Yoikes!!!
Any idea what’s letting it walk up and down like that?
btw in my unit I have washer UNDER mount bracket at that corner. It was installed by factory.
That washer tune shaft angle. When angle is tuned right belt wont try travel edge to another when spinning it to different directions.
Looks that in this picture
you dont have that washer. At least in my unit if I remove that washer it will ruin aligment and belt start travel.
notice that if you compare it to mike’s unit at this same thread you will see that also he have washer under bracket because there is gap.
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That would explain it, Great catch. I’ve got a ticket open on this and am waiting for FSE’s advice, but I’ll see if I can’t play with some shims under that leg tomorrow when I get a chance.
Great catch!
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Hi there, because the purchase date falls outside the 60-day eligibility window, we’re sorry to share that the extended warranty providers, Xcotton and AIG, have rejected the request.
We did attempt to escalate this matter further on your behalf, but unfortunately we were not able to receive a favorable response.
Hi there, because the purchase date falls outside the 60-day eligibility window, we’re sorry to share that the extended warranty providers, Xcotton and AIG, have rejected the request.
It is good to know that Yarbo’s position is that even though there is clearly a design flaw causing snow blowers to fail globally, you strictly adhere to your warranty period.
This is an especially important warning for all resellers in the EU. In the EU, consumer protection legislation provides that liability for inherent manufacturing defects continues even after the formal warranty period has expired. Therefore, if you refuse warranty claims, importers will be required to cover the cost of the broken parts themselves.
This is extremely important information when assessing whether acting as a Yarbo reseller is a risk that many companies in the EU should not take.
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You are conflating the standard warranty with the extended warranty. Just because they have extended warranty guidlines that cannot be adjusted doesn’t mean they won’t support the standard warranty.
It is reasonable to expect manufactuters to extend their standard warranty for defects, but this is unrelated to the other extended warranty company.
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They also are not responsible for the extended warranty. It’s provided by a third party and they don’t have any control over that parties terms and conditions are other than what was agreed upon in their initial contract. That third party can change any terms they want at any time (like how long you have to purchase the warranty after initial device purchase) as long as it doesn’t violate the initial contract terms or stated policy given to the end user at time of extended warranty sale.
Bad design specs?
- mis-alignment of the pulleys
- bad pully design; who makes a pulley with sharp 90 degree edges for the belt edges to get shredded on?
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There are also several other strange design choices in the snowblower itself. Regarding the pulleys, there absolutely should be a screw adjustment for alignment. In addition, the edges of the pulleys should be slightly more rounded.
But when it comes to the motor failures, there are a couple of very major design issues.
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The snowblower itself is a two-stage design, with a transverse auger that feeds snow to a separate impeller that throws it out. Between these first and second stages there is a large gear reduction. Despite that, the impeller has the same shear pin strength and the same number of pins as the transverse auger shaft. This is fundamentally a doomed design. There is simply no scenario where an object entering the impeller could cause the shear pin to break before the motor is damaged. I removed one of those pins myself, but the correct solution would be to replace the remaining pin with a thinner one.
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The larger pulley itself is already big enough that it could easily incorporate a spring-loaded torque limiter. That would eliminate both the shear pin breakage problem and the motor damage issue. Of course it would be slightly more expensive than a simple pulley, but with the current design Yarbo will likely end up servicing these snowblowers multiple times under warranty anyway, so overall it would actually be cheaper.
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I would assume the belt will act as the main overload protection for the impeller, although someone has posted pictures of one of the paddles bending. The blower has been out a while and no one that I can tell has had any major failures of the impeller.
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Motor bearings and magnets will blow up faster than belt. I already broke one and when I build diy blower I had same issue that glue at motor magnets are much weaker than belt.
Sounds like an overspec’d belt, overheating motor(no temp monitoring), overdriven motor with no over current protections, underspec’d bearings, etc.
There is over heat protection. But thats not the point. Point is at g-forces when it suddenly stops. It hit like hammer
Right, that’s why you build in a weak point, shear pin, slip clutch, belt, etc. The belt should slip/shred rather than break the more expensive components.
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