Cold starting - Snowblower Forum : Snow Blower Forums
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post #1 of 24 Old 01-26-2020, 10:50 AM Thread Starter
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Cold starting

For some bizarre reason I was reading the sales literature on some of the Briggs and Stratton Snow Blower Engines, noticed it stated "The Briggs & Stratton engines offer a primer bulb for quick starts and a large muffler for quiet running performance. Starts even down to -29C."
Wondering if anyone else has noticed this?
In the past year I have seen 5 blown up engines, and as many store their snow blowers in unheated workshops and such, I am wondering if this is contributing to the problem. My thinking, extreme cold, thick oil not circulating quickly enough, and?
btw, all of the engines I checked had the correct level of oil.
Or am I just "over thinking"?
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post #2 of 24 Old 01-26-2020, 11:05 AM
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That is the reason that it is imperative to have the 5W30 Full Synthetic in all equipment.
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post #3 of 24 Old 01-26-2020, 11:06 AM
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The flow properties of synthetic oil in the cold is why many on here use and recommend synthetic.

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post #4 of 24 Old 01-26-2020, 11:21 AM
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I agree fully with synthetic.

Beyond that, I've come to believe it's important to let my snow blower engine warm up before I push it. I like to wait a few minutes and make sure the oil's nice and warm before increasing the throttle or engaging the augers.
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post #5 of 24 Old 01-26-2020, 02:12 PM
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Agreed I have been using full syn 5w/30 in all my 4 stroke power equipment. But my favorite for quick cold starts is a 2 stroke with electric start like my Toro/Zuki 5hp. No oil in the crankcase, no resistance to cranking, starts instantly with the electric start no matter how cold it is.

1998 Toro 3000 GTS with Suzuki 47p 2 cycle
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post #6 of 24 Old 01-26-2020, 08:39 PM
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Do you guys use the Briggs And Stratton synthetic oil on you machines or do you just use any oil brand like Valvoline, Quaker State, Mobil, etc?
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post #7 of 24 Old 01-26-2020, 09:09 PM
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Quote:
Originally Posted by Tony P. View Post
I agree fully with synthetic.

Beyond that, I've come to believe it's important to let my snow blower engine warm up before I push it. I like to wait a few minutes and make sure the oil's nice and warm before increasing the throttle or engaging the augers.
Bolding is mine. I do that with every engine, and got in the habit of it way back when, when I owned an airplane. Learning that an engine overhaul would cost well into five figures (in today's dollars) was a strong incentive to learn as much as I could about the care and feeding of engines. I do this with lawn mowers, chainsaws, cars, anything with an engine.

1. Let it warm up, and cool down, gently and not under any significant load.

2. No sudden throttle changes in either direction. (Well, if you have to it's better than crashing, but don't make a habit of it.) Those engines that don't have throttles on them really grate on me for this reason. The best you can do with those is just let it run with no load for a few minutes.

3. Keep the oil clean. Oil is cheap, engines are expensive. Do the math, it's grade school arithmetic.

4. If it has them, same with any and all filters.

5. Keep it clean. Dirt and grime can and will hide a multitude of impending problems that will manifest themselves at the most inopportune time.
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post #8 of 24 Old 01-26-2020, 09:15 PM
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I never really had a problem starting my machine, even in very cold conditions. Synthetic oil may help. My engine is a Tecumseh and it gets leftover new Mobil1 High Mileage 5W30 from my car's oil jug.

I wonder if the new trend of starting at full throttle (some machines don't even offer a throttle lever anymore) will prematurely wear out some small engines, especially in the cold.

1999 Craftsman 11.0/31 (C950-52930-0)
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post #9 of 24 Old 01-26-2020, 09:25 PM
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I worked on Diesel Generators and fire pumps for 35 years.
Gens run 1800 (60 hz for a 4 pole generator which is the most common in other than home/contractors site types)
The fire pumps were set at 2100 as the droop type governor took them down to 2000 or so at their maxim flow rating.
They were heated, oil pad heaters on those that saw cold floor temps. Standard diesel engine oil. Never had any issues with them. Pretty amazing.

That said, I let my snowblower warm up a few minutes, I use synthetic lube both for ease of turn and its flow at low temps so it splash lubricates as are all my vehicles.

The Yamaha needs choke but half choke is also 1500 or better throttle. If its real cold I go back and forth between full choke and half choke until its stable and I can drop the choke out.



I don't know why B&S needs a primer. Those have been around for a long time though. The Yamaha does not have one.


21+ years and its still going just fine.

I don't deliberately abuse any equipment but its amazing what it will take.

1998 YT624 Have Owners and Service Manual, Rubber Disc Drive (not hydrostatic)
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post #10 of 24 Old 01-26-2020, 09:35 PM
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i don't see why starting a machine full throttle would hurt it. the choke usually keeps it from revving very high. the engine will even start pretty good with or without primer if you start it full throttle full choke. warm it up with choke on and should be good. i have also been meaning to toss some motorkote in my blower in the blower just to be safe but haven't done a oil change on it yet.

arien 520 snow blower 6.5hp swap
yardworks 31AH6WKF515
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