B-100 8 speeds Engine exhausted

[Pokk 4]

Hello

Happy New Year Everyone !

Can anyone tell me why my B100 engine struggled when I pushed snow (3-5 cm height)?

 

This is the second year I have used to push snow.

It happened yesterday. It started normal. After I run for 30 mn or so, I noticed that the engine struggled.

I turned it off. I turned on 5-10 mn later, and after 15-20 mn of working, it happened again. I parked my helper.

 

Last year, the WH ran all season. It rested the whole summer. 

 

Any suggestions? 

 

 

[Ed Kennell 41,796]

Clogged fuel cap vent?

[953 nut 59,759]

Gas cap vent is a good suggestion. Probably a new spark plug and cleaning your ignition points would be a good idea too.

[D_Mac 9,302]

I was going to say. Make sure cap is vented, change plug, clean carb. One or all will help.

[Moonshine*Connoisseur 471]

If it has points check the contacts condition and gap. If it's not right it will seem like it's laboring as well. 

[Moonshine*Connoisseur 471]

.020 is what the manual calls for I think, but I set mine at .018   They run better for me at that setting.

[squonk 43,729]

I kind of doubt points would operate well for a while, start to act up then after sitting work good again. I would check the fuel cap and lines. Replace the condenser and try another coil . 

[Pokk 4]

Thank everyone so much ! I will take care tomorrow, tonight it seems to have a 10 cm snow in my area.

  

[Moonshine*Connoisseur 471]

Even if that's not the issue, its still a good time to check anyways. 

[kpinnc 14,576]

One more thing- dump the carb bowl. I've had a few that pick up condensation from the plastic fuel tank on a machine that has sat for a while. A bit of water and trash in the bowl can make a Kohler run like crap. 

[Lee1977 7,189]

I had a weak fuel pump on my C-120. It's been thirty or more years it would do similar, run a while and stop, wait a while and it would fire back up, don't remember how long it ran before it shut off.

Wheel Horse was still selling fuel pump kits back then. 

 

[JoeM 8,291]

See if it will perk up a bit if you close the choke a little. Might indicate the a fuel problem

[Pokk 4]

Hello Everyone

I want to give an update on my girl.

 

I replaced the fuel cab and the spark, although I did not check/adjust the point or look at the cab.

 

However, I have noticed that if I keep the chock in a mid position, she runs fine. Yesterday, I could plow for hours.

When I I kept the choke in a low position, the engine became rough and shut off.   

Any thoughts to tell me?

[953 nut 59,759]

Fuel starvation. Fuel lines, fuel filter fuel pump carburetor. If you are running gas with ethanol that can mess up the whole fuel system. Use this link to find a gas station that sells real gas.  https://www.pure-gas.org/

[Ed Kennell 41,796]

49 minutes ago, Pokk said:

chock in a mid position, she runs fine.

Air leaking in around the carb throttle shaft or carb flange.   With the engine running, spray some WD 40 around those areas. If the engine speeds up, you have found the leak.

[Handy Don 13,977]

 

1 minute ago, Ed Kennell said:

Air leaking in around the carb throttle shaft or carb flange.   With the engine running, spray some WD 40 around those areas. If the engine speeds up, you have found the leak.

Extra air leaking in around a shaft can make diagnosing a poorly running engine hard because it isn’t always repeatable as the shafts are in different positions. The WD 40 test is a good one. Do it at several different throttle settings.

[Pokk 4]

Hello Everyone,

I will be following your advice soon. I read your "953 Nut" you mention Seafoam - Can you be more specific about the procedure?