Canadian Tire did sell spark plug non foulers, I dont know if they still have them. Essentially its a spacer adapter that moves the spark plug further out from the cylinder head to make the plug run hotter. One of these would probably work for the rest of this season then maybe in the winter you could pull the engine apart and see if it could be repaired.

Paul

Lemans64 wrote:

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Clean the plug or replace it and see how long it takes to foul again. Might get the rest of summer before all the mowers go on sale.
Quit using mixed gas, LMAO.

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 My 59 el Camino made the a couple of plugs look like that every 1000 miles, had to clean them and go another 1000. It burned oil at 50:1, 50 litres of gas to a liter of oil, I called it my 2 stroke 283.

 

You can probably find another good used b&s?

 

My friend Abe has a 2008 kubota ride on, Koehler 18hp. He was having trouble keeping it running past month, we decided a new solenoid for the fuel shutoff and a carb kit would get it running again, did that, couldnt get it to start. He took it to the dealer he got it from, the guy called him and said they found the problem, it wouldnt run on diesel. I asked him if it had gas in it, he said yes, I just filled it. I never smelled anything but gas, just what was in the line. They drained it and changed filters, it ran fine. 

Canadian Poncho wrote:

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No luck so far finding a used engine but I'll keep an eye out.

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 would princes auto have something you could repower it with?

Dorman 42004 Spark Plug Non-Fouler - 14mm Gasket Seat Long Reach, Pack of 2 https://a.co/d/06IYcTl

 

Amazon

-- Edited by Prefectca on Thursday 27th of July 2023 08:41:48 PM

Can't you get the engine rebuilt? I'm guessing a new set of rings and a look at the valves might be in order.

In 1999, I had my 301 Kohler rebuilt for a cost of $1200.
Seemed like a lot at that time.
It lost the timing gear yesterday.
The young mechanic who built it then, now owns the dealership.