STIHL CHAINSAW's Dirty Little Secret EXPOSED

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[slickfe]

I started using chain saws when I was 15. That was 35 years ago. My grandpa and uncle were loggers and I was taught by them. First lesson, either run it until it's empty or let it cool down before removing fuel cap. Period. Same goes for any small engine equipment.

[fordson]

As an arborist, I have never refueled a saw while aloft, always refuel on the ground. I run all Stihl saws and never have problems with 1/4 turn caps. Most pressure I have gotten from taking a cap off was barely a wisp.

[samkowalski]

I want one on my mower so I can feel like my zero turn is a NASCAR every time I fill up

[Error-]

In my years of sawing wood, just let it run empty before refueling.

[SwampValley]

9:47 "there's no way this can leak" as it leaks all over the place 😂 it's a nice idea but that was too funny.

[moartime]

A maintenance man says "if it ain't broke, don't fix it". An engineer says "if it ain't broke, there's not enough moving parts".

[mab]

Cody, the lock doesn't lock the dust cap, it locks the inner fill plunger in the closed (sealed) position just like you used the scrench to lock it in the open position for manual fueling. If you look at the bottom of the cap "lock" screw, it's a slotted screwdriver that lines up with the slot in the inner seal plunger. This is pretty common on aircraft and in other fields that need dustless and toolless locking under a cover. You don't want dirt from your tools polluting your fuel system and clogging up your filter.

[ImpactedLamb]

“If an arborist is up in a tree and gets it in his eyes it could be dangerous “ Cody. My question is what arborist fuels their saw while they are in the tree.

[hbmarcott]

Does anyone realize that the start of this problem. It was when CARB (California Air Resources Board) made it mandatory that all small engines may not vent fuel into the atmosphere. Again everyone must suffer because California says you need to.

[RMoore-ztzs]

Just my 2 cents, but the initial effort should have been directed at finding out why a tiny percentage of those saws are building up pressure in the fuel tank to begin with and a gazillion of the same saws are not.

[VB-bklh]

I've got a at least a dozen Stihl saws, never once had a 'geiser' when opening the fuel cap. I've heard some pressure releasing but common sense tells most people to open it slowly with some caution if its hot and still full of gas.
I'll pass on a $100 fix to a non issue sort of problem. What happens down the road when the seals or orings in the special fill fitting or nozzle dry up? It looks like an even bigger mess than some vapor pressure in the tank.

[justmuch]

Looks like the flat on the inside of the cap lines up with the flat blade screw inside the system? They both line up locking the cap? To lock twist to the right once both lined up.

[joshcravens]

I remember the old style screw type and they would do the same thing as the quarter turn. Remove them slowly. It solves the problem. Second I understand the need for safety when it comes to the fire service, or for anyone. Also depending on the spare fuel container you carry plastic melts around fire, the msr bottles they build pressure as well gotta remove the cap slowly sometimes, it’s splitting hairs before you had to remove the cap and pour fuel in, wasn’t an issue then. It’s a nice product them seem to have thought of just about everything but I think it’s just over complicating things. You never just remove a hot radiator cap right! Just my two cents to each there own.

[FarmersforTruth]

Easy solution put threaded caps back on the saw

[jeff]

When your gas cap has more engineering hours than your saw.

[chadvalliere]

I’ve had my MS250 since 2010. It has these 1/4 turn gas and bar oil fills. I’ve ran that saw hard and never once had this happen.

[mrbiscuit]

Is it like gas vapors or something ? I just dont understand how an empty chainsaw can spew out gas, maybe it's because I am an east coast guy.

[jdstudwell]

Most guys, myself included run their chainsaws until they run out of gas and stop running, so how is gas blowing out when it’s out of gas

[JamesLacy]

I've been cutting my own firewood since I was 14. I'm 65 now and I have never had any of this problems.

[stenmoeller]

I was very impressed with this product and wish Motion Pro and future users every success. That said, I cannot understand that someone opens a fuel cap close to a motor so recklessly that a geyser has even a chance to erupt. The pressure is not that high and so it is not difficult to open it with the least bit of care preventing any accident to happen. Also, the mere talk of topping up a chain saw while it's running is utterly reprehensible to my sense of security. I certainly do not mean to look at guys doing this down my nose; I am more concerned that nobody taught them these essentials.