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-   -   1450 difficult to start (https://www.onlycubcadets.net/forum/showthread.php?t=37880)

sundown 03-25-2015 01:13 PM

1450 difficult to start
 
When starting my 1450 it will fire right away but I have to throttle up and down almost constantly to keep it running. It won't idle long with the throttle way down, but when increasing throttle it wants to die. I have to slowly move the choke in a little at a time while doing this. This goes on for about 5 minutes then it will let me open the throttle all the way up and run perfectly. Choke and throttle appear to work fine. Has anyone else had this problem?

cubby102 03-25-2015 01:26 PM

A good carb cleaning and/or adjustment is in order it sounds like. Is there a gasket between the carb and block?

Terry C 03-25-2015 01:27 PM

Need a little more information. So you start it and leave the choke closed and try
To throttle up? You stated you had to push the choke in a little while advancing the throttle.
Is this a new development? What's the temp? My 129 has a Walbro carb that takes forever to warm up to where I can advance the throttle quickly. I live with this cause its a fixed jet carb.

j4c11 03-25-2015 01:27 PM

Have you cleaned up your carburetor lately? Sounds like it may help.

sundown 03-25-2015 01:34 PM

Quote:

Originally Posted by Terry C (Post 318649)
Need a little more infromation. So you start it and leave the choke closed and try
To throttle up? You stated you had to push the choke in a little while advancing the throttle.
Is this a new development? What's the temp? My 129 has a walbro carb that takes forever to warm up to where I can advance the throttle quickly. I live with this cause its a fixed jet carb.

The only way it will stay running is if I have the choke about half closed and give it some throttle otherwise it dies after a few seconds. It acted the same as when it was 90 degree weather as it does at 30 degrees now.

sundown 03-25-2015 01:37 PM

Quote:

Originally Posted by cubby102 (Post 318648)
A good carb cleaning and/or adjustment is in order it sounds like. Is there a gasket between the carb and block?

I was thinking carb issue. I have not had the carb off yet. I bought this tractor last summer and I'm just getting to working on it. I plowed snow with it a couple times and it runs great, its just quite a project to get it going

cubby102 03-25-2015 01:43 PM

I'm just curious. Can you or have you pulled the spark plug and see what the bottom of it looks like. Whitish will be running lean. A golden fawn almost coffee color is just right and black is to rich. Will tell you alot about how it's running. Sounds to me like the transistor from idle jet to high speed jet isn't quite right. If you havnt done it go ahead and give the carb a real good cleaning it wouldn't hurt since ya really don't know of the service record

sundown 03-25-2015 01:59 PM

Spark plug is black. Sounds like the carb cleaning I was planning might help. I'm not a pro with small engines so I wanted to make sure there wasn't something I wasn't thinking of. It would be easier for me if they put V8's in these things haha. Thanks for the advice guys. Time to get her running good so I can move on the the lift problem...

cubby102 03-25-2015 02:00 PM

Just think of it as a flathead ford just a few less cylinders lol. Youll get it. A kit and good cleaning blowout will get ya back in buisness

ol'George 03-25-2015 03:40 PM

Before you take the carb off/apart, try going a 1/2 turn richer on the main jet.(CCW)
The plug is black because you are choking it a lot.
You are describing a lean condition,
and if the plug is black, it prolly is not firing when you try to increase the throttle.
The plug should clean up when you get the mixture right.
Or you can try a new/different plug after you adjust the carb a bit.
if this doesn't work then clean the carb.
Always try the easy things first.
Also do check the timing via the static method, not with feeler gauge.
A feeler gets you close, but static gets you right on.


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