Hi. This link,
http://manuals.homelite.com/documents?page=5
is to the homelite page where the manuals are, however, there are 4 different models of the handheld blower you have. Either way, if this is a really new model, there may be no way to adjust the carburetor, as due to emissions standards, there may not even be any idle screws, but if they do exist, the head ma be whats called "pacman", as it looks like a little....yeah...pacman.
SOURCE: I have a UT08580 Mighty Lite backpacker blower
The Homelite part number for this spark plug is 870174001. This number crosses to Champion spark plug RCJ6Y which can be bought at any Home Depot, Lowes, Ace Hardware, etc for about $3
SOURCE: I have a homelite model uto8550 26cc mighty
1. check fuel filter in gas tank (for clogged condition).
2. Check carb jet for dirt (squirt carb cleaner in jet and fuel inlet
Summary: your carb is not getting enough fuel to mix properly with constant air flow. Therefore, fuel supply needs to be cleaned... then you will run happy!!
-Jim
SOURCE: how to adjust a carburetor on a Mighty Lite
if you take apart the carburator youll see a screen under the plate on one side once together turn the mixture screws in all the way till you feel it seat or tighten then back out each screw 1 to 1 and 1/2 turns then start the engine the key is to get it to idle once it idles turn the mixture screw the low side it will say l or h below the screw turn it in which clockwise till it runs smooth then back out slightly till it just starts to miss then rev up the throttle and adjust the high side which is towards the filter turn the mixture screw in till it revs to the highest point which I call the sweet spot your pretty close to what you need
SOURCE: mighty lite 26b leaf blower will not go full
I took the carb off (easy- two screws), rebuilt and cleaned it, removed the black "H" & "L" needle jet screws (with no screwdriver slots) with a tiny pair of needle nose pliars, 1/8 turn at a time. They are very tight. Then I cut the slots with a fine hacksaw blade and re-installed them. BEFORE you begin, MARK where the "pointer" notch is on each screw so that you know where to reset them and count the turns coming out. Also, cutting the slot 90 degrees off of the pointer mark helps.
An option would be to hold the carb body in a vise and cut the screw slots thru the aluminum guard. Be very gentle, the screws are soft steel. If I had to do it again, that's what I'd do.
Get it running and adjust the "L" at idle until it runs smooth as rich (open) as it can. Then hold the throttle wide open and open the "H" (high speed needle jet) until it runs smooth, as rich as possible. This can be a CHORE.
Remember, richer (more fuel) is better than too lean. Too lean means less lubrication and running much hotter. 80% of the cooling in gasoline engines is from the evaporative effect of the charge coming into the engine. That's why carbs ice-up well above freezing. Ask any pilot.
SOURCE: how much oil do you use? in the mighty lite
Homelite Mighty Lite engines require the gas/oil ratio to be mixed at 50:1. That is 2.6 ounces of oil per gallon or 1.3 ounces of 2 stroke oil per half gallon of gas. I recommend using synthetic oil. It lubricates much better, allows the engine to run cooler and smokes less.
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