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Yes, I still have the .25mm shim in place. Somewhere along the way I did a second spill test and received the same results, so I think it is correct.

Thought it may be helpful to someone to provide an update on my bx1800. Despite improving performance by adjusting the fuel, I became increasingly convinced it was still not running as well as it should. ( Remember, I bought it running this way, so I never knew it when running well). The...

I removed the fuel tank, cleaned it out, replaced all the fuel line, and repaired the severely leaking fuel sending unit seal with the factory kit. I can now fill my tank without loosing a 1/4 tank of fuel! This was no doubt introducing dirt into the fuel tank. However, it was not clogging up...

I did the valve lash adjustment and injector pump timing today. The valves all had a bit of extra play, but not way off. I reduced timing shim to one 25mm shim only. The tractor now runs exactly the same - low torque and no sign the governor is trying to compensate for rpms dropping. The engine...

I should have clarified - it struggles uphill with the mower running and deck raised - not actually doing any mowing work. Agreed a 54 would be best, but I think at a minimum it should be able to move itself around. I took a look at the governor today - all seems to be in place. The manual...

I have not yet performed the spill test. At this point, I was hoping to verify it has a reasonable shim thickness. Based on the symptoms, I am more suspicious of a malfunctioning governor, so I’m going to focus on verifying it’s operation first. FYI: the engine starts and runs well when not...

Does anyone know the standard shim size specifications for the BX1800 fuel injector pump? I could not find a spec in the Workshop Manual. Just want to know how these were set from the factory so I have a good starting point for adjusting the timing. The previous owner replaced the pump...