Don't buy an Upstart Components 24" D 176guide bar from scamazon, unless you know how to mod to be a "semi" D176. They didn't even bother with acquiring an, i have been using the tallox brand chains for the last 4 months, looked at 8ten,upstart but i went with tallox and its worked really wellpretty sharp from the box and resharpens pretty well and holds its edge for 2 tanks if your careful but softer than stihl. their lp chain cuts more aggressive than any other brand i have used making smaller , UpStart Components 530047721 Primer Bulb Replacement for Hitachi RB24EAP 23.9cc Handheld Blower - Compatible with 12318139130 300780002 188-512-1 Purge Bulb Certified Battery $3.99 UpStart Components 530047721 Primer Bulb Replacement for Ryobi 410r (21BK410G034) Tiller - Compatible with 12318139130 300780002 188-512-1 Purge Bulb Certified Battery, The Upstart chain in .325 and full size 3/8 has the dimpling on the drive links like Stihl. The Upstart .325 uses the Stihl splicing components (not the ones for the 23rspro 3690 stuff) if I recall correctly., Saw that age, its worth going over it and checking/ replacing the rubber components like intake boot, impulse, fuel hose, fuel filter, and give it a carb kit as well. Also due to the intake boot design, they can collect fuel when idling, (called fuel puddling) and cause it to stumble and finally stall out., I've got a CS-590 that I got for pretty cheap. Looking for chain recommendations. I cut a small amount for firewood during the winter and while camping. Looking at the Oregon PowerCut 72LPX070G chain right now, any better options?.