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Are you sure it's the chain making the noise and not one of the idler bearings or auger bearing? Hard to tell from the video, but your sprockets appear to be OK, e.g. no hooking in teeth. With the chain laying straight out, how much slack is in the overall length meaning first push end of chain to middle then pull out.
If you have more than 1/2" of overall slack chain is pretty worn and could stand replacement especially if it's the original chain. A model 37A snow thrower has some years on it.
If bearings are all OK, and chain is not worn, try some Chain & Cable lubricant versus just oil. C&C lube is heavier bodied has graphite to better cling and lubricate. Deere sells it or at your local Farm Supply store.
If you continue to cut corners, you'll end up going in circles!
It's my thumb so I'll hit it if I want to!
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Location: South West Pa.
Are you kidding? sound the same as my 8 foot blower. The 93 HP tractor makes far more noise than that. When I'm blowing snow I wear ear muffs under my carhart hood that is snapped tight. Really not a issue IMO BTW are you running the auger or the pto speed at 1000? Most say use 540 RPM Pto.
Bill
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Location: Kansas City, Kansas
Lube. The rollers on the chain have loosened due to muse. Using a chain lube---probably several times or as necessary during use of the blower is about the only thing you can do to quiet the chain noise.
Or, replace the chain.
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Location: Fort Worth
I'd like to see some sort of tensioner on that chain but they didn't spend the $ to put one on. The older video there is a little more chain slop than I'd like but not a big deal.
I'd start off by putting a good coat of chain lube on it. It's in a spray can from wally world, auto parts stores or dirt bike shops. There were a few that we really liked back when my friends son was racing pro class but I can't remember what they were.
Some chains are just noisy especially when new because the rollers are tight. Tried a o - ring chain once and that had so much friction it isn't even funny. There is allot of difference in quality of chain. Lots of cheap stuff out there.