tiny 2 cycle question - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 25 Old 08-24-2007 Thread Starter
Senior Member
 
arbarnhart's Avatar
 
Join Date: Jun 2007
Location: North Carolina
Posts: 761
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
tiny 2 cycle question

I was given an old dink motor; an air cooled 2 cycle 1.2 HP Sears that was actually made by Tanaka. Story is - "ran when I put it away, but that was a few years ago". Anyway, it doesn't work for me now. So I check the plug and see it sparking. I spray some carb cleaner down into the hole while the plug is out and when I put it back in, it cranks and dies quickly thereafter. So I am thinking the problem is fuel, not fire. I unscrew the trap and then when I turn on the gas it trickles in. I put the trap back, take the hose off going into the carb, turn gas back on and nothing comes through. So I think I need to replace both those hoses and clean the trap (including inflow and outflow). That is, unless the system depend on "suck" from the engine to move the gas. It does make a different sound depending on the gas adjustment when I try to crank. Spraying cleaner (pretty much same as starting fluid) into the choke of the carb also turns it over for a few revolutions. So, what would you do next? I think I should replace the hoses and clean the trap.
arbarnhart is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 25 Old 08-24-2007
Junior Member
 
Join Date: Jul 2007
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
carb is probably plugged up. Remove it, take it apart, clean all the jets, back together and it will run. This comes from many years of 2 stroke bike experience.
good luck
rg500 is offline  
Quote Quick Reply Share with Facebook
post #3 of 25 Old 08-24-2007
Siren 17
 
danjarch's Avatar
 
Join Date: Jun 2007
Location: Grapevine TX
Posts: 1,982
Thanks: 1
Thanked 5 Times in 5 Posts
Rep Power: 9
 
Clean every thing. carb, hoses, trap, fuel petcock

!! WARNING !! The above information is to be used by intelligent people only. If you are Stupid, could be considered a moron, or otherwise. You are instructed to disregard this information and seek the help of a licensed and bonded professional.
danjarch is offline  
Quote Quick Reply Share with Facebook
post #4 of 25 Old 08-24-2007
Senior Member
 
pirateofcapeann's Avatar
 
Join Date: Aug 2002
Location: Gloucester, Mass. USA
Posts: 373
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 13
 
Yep, the “jets” the small holes and passages in the carburetor are “varnished” and clogged. Take it off the motor and take it apart then hose it down with carb cleaner, paying special attention to the passages. Make sure you remember how it came apart so you can put it back together right. Take pictures! There should be some adjustment screws, one for the idle mix and maybe another for the high-speed mix. Gently screw these in until they lightly seat, counting the turns, somewhere around 1& will be likely and make a note of this so you can reset them in their original positions.

________________________#\__
"Who would go to sea for pleasure
would go to hell for pastime."

PoCA
pirateofcapeann is offline  
Quote Quick Reply Share with Facebook
post #5 of 25 Old 08-24-2007
Here .. Pull this
 
Join Date: Jan 2007
Posts: 2,031
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
You remembered to mix oil (2-stroke) and gas together in about a 45 or 50 to 1 ratio right ???

**********************

There is something called "Seafoam" that will help. The fuel that was in there has proably coagulated and turned to shellac. You can get Seafoam in a regular can and in a spray. Get both. Spary everywhere that might have come in contact with the gas/oil, and then use the stuff in the can to soak any tubes/hoses/springs in.

You need to leave it for at least 24 - and preferably 48 hours. After that it will run like a charm.

http://www.seafoamsales.com/
Sailormann is offline  
Quote Quick Reply Share with Facebook
post #6 of 25 Old 08-25-2007 Thread Starter
Senior Member
 
arbarnhart's Avatar
 
Join Date: Jun 2007
Location: North Carolina
Posts: 761
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
What I am using is Gumout Carb and Choke Cleaner, which is a spray. Highly volatile; it works like starter fluid. I will start with the shuttlecock and hoses. I suspect the carb will need work also, but until it gets delivered gas, it is hard to say. I pulled out a mower a month or two ago that had not been started in over 5 years; changed oil, sprayed Gumout and fired it right up. I am sure it had varnish from old gas, but between the Gumout and new gas, it cleared away.

Yes, I mixed 2 stroke oil (and yes, the kind for air cooled engines) in the gas. I have a "Miser Mixer" oil syringe so I can accurately mix small amounts.
arbarnhart is offline  
Quote Quick Reply Share with Facebook
post #7 of 25 Old 08-25-2007 Thread Starter
Senior Member
 
arbarnhart's Avatar
 
Join Date: Jun 2007
Location: North Carolina
Posts: 761
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
OK, I ended up tearing apart the carb. The bowl was nasty! anyway removed gunk all throughout. Put it back together and the bowl stays dry. There is gas coming through the new hose from the shuttlecock; I checked that.when the float arm is down, I can spray cleaner into the gas line nipple and it comes out below where it should be filling the bowl. I am pretty sure the float is staying down when I assemble it. Thoughts?
arbarnhart is offline  
Quote Quick Reply Share with Facebook
post #8 of 25 Old 08-25-2007
Siren 17
 
danjarch's Avatar
 
Join Date: Jun 2007
Location: Grapevine TX
Posts: 1,982
Thanks: 1
Thanked 5 Times in 5 Posts
Rep Power: 9
 
I'm not saying you did, but is it possible that the float arm was put in upside down. The only other thing I can think of is if there is a vacum forming in the tank. Is there a vent or something that might be closed on the tank.

!! WARNING !! The above information is to be used by intelligent people only. If you are Stupid, could be considered a moron, or otherwise. You are instructed to disregard this information and seek the help of a licensed and bonded professional.
danjarch is offline  
Quote Quick Reply Share with Facebook
post #9 of 25 Old 08-25-2007 Thread Starter
Senior Member
 
arbarnhart's Avatar
 
Join Date: Jun 2007
Location: North Carolina
Posts: 761
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
I actually never took the float arm out. I cleaned with it in place. I tried blowing through and it is open when the arm is down and closed when it is up. I keep thinking maybe I jam the float somehow closing, but that seems unlikely.
arbarnhart is offline  
Quote Quick Reply Share with Facebook
post #10 of 25 Old 08-25-2007
Siren 17
 
danjarch's Avatar
 
Join Date: Jun 2007
Location: Grapevine TX
Posts: 1,982
Thanks: 1
Thanked 5 Times in 5 Posts
Rep Power: 9
 
If its not to much trouble, you might take the bowl off again, then spray the float arm pin and the needle valve with a little wd40. I had a bike that I cleaned up the carb on, when I put it all back together, the needle valve stuck open. It hadn't been lubed and it was still sticky from the cleaner

!! WARNING !! The above information is to be used by intelligent people only. If you are Stupid, could be considered a moron, or otherwise. You are instructed to disregard this information and seek the help of a licensed and bonded professional.
danjarch is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Ladder question mcain Gear & Maintenance 14 08-03-2007 10:28 PM
racor question rperret Gear & Maintenance 8 06-19-2007 01:18 PM
O/B motors 2 stroke vs. 4 cycle catalyst27 Gear & Maintenance 22 09-11-2006 09:38 AM
Quick displacement question... kclaybrook General Discussion (sailing related) 19 07-13-2006 08:30 PM
question on sails Mark_OD23 General Discussion (sailing related) 6 11-19-2002 04:41 PM

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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