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  #41  
Old 12-14-2021, 07:43 PM
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Originally Posted by Disisme View Post
Ok took notes for flow.

Is the spark plug in this machine a Champion, no name on it and says F6RTC and LG .

Also for the fuel shutoff is it a 1/4” I’ll be asking for?

Thanks
Lynn
Google search with the spark plug number you provided.

Weichai torch technology co.,ltd
Weichai torch technology co.,ltd is the largest spark plug manufacturer in China with longest history. Torch brand spark plugs have 21 lines and more than 200 models which are widely applied for automotives, motorcycles, small gasoline engines.
https://m.en.weichai.com
Weichai Torch Technology Co., Ltd.

Cross Reference:. https://www.sparkplug-crossreference...rt/torch/F6RTC
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  #42  
Old 12-15-2021, 01:48 AM
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Originally Posted by Disisme View Post
Ok took notes for flow.

Is the spark plug in this machine a Champion, no name on it and says F6RTC and LG .

Also for the fuel shutoff is it a 1/4” I’ll be asking for?

Thanks
Lynn
1/4" should work. the line is likely a MM metric, but the 1/4" is going to be close.

For the spark plug, a Champion RN10Y, or NGK BPR6ES. You want a hot spark plug for a colder engine to prevent fouling.
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Old 12-15-2021, 01:56 AM
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Just remember liquid will seek it's own level and it will flow "up hill" it the input is above the output.
But I agree it is best to have a downward slope from tank to carb, but if it it not possible it will still flow liquid.
The higher the tank in relation to the carb the better the flow, ---within reason.
I wasn't going to go all 'science' on this, because - well, it's just a mower forum.

The issue with low sections of the fuel system are fuel vaporization. The vapor pressure of modern fuels is - junk. The vapor pressure of hot fuel is worse. the vapor pressure of hot, Ethanol fuel is abysmal. Now, we're not talking about drawing a lot of fuel, over a long distance, at a great height, but with the fuel just above a running engine, and the fuel line passing right next to the exhaust, best to avoid the fuel vaporization issue completely.

Now, if we want to use 100 Octane avgas, with a very high Reid vapor pressure, we could wrap the fuel line around the axles, and it would never have a problem. Ethanol blended fuel - well, no guarantees.
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