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bbwb


Less is more...more or less

Location: NE Minnesota
Joined: Feb 23, 2004
Points: 115

Okay, Stupid Question Time
Original Message   Feb 19, 2005 11:35 am
I am contemplating installing my new adjustable carburator on my 10hp tecumseh engine....the red choke knob, how is it attached to the rod...threads? just pressed on?

Please let me know the secret of the tec engine.

bbwb

Replies: 7 - 16 of 23Next page of topicsPreviousNextNext page of topicsAllView as Outline
Richie


Bring On The White Stuff

Location: Long Island, New York
Joined: Dec 12, 2003
Points: 562

Re: Okay, Stupid Question Time
Reply #7   Feb 21, 2005 4:51 pm
Mang wrote:
That explains it richie,  thanks.

I would love to replace my carb, at 4400ft I'm losing some hp, and that dern oxy gas is crap, my blower stumbles every once in a while at any rpm and when I take it up from idle to full throttle even if i do it slow, it nearly dies, I think it's the gas.    Is there usually a place to buy non oxygenated gas(for ope) in cities that use it?



Hi Mang,

At that altitude, you may have to purchase an altitude kit that consists of a different main jet.  If I'm not mistaken, and your machine is actually set up to operate at sea level, it may require a leaner high speed jet.  Less air mean less fuel is needed.  It may make the engine run better, but at some point, and I'm not sure if 4,400 ft above sea level qualifies, but the engine will never be able to achieve its optimum power output.  I suggest you consult with a local dealer for your machine.  They'll know exactly what you need.  Hope this helps.

Richie
Richie


Bring On The White Stuff

Location: Long Island, New York
Joined: Dec 12, 2003
Points: 562

Re: Okay, Stupid Question Time
Reply #8   Feb 21, 2005 4:53 pm
jubol wrote:

  You lose about 2.77% of your HP for every 1000 feet above sea level.

You, at 4400 feet you lose about 12% of your engines actual HP.

                       

Fred,

I just saw your post.  He's running too rich a mixture if he's set up for sea level, correct??

Richie
jubol


Location: Dover, De
Joined: Oct 3, 2003
Points: 1558

Re: Okay, Stupid Question Time
Reply #9   Feb 21, 2005 4:56 pm
 Richie,

      Sure is!!!!!

That's why the adjustable carb is a great asset.

You can change your fuel settings on your carb any where you are in elevation.

                                                                Fred 

Husqvarna STE927(11.5HP) snowblower,  MTD Pro Series 18/42 Lawnmower, MTD 6.5 HP  Self Prop Lawn Mower,  Weedeater 1500 Blower, Web Gensis  2000 
Mang


Location: zone 6
Joined: Dec 14, 2004
Points: 119

Re: Okay, Stupid Question Time
Reply #10   Feb 21, 2005 5:27 pm
To rich huh, I guess that's logical, all these carbs are the same on this model no matter where you buy it probably.

Maybe that's why it stumbles?

This message was modified Feb 21, 2005 by Mang
jubol


Location: Dover, De
Joined: Oct 3, 2003
Points: 1558

Re: Okay, Stupid Question Time
Reply #11   Feb 21, 2005 5:39 pm
 Mang,

      Please read the Richie "Got me hooked" thread on Carbs!!

  Might help you!

                                    Fred 

This message was modified Feb 21, 2005 by jubol


Husqvarna STE927(11.5HP) snowblower,  MTD Pro Series 18/42 Lawnmower, MTD 6.5 HP  Self Prop Lawn Mower,  Weedeater 1500 Blower, Web Gensis  2000 
Richie


Bring On The White Stuff

Location: Long Island, New York
Joined: Dec 12, 2003
Points: 562

Re: Okay, Stupid Question Time
Reply #12   Feb 21, 2005 6:05 pm
Mang wrote:
To rich huh, I guess that's logical, all these carbs are the same on this model no matter where you buy it probably.

Maybe that's why it stumbles?



Mang,

It's just a simple main nozzle change that you need.  I don't have a nozzle size chart handy.  Unless I'm mistaken, all that has to be done is remove the bowl nut/main nozzle under the carburetor, and replace it with the appropriate high altitude version.  Funny thing is if you check your engine manual, you'll note that Tecumseh states that the sea-level carburetor configuration is good up to an altitude of 7,000 feet.   I don't know where these guys come up with this stuff.  My 50 HP twin cylinder snowmobile crapped out at about 2,000 feet above sea level requiring me to change the jetting while on a trip.  It ran very rich, spit and sputtered. Have your dealer get you configured correctly.  Let us know how it works out.

Richie
Mang


Location: zone 6
Joined: Dec 14, 2004
Points: 119

Re: Okay, Stupid Question Time
Reply #13   Feb 21, 2005 6:09 pm
I'll take it to a dealer then,  for some reason I didn't think you could change the jet in these carbs,  I'll let you know how it works out.
Richie


Bring On The White Stuff

Location: Long Island, New York
Joined: Dec 12, 2003
Points: 562

Re: Okay, Stupid Question Time
Reply #14   Feb 21, 2005 6:17 pm
Mang wrote:
I'll take it to a dealer then,  for some reason I didn't think you could change the jet in these carbs,  I'll let you know how it works out.



Mang,

Sure you can.  It's just a fixed jetting rather than the older/better adjustable type.  Once the fixed jet (EPA version) is installed, the engine should start right up and run.  No further adjustment necessary.  The adjustable carburetor that I installed requires minor adjustments once started.  The difference is that I can dial in the fuel mixture for varied conditions and get the engine to run as smooth as possible. 

Richie
jubol


Location: Dover, De
Joined: Oct 3, 2003
Points: 1558

Re: Okay, Stupid Question Time
Reply #15   Feb 21, 2005 6:39 pm
 Richie,

  The adjustable CARB should solve it all, If that is the way he wants to go !!

When you turn the screws you are either making it richer or leaner.

If he did that , that is, buy the adjustable carb, he might be better off as you are.

                                            Fred  IMHO  

This message was modified Feb 21, 2005 by jubol


Husqvarna STE927(11.5HP) snowblower,  MTD Pro Series 18/42 Lawnmower, MTD 6.5 HP  Self Prop Lawn Mower,  Weedeater 1500 Blower, Web Gensis  2000 
Mang


Location: zone 6
Joined: Dec 14, 2004
Points: 119

Re: Okay, Stupid Question Time
Reply #16   Feb 21, 2005 6:48 pm
I think I read some where on here that the oxygenated gas leans out the mixture a little,  So if I just leave it the way it  is, that might help compensate for the elevation change,  and I guess the colder it is the better it will run to,  more air
This message was modified Feb 21, 2005 by Mang
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