b&s 190412 0695-01 13052211 hesitation

[jwales]

8 hp on a homelite snow blower. carb rebuilt. started n ran fine this summer. running this winter has a tendancy to die under load. starts up agian fine at full throttle. i have been able to paly/feather the throttle to keep running and observing some dark puffs of smoke out the muffler. will sit at idle or low speed with no issues. even sitting at hi throttle it runs good. only premium no ethanol run in it since carb rebuild. have not touched it yet but wondering if this is a hi speed adjustment with the carb since lo speed seems no issue? any thoughts?
thanks

[KE4AVB]

Kinda doult it being a 2013 model. Probably missed read on the date code...(Maybe).

From I can find it has a flo jet carburetor. You will to download the Briggs L-Head service manual if you don't already have it. Currently my computer is operating on minimum memory here and Adobe won't open the file. Depending on your setup it maybe using the governed idle speed system.

First you will need to get idle mixture and speed set at the specified RPMs probably 1750 for your machine then you can adjust the high speed for best mixture at full throttle. Probably this engine max RPM is 3800-4000; if it is higher then the governed max speed would need to be adjusted. Once this is done it should run better.

[Deere2me]

Its prolly leaking fuel around the main nozzle, pretty common, Heres one fix from the old forum[url]:http://www.perr.com/tip9.html[/url] http://www.perr.com/tip9.html
Heres another good carb site :http://outdoorpowerinfo.com/repairs/briggs_medium_two_piece.asp http://outdoorpowerinfo.com/repairs/bri ... _piece.asp

[bgsengine]

Kinda doult it being a 2013 model. Probably missed read on the date code...(Maybe).

Yeah I bet it is actually a 7 , not a 1

May have a burned exhaust valve or blown head gasket.
If it is the flo-jet updraft ,may also be leaking the high speed nozzle and running too rich, or ignition misfire, bad plug, or points (assuming it's a '73)

Got to get the right date code off the engine first to be of much more help there.

[madmantrapper]

If it is running OK at high rpm but not under load, could be to lean. May have misunderstood the OP.

[jwales]

Sorry. I probably did get the number mixed up. I would bet 1973. My dad bought it new and I know I was responsible for snow removal on our whole block in 1975!! I did replace the nozzle/emulsion tube during the rebiuld and had experieinced some leaking initially and Brian had given me the fix information with a small o ring type gasket and that cured the problem. The carb was/is not worped. new gaskets and I do not see any leakage from the carb. I had also cleaned out the tank at that time and new fuel line and filter. I ran it again last night (snow keeps coming). Running on low speed I could move snow as long as it did not get to full in the auger box with no cut out. On hi speed it if I am quick enough I can disengage the auger and/or feather the throttle and keep it running. I also had replaced the head gasket when I didi the carb rebiuld. Hope to have some time to night and warm up the garage and play with the hi speed jet and see if that takes care of it.
Thanks

[jwales]

So this has been sitting for a few years. Cleaning out the shed so its time to get rid of this. The model number is actually 190412 0695-01 73052211.

So the previous discussions have not changed much.
I put gas in the tank and choked it and started on the 3rd pull. It runs at full throttle all day (figure of speech, well over 15 minutes with no issues) sitting or moving. It idles all day as well.

When I try and blow snow (create a load) it begins to die. If I disengage the blower or stop moving it recovers and comes back. Put it under load again and within a minute it starts to die. I took a look at the carb this AM and see there is some fuel drips coming from the end of (I believe) emulsion tube. It comes out the back or bend of the carb body.

The old posts reference some links (that are no longer available) to fix. Any suggestions (new or old)? Is this something fixable without removing the carb?

[38racing]

I have a 5 hp Tecumseh on an ariens blower. At first I thought I had governor rod in wrong hole of throttle piece or governor spring wasn't working right for some reason. Then I realized that there was so much play in the throttle plate shaft that it was binding. I concluded that when rpm dropped the throttle jammed instead of opening up to supply enough fuel for the load. Bought new carb but haven't got around to installing it.

[KE4AVB]

Bruce's Perr website info has been gone for quite some time now.

Try the following as the idle mixture especially must be adjusted as follows:

To Adjust Carburetor, (All One and Two-Piece Flo-Jets except Cross-Over)

Initial setting. Turn main jet needle valve clockwise 1-1/2 turns. Do not tighten packing nut.
Turn idle mixture needle valve clockwise 1-1/4 turn. These settings are approximately correct.
Final adjustment will be made when engine is running.

1. Start engine and run 5 minutes to attain operating temperature.

2. Place governor speed control lever in “FAST” position.

3. Turn main jet needle valve in until engine slows (clockwise-lean mixture).

4. Then turn it out past smooth operating point (rich mixture).

5. Turn main jet needle valve to midpoint between rich and lean. After adjusting, tighten packing nut.

6. Rotate throttle counterclockwise and hold against stop.

7. Adjust idle speed adjusting screw to obtain 1750 RPM, aluminum engines; 1200 RPM, cast iron engines.

8. Holding throttle against idle stop, turn idle mixture needle clockwise (lean) and counterclockwise (rich).

9. Set at midpoint between rich and lean.

10. Recheck idle RPM. Release throttle. Reset idle speed if necessary then repeat 7 thru 9.

11. If engine will not accelerate properly, carburetor should be readjusted, usually to a slightly richer mixture

[jwales]

Thanks KE4AVB. Its running fine now. No stalling.