Okay where to start. I got this oddy dude said put the pull rope back on and its good to go. Right off the bat had problems. For one no spark "new plug and wiring fixed that". Second the belt is only about a half inch wide and about 3 inches loose. Amd that's where my problems begin. To begin I finally got it to start and run but it runs like sh** and don't have any power pulled the carb off and on my god. It has a mikuni vm26 yes a 26 not 28 not 30 not 32. Pulled it apart. The main jet is a 180 which to my research is bigger than a vm30 the pilot jet is a 20 with is bigger than the 26. I have it now to where it will idle on its own bit the fuel adjust is all the way in as is the air and its still running. I got a 210 and a 22.5 jet coming praying that fixes it acting as if its being flooded. Put the new belt on super nice fitment nice and tight now it won't start unless the tires are off the ground and the parking brake is down. When it has a load on it wether that be the parking brake pulled or idling up a hill it will die. If you get it started with the wheels on the ground it wants to take off. I am in desperate need of help!! Someone please tell me what I can do to fix these problems.

I fixed the pull rope, cleaned carb 3 times, new I take manifold gasket, new brake cable to steering wheel, has aftermarket CDI (Capacitor Discharge Ignition), high output coil and wire with new plug, rectangle fuel pump, new fuel lines and filter, new drive belt. Piston and walls look great!

First -- welcome to the site.
I don't know if you have a manual but you can get a free pdf manual here: http://oddatv.com/fl250-fl350-factory-manuals/
1) I would get on the internet and check what the stock jetting is for that carb
2) You need to do a flow test on the fuel pump -- about 4.5oz in 10sec approx -- use a stopwatch
3) You should also do a leak down test on the Engine to confirm you don't have any air leaks or you will destroy a piston
4) Check your fuel tank to confirm it's not all rusted up

My money says that carb is not clean -- even though you said it is -- jets or passages probably not clear or floats not set right or possible needle jet for fuel flow not closing. It sounds like a carb issue.

Okay well I have the new stock jets coming for it so I'm going to try that ive had a lot of experience with carbs so I feel comfortable with how clean it is that why I do believe its the jets and possibly a air leak somewhere. When I turned the air adjustment in all the way it should have killed the motor (( Internal Combustion Engine ? )) telling me either the air jet is also too big or its leaking air somewhere. How could I test the motor (( Internal Combustion Engine ? ))? Just get it running and spray everywhere with carb cleaner? Do you have any comments about how tight the belt is? It sucks I can't start it on the ground without it trying to takeoff on me.

Sorry but I do not have any experience with the FL250 so I can not give you advice on the belt.
I do not test my engines for an air leak when it is running by spraying carb cleaner around. I don't feel this is very effective. It would be if you had a huge leak but most leaks are usually small, and if the leak is on the crank seal it probably won't do you any good to test this way. Below is a pdf on how to build your own test rig and use it.
I stand by my previous statement -- carb

Seems to me you have to start these with the e-brake on -- No ??

Alright thank you ill have to give that a try along with the new jets. I do believe the jets will fix most of the problem but it is a 81 so I'm sure it have a air leak or 2 somewhere.

Well like I said if the ebrake is on the belt is so tight it stops the crank from spinning basically so it'll fire up but then quickly die out.

Give me a bit here and I will see if I can find a belt length for you using the search box.

Alright thanks. Like I said its a brand new belt so I know its gonna be on the tight side but not so tight that when I pull the parking brake it kills the motor (( Internal Combustion Engine ? ))

Been awhile since I had a 250, so I will ask the simple questions first:

Do you have the correct belt/ belt size?

Does it rev up on it's own, causing the clutch to engage?

Does the clutch open and close? Or is it stuck or rusted?


My 250 would not move until it was revved to accelerate.....

Hopefully Randman will chime in as he has a lot more knowledge on the 250

Good luck!

This is the best I could find so far: viewtopic.php?f=1&t=15819&hilit=FL250+drive+belt+length
and this one:
viewtopic.php?f=1&t=15819&hilit=FL250+drive+belt+length

I second the Randman comment

The belt is the correct size I bought it from a motorsports shop near me tag even said it fits the fl250s. Both clutches do open and close and when I had the loose belt on it, it wouldn't move unroll I gave it gas but now its moving before I give it gas. Could that be as simple as the throttle cable needs adjusted?

That all depends. Is the idle high ?? If it is it may be that carb issue. I would fix that first before I fool around with the cable.

I also found this online: http://www.ebay.com/itm/Parts-Unlimited ... 36023b2e03
It gives the belt width and length.
The way I see it the belt should be just loose enough so it don't spin the driven shiv. If it turns the driven then it will be turning your wheels -- No ??
I think you may have the wrong length belt. I don't care if the tag said it was for the FL250. Even a small change in the length would make a difference.

Well I had nothing better to do tonight so I spent some time (a lot of time actually) researching this belt thing. Please do not except this as complete truth because I am getting this crap off the internet and I have no experience with the FL250. We need someone like Randman opinion here and not mine, to be the final voice one this one. So here we go. Open a new tab for each one of these links so you can compare the specs.
1) Factory numbers: http://www.servicehonda.com/oemparts/a/ ... se-bracket
2) YOYO parts info with the stock Honda number and the cross reference to other brands: http://www.yoyopart.com/oem/12475583/ho ... 50003.html
3) Gates PL30967 specs: https://www.finditparts.com/products/64 ... es-pl30967
4) Gates 6143 specs: http://www.autopartoo.com/oem/gates/6143gates.html
5) Goodyear 71107 specs: http://www.autopartoo.com/oem/goodyear/ ... dyear.html
6) Carslile Hypermax UA405 specs -- go to page six: http://www.hiperf.com/acatalog/beltdimensions.pdf
7) According to this thread: viewtopic.php?f=1&t=15819&hilit=FL250+drive+belt+length
He was running a Carslile Ultimax Hypermax UA405

Based on the info gathered the FL250 belt is 41.5" long and 1" wide.

Like I said I am not sure so others will have to chime in but it appears the belt is only one inch wide. That seems small to me, which is why I am skeptical about the info. You have the machine in front of you so you will have to be the final judge.

How do you measure a belt: https://www.youtube.com/watch?v=2kYLYrw0gUE
NO I am not saying ur dumb. Just in case you need to make an accurate measurement of the belt you got in your hand. Seen guys at work just take a tape measure and run it around the belt or shivs. Lots of times it didn't work well. Had to make another trip (or two) back to the parts room. In the mean time half the plant is down. Why not take a few different lengths you ask ?? Because some of the belts are 8 feet long or more and weigh a lot, especially when you have to go up three or more flights of FN stairs and a ladder.

Canadian oddy that link for the belt on eBay is the exact belt i bought from the shop but when I get home I will take it off and measure it because I do agree with you guys I feel like its too tight. And yeah I'm going to put the factory jets in the carb and fix any air leaks see if that helps. The help is appreciated thanks guys

Well that belt is 1 1/4" wide.
Based on the info the belt should be 1" wide.
That will make a huge difference.

Hello Rand -- Hello Rand --

Here we go: viewtopic.php?f=1&t=6437&hilit=belt+width+FL250
Based on this thread you got the wrong belt. It is to wide.

Here is an even better one: viewtopic.php?f=1&t=2686&hilit=belt+width+FL250

Your done. You need proper belt.

Alright guys thanks I guess ill be ordering a 1"x41/1/4" correct? Any links to that belt?

Alright guys thanks I guess ill be ordering a 1"x41/1/4" correct? Any links to that belt?

Nope -- it's a 1" x 41 1/2"

Not sure where you can get that belt but I get my stuff at the local NAPA auto supply. If they don't got then they can probably order it for you.
Take the make and numbers with you. Lots of manufacturers in that list above.
GATES PL30967
GOODYEAR 71107
CARQUEST PL30967
NAPA 5301
ACDelco 6310
GATES 6143