3-Year Update:
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2-year update)
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1-year update)
(I usually post an update in Fall, but did not have the opportunity last year to do so. This is the update that would normally be posted in Fall of 2017.)
Remembering I detailed a specific need for excessive power to rip & launch wet oak leaves from long grass into wooded land bordered by wild black raspberries previously in this thread...
The RedMax EBZ8500RH two-stroke backpack blower (recommended here as the most powerful backpack blower) continues to start on the first pull and run well and without issue on 93 octane fuel and Stihl HP Ultra oil mixed slightly rich (40:1 instead of 50:1). (The laws keep changing and it seems WI has ethanol in every grade of fuel except "premium," hence running 93 octane instead of 89.
Cleaning the yard this year was a breeze thanks to more moss and less grass, so I pushed the leaves back farther into the woods, hoping to grow natural grass for the deer to eat over winter. The scraper nozzle (add-on purchase) wasn't needed, just the constrictor nozzle from the EBZ7500 (add-on purchase). This time the leaves were "mostly dry" and the leaf piles were already pushed past the border and into the the woods from last year, allowing the new leaves to cleanly jet in without issue. This setup is much easier to use than having the scraper nozzle on the end.
Time was down to 1 hour for a moderate amount of leaves in the lawn, 7/8 throttle and one tank of gas. I burned another tank of gas at full throttle when pushing the leaves back further into the woods.
Given noise is not a concern and the property is large, the RedMax was a huge advantage over the Stihl BR600 Magnum.
The Stihl KombiSystem is running well, although I would not want to go smaller than the KM 130 R engine (heavy, but tons of power, and I really like the power*). No issues at all, with the attachments or engine, everything works mostly like new, but attachments are due for tear-down and inspection. The blower is still doing okay with what seems to be slightly loose bearings, but other than the fan vibrating a bit everything is working fine. The chainsaw, tiller, string trimmer, are all great, the multi-angle-head hedge trimmer seems to be heating up a bit and needs a tear-down to check on the internals. All the steel pole extensions are fine with no issues.
Thanks again for the up-front advice before buying all this, you've made my work much easier!
*Please remember I'm a big guy who wants to power through tough jobs, these tools are pretty heavy for the average person.