Why do you believe other brands don't require rejetting? Please explain ....

 

Good question, I’ve seen other brands that are clearly running lean, and could use a rejet.

Also, I’ve searched but cannot find documentation that other brands engines are CARB approved. (The strictest emission standards.) Honda has is plastered front and center on their websites engine descriptions.

The most obvious reason for rejetting is less then optimal power output. This is the most apparent from the Honda snowblowers due to extremely fast impeller speeds which requires the gearing to be quite tall, and in turn puts the engine under more load and stress than other brands that are generally using shorter gearing with slower impeller speeds.

As an example, my refurbed simplicity with a 301cc predator engine has an Impeller speed of 941rpms and I cannot get the engine to bog down no matter how hard I try. If I regear the drive pulley to deliver 1200rpms you can bet I’ll get the 301 to bog down.

Couple that with hydrostatic drive which doesn’t have set gears, and the lack of awareness of the amount of forward speed being used. Most are resistant to slowing down a bit, and hair triggered to exclaim that “Honda’s are underpowered”

The competition for the most part is using larger CC Honda clones and generally lower impeller speeds.

 

I have owned several snow blowers over the years ,as well as other machinery, and I have never ever had to rejet a Tecumseh, Briggs, Kohler, Robbins, and Subaru engines.

 

We don’t HAVE to rejet the Honda’s either...

 

I drilled out the jet on my 208cc clone and it definitely made an improvement.

 

Please explain low velocity snow?

 

A portion of snow that has slowed down significantly enough to cause a cascade of accumulation with each additional pulse ending with a backup (clog).

Basically each subsequent pulse of snow off the impeller blade is less effective until either it recovers or a clog occurs.

That’s why Impeller seal kits are so effective, the squeegee effect prevents any snow to slip past the impeller and leave at a slower speed the the snow around it.