fuel shut off valve for string trimmer

[Yardguy]

It's not necessary to run a Fuel shut off, the machine wasn't designed to have a shut off or it would have one. Stihls require at least 89 octane gas and most run 92 or 93 octane. If you run the high octane gas and the Stihl HP ultra and it's not necessary to run any other stihl treatments. The Stihl Ultra already contains fuel stabilizers as do most of the two stroke oils.

I run Shell V-Power 92 octane gas in our car and all lawn equipment. I was going to buy some Stihl Ultra so I just did a search on amazon for "Stihl ultra oil". The 3 hits that came up all say "Discontinued by Manufacturer".

I wanted to install a fuel shut off on our Stihl string trimmer since our John Deere lawn mower had ongoing carb fouling problems and installing a fuel shut off valve on it and running until the engine dies solved the problem. It starts within 3 pulls every time now.

Thanks,
Yardguy

 

[Ric]

I run Shell V-Power 92 octane gas in our car and all lawn equipment. I was going to buy some Stihl Ultra so I just did a search on amazon for "Stihl ultra oil". The 3 hits that came up all say "Discontinued by Manufacturer".

I wanted to install a fuel shut off on our Stihl string trimmer since our John Deere lawn mower had ongoing carb fouling problems and installing a fuel shut off valve on it and running until the engine dies solved the problem. It starts within 3 pulls every time now.

Thanks,
Yardguy

The Stihl HP Super was discontinued, the one in the black container not the Ultra, I just purchased the Ultra last Monday for $55 a gallon. I run the Sunoco 93 in everything. Their has been several places like Amazon that have discontinued their sales of the Stihl oil because they couldn't come up with a deal from stihl for their oil. Stihl has added a HP Ultra High performance oil, They have that online but I have yet to see the stuff at the dealership.

 

[Yardguy]

The Stihl HP Super was discontinued, the one in the black container not the Ultra, I just purchased the Ultra last Monday for $55 a gallon. I run the Sunoco 93 in everything. Their has been several places like Amazon that have discontinued their sales of the Stihl oil because they couldn't come up with a deal from stihl for their oil. Stihl has added a HP Ultra High performance oil, They have that online but I have yet to see the stuff at the dealership.

You're right. Although I did a search for "Stihl ultra oil" on amazon, taking a second look now I see that the 3 "hits" are actually the Stihl High Performance oil, not the Ultra. No Ultra oil listed on amazon. I'll look for the Stihl Ultra in local stores.

Thanks,
Yardguy

 

[exotion]

Running the machine dry can be worse than gunk in your carb. Parts that require lubrication in your carb can dry out then you have bigger problems. I would replace the carb and fuel. Leave fuel in the machine and run it every couple weeks...

 

[Ric]

Running the machine dry can be worse than gunk in your carb. Parts that require lubrication in your carb can dry out then you have bigger problems. I would replace the carb and fuel. Leave fuel in the machine and run it every couple weeks...

With all the Handheld equipment I run 2 stroke and 4 mix I've never ran a carb dry.

 

[Yardguy]

Running the machine dry can be worse than gunk in your carb. Parts that require lubrication in your carb can dry out then you have bigger problems. I would replace the carb and fuel. Leave fuel in the machine and run it every couple weeks...

Thank you for sharing your perspective,
Yardguy