanks.
country1 is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 09-18-2015, 08:38 AM
Member
 
Join Date: Jan 2014
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
It runs while choked, which typically indicates the carb is gunked. Main jet and/or emulsion tube is obstructed with sediment, varnish, or corrosion. Time to pull the carb and dissassemble for inspection.

On the EU3000 I've been able to remove just the bowl for inspection, with it off you'll be able to see what happened.
Waypoint is offline  
post #3 of 13 (permalink) Old 10-02-2015, 05:21 AM Thread Starter
Junior Member
 
Join Date: Sep 2015
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've changed the oil, put some synthetic in.
Pulled the carb and cleaned it, cleaned the jet and the deal under it.
Cleaned the sediment cup, and cleaned the spark arrester.
I drained the gas tank and am going to use fresh gas.
What is the black plastic screw on the side of the carb for?
Idle screw? What is it supposed to be set to? Also there is a another
Little screw with a spring on it, does it matter if it's up or down?
If this doesn't work, I don't know what will.
Thanks for helping.
country1 is offline  
Sponsored Links
Advertisement
 
post #4 of 13 (permalink) Old 10-02-2015, 08:51 PM
Member
 
Join Date: Jan 2014
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I'll take a pop at helping...

If you only cleaned the main jet, and didn't drop the emulsion tube (located above the main jet) to clean every hole, you'll want to do that before reassembling.

The black plastic screw is the throttle stop screw. I generally bring this to contact w/ the throttle arm plus 1/4 turn as a starting point.

The smaller needle with spring and cap is the Pilot Screw. The manual says 1 turn out from seated (gently!) position as the starting point. I leave the limiter cap off until it's fine tuned with the engine running at operating temp, then install the limiter cap mid-way between the limiter castings using Loctite red to hold it on.
Waypoint is offline  
post #5 of 13 (permalink) Old 10-02-2015, 09:33 PM Thread Starter
Junior Member
 
Join Date: Sep 2015
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for your help Waypoint! I appreciate it.

I cleaned the emulsion tube and jet with carb cleaner
and compressed air.
I'm going to replace the fuel and
the damaged gaskets and set the throttle stop
and pilot screws to the recommended settings.
I'll let you know how it turns out.
country1 is offline  
post #6 of 13 (permalink) Old 10-03-2015, 01:46 PM
Member
 
Join Date: Jan 2014
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
If you got all the little holes around the circumference of the emulsion tube clean, and the main jet is installed properly (some have a rubber o-ring that will tear on installation if it's not oiled a bit) you should have a good outcome.

What was the carb's condition when you disassembled it? Any visible gunk in there?
Waypoint is offline  
post #7 of 13 (permalink) Old 10-04-2015, 12:21 AM Thread Starter
Junior Member
 
Join Date: Sep 2015
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, the emulsion tube and jet were cleaned well and installed correctly.

There was a little bit of gunk inside the bowl, but mostly, it was fairly clean. I'm guessing that the problem is with the fuel, and the gasket. I learned there is also a "pilot jet" that needs cleaning underneath the throttle stop screw, so that will happen and I'm hoping for good results.

Thanks again for your help.
country1 is offline  
post #8 of 13 (permalink) Old 10-04-2015, 06:58 PM
Member
 
Join Date: Jan 2014
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
You're definitely being thorough, if you're careful to get the gasket surfaces clean and torque the mounting bolts properly you should have a good outcome. Looking forward to hearing how it goes!
Waypoint is offline  
post #9 of 13 (permalink) Old 10-17-2015, 01:55 AM Thread Starter
Junior Member
 
Join Date: Sep 2015
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Almost There

I've got everything cleaned and changed out with fresh fuel. But it's only running on choke. I'm guessing it's the air screw.

I'm guessing i need to turn it out for more air to mix with the fuel?
the throttle stop screw is set in contact plus one turn in, i believe.

Let me know your thoughts on this. Thanks.

Here's what I've done to the generator to this point.

Changed Oil (Synthetic)
Cleaned Sediment Bowl and Filter
Cleaned Carburetor (Emulsion Tube, Pilot Jet and Main Jet included)
Cleaned the Spark Arrester
Replaced the Air Filter, and Air Filter and Carburetor Gaskets
Drained all of the fuel and added fresh fuel.
country1 is offline  
post #10 of 13 (permalink) Old 10-17-2015, 08:24 PM
Member
 
Join Date: Jan 2014
Posts: 98
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
If it only runs w/ the choke set, there's too much air in the mix already. Turn the needle inward in 1/4 turn increments and re-test.

If all else fails it might be best to just get a replacement carburetor.
Waypoint is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Power Equipment Forum : Power Equipment Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome