108 carb - Page 7

Wayne · #61 09-01-2016, 09:55 PM

Quote:

Originally Posted by twoton

Haven't been following this to close so I might have missed it Wayne but, have you checked your timing yet?

It's not running.

sir_lancealot · #62 09-01-2016, 11:14 PM

Quote:

Originally Posted by Wayne

It's not running.

You don't check timing with it running. Refer to the assembly section of the Kohler manual J-Mech linked to. Make sure all the timing marks line up. But if it was running fine in the past, I doubt you have a timing issue.

After you rebuilt the carb, did you verify the spark was present? Something electrical could have failed in the time you were messing with the carb.

Wayne · #63 09-02-2016, 12:52 AM

Quote:

Originally Posted by sir_lancealot

You don't check timing with it running. Refer to the assembly section of the Kohler manual J-Mech linked to. Make sure all the timing marks line up. But if it was running fine in the past, I doubt you have a timing issue.

After you rebuilt the carb, did you verify the spark was present? Something electrical could have failed in the time you were messing with the carb.

I did verify spark after rebuilding the carb. Twice. or Three times.

I wouldn't say it was running "fine" anytime recently, but it was running well enough to get the grass cut. Something that hasn't been done since early July. But I'll keep the timing in mind and check it when I finish whatever I'm doing next, which I'm still not sure of.

Quote:

Originally Posted by cubs-n-bxrs

Looks like it has seen better days to me. It's hard to tell from the pics but it looks like there is a few divots around the sealing area. I'm not seeing the sealing ring around the valve seat. I just rebuilt a k301 last year for a friend of mine and it looked the same way. Same symptoms as you are having. I would say a rebuild is in the near future.

You may be right. I double checked and from what I can see it seems in decent shape though. I think you might just be seeing uneven deposition of carbon along the outside of the sealing surface, but I checked the underside of the valve with a mirror and around the seat again and I don't see any significant pitting. But I don't have an expert eye.

twoton · #64 09-02-2016, 05:38 AM

Picture of setting the timing on a 301 that's on a stand, using an external power supply and a home made test light.

Quote:

Originally Posted by sir_lancealot

..., I doubt you have a timing issue.

I'm not saying that is the single issue, just wanted to know what Wayne knew about the condition of his machine. It sounds like there may be many contributing factors. If you don't know if the timing is correct, and your tractor won't start,

Sounds like it's time to just go through everything and make sure it's all good, you know, like major tune up.

Good luck. Now you know why we all have multiple tractors!

Wayne · #65 09-11-2016, 12:07 PM

We are running again, finally. Not sure what did it but I like to think cleaning up the valves and combustion chamber had something to do with it.

I set my high idle fine but I don't have a tach for setting the low idle and I'm having some issues there (and I have not checked the timing, but I just haven't had "time"). I'm not able to set it low enough where it sounds right, without it dying on me. Any tips for getting it (close enough to) right without a tach?

mickb72 · #66 09-12-2016, 10:08 AM

Quote:

Originally Posted by Wayne

We are running again, finally. Not sure what did it but I like to think cleaning up the valves and combustion chamber had something to do with it.

I set my high idle fine but I don't have a tach for setting the low idle and I'm having some issues there (and I have not checked the timing, but I just haven't had "time"). I'm not able to set it low enough where it sounds right, without it dying on me. Any tips for getting it (close enough to) right without a tach?

Yes, set the timing first then you will know what's going on with the carb adjustments. You should have set the timing while you were cleaning the valves. Mike

sir_lancealot · #67 09-12-2016, 10:21 AM

Quote:

Originally Posted by Wayne

We are running again, finally. Not sure what did it but I like to think cleaning up the valves and combustion chamber had something to do with it.

I set my high idle fine but I don't have a tach for setting the low idle and I'm having some issues there (and I have not checked the timing, but I just haven't had "time"). I'm not able to set it low enough where it sounds right, without it dying on me. Any tips for getting it (close enough to) right without a tach?

You can pick up an optical tach on Amazon for under $20. Might be a good tool to get if you're going to be doing your own maintenance.