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I opened up the gear head on a HT101 pole saw to check the bearing on the sprocket shaft. There was "some" grease in the gear box and am wondering if I should clean out the old grease and regrease the gears. What type of grease should I use, and how much? Do I fill the entire cavity or just...

Pressure testing a BR600 engine. Wondering if the way I am doing it is correct. What I did was blocked off the intake (carburetor) side, blocked off the exhaust port and left the spark plug in. I connected my pump to the impulse port and pumped up to 7psi. I found leaks along the joint at the...

I am resealing the engine on this blower and want to be sure to install the piston correctly. How do I space the ring gaps relative to each other and relative to the crankshaft? Thanks for your help.

I recently acquired an HL100 that has a weed trimmer head on it. Seems to run just fine as a weed trimmer but my understanding is this model number is a long reach hedge trimmer. Is it ok and or safe to use this as a weed trimmer? If so, what about using it with the grass cutting blade?

This might be a noob question. . . but I am a Stihl tool noob. I just inherited several Stihl FS weed trimmers, FS94R, FS130, FS110R, and FS131R. They all need work but I'm sure i can get them working. Are all of these designed to safely use the brush knife or grass cutting blade? And what...