What is this knob used for?

[Camo]

Can anyone explain to me what the knob on the lower left in this picture does? I don't see anything in the manual about it.

Thanks!

 

[Camo]

I am guessing by the symbol, that it is an engine brake.....Possible?

 

[number two]

Could that be a compression release? I believe many older models came with them.

 

[shimp]

i cant hardly see the pic, but it may be a cig lighter

 

[brandoro]

That looks the same as the B6200 I used to have. It will be the compression relief. If it is really cold out you can pull that and crank the engine with no compression to limber it up and get some oil moving before you crank it with compression. Make sure the fuel valve is Shut Off before doing this however or you will pump way too much fuel into the engine. I only used mine a few times when it was quite cold out and the block heater was not or could not be used. It does help but, keep the fuel valve closed while cranking decompressed

 

[RobJ]

Compression releases are used to allow the engine to easily turn over. Then while the engine is cranking, you release it. On some smaller diesels and even ATV's the compression release is built on a rachet system that will automatically release after the engine has turned over a couple times. Ever try pull starting an ATV without one?

 

[Camo]

Thanks......So what would happen if some dumb*** like me pulled it while going down a hill to see what it would do.....As in, would it do damage?

 

[Dyer retired]

i cant hardly see the pic, but it may be a cig lighter

I put the picture into PhotoSuite and tried to enlarge it to see it better, but the resolution was awful the bigger it got. If that is a compression release, would that be a cabled setup (like the old motorcycles were?) If so, it seems like a person could track it? If it is a compression release, wouldn't the manual make reference to it also? I think I read in an old post that Camo spoke to the previous owner prior to buying (not sure if it was purchased from a dealer or directly from the previous owner,) but wondering if that person is still around to ask. The small picture, from what I can see, it almost looks like something that was added after production, but again, I can't make out much detail.

Camo,

Just to be safe though, I wouldn't pull it while driving it down the road.....it could be an ejection seat button, ha! Dyer, retired.

 

[Willl]

Follow the cable and see whats connected to the other end.

 

[BotaBigot]

Thanks......So what would happen if some dumb*** like me pulled it while going down a hill to see what it would do.....As in, would it do damage?

Decomp works by holding the exhaust valves open (at least it did on my B6000), thereby relieving compression. It is intended to aid very cold starting by allowing the engine to overcome cold oil drag. I once used it on my B6000 to shut down a runaway engine (rolled tractor, oil bath air cleaner, aircleaner oil in intake = runaway). But in general, it can't be good to hold exhaust valves off their seat on a running engine. Seat contact is how valves are cooled...you could burn a valve.

 

[texbaylea]

I previously owned a B6100E with a compression release. I used it when the battery was low and would not crank fast enough to start the engine. I could frequently get it started by cranking with compression released then closing it.

Vernon

 

[Camo]

Thanks guys!!!!!

 

[GCLnIndiana]

I was rooting for shimp's answer that it might be a cigarette lighter.

 

[Camo]

I do see that it is more likely a compression release than a cigarette lighter... Thanks for the info guys. You make tractors so much easier for a newbie.