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The 11892 by Oregon is a .325 SM rim sprocket with 7-7 tooth used with many chainsaw models.
Rim sprockets provide smoother cutting and less chain wear than spur sprockets.
Radial port design uses centrifugal force to throw off sawdust and debris.
Wear-depth indicators show when it's time to replace.
Details
• Sprocket Type: Rim
• Pitch: .325"
• Sprocket Tooth Count: 7.0
• Radial Port Included: Yes
• Rims Included: No
• Wear Indicator: Yes
• Bearing included: No
• Spline Size: SM7, Standard 7
• Fits models:
- Husqvarna: 36, 39, 40, 41, 42, 44, 45, 49, 50, 51, 55,
127, 133, 136, 133, 140, 141, 142, 154,
234, 235E, 238, 240, 240E, 242, 254, 257, 262,
340, 345, 346, 346XP, 350, 351, 353, 355, 357, 359,
444, 455, 460,
- Stihl: 017, 018, 019, 021, 023, 025, MS210, MS250, MS250C
- Echo: CS400EVL, CS440EVL, CS510, CS3600, CS3900, CS4400, CS5100, CS4000, CS4500, CS4600, CS5000, CS5500
- Jonsered: 490, 590, 410, 420, 425, 435, 2041, 2045, 2050, 2145, 2149, 2150, 2151, 2159
- Cub Cadet: CS5018, CS5220
- Dolmar: 109, 110, 111, 115i
- Homelite: 240, 245
- John Deere: 45, CS46, CS52, CS56, CS62
- Olympyk: 938, 941, 942, 945, 946, 952, 947, 952, 956, 962
- Partner: 365, 405, 400, 410, 450, 460, 490, 510
- Poulan: 255, 295, 2500, 2600, 2750, 2775, 2900, 3050, P600, 285, 305, 330, 335, 336, 2700, 2800, 3000, 3300, 3350, 3450, 3500, 3700, 325
- Sears: 41618
Tips
For best performance Oregon suggests to replace it every two chain loops.
The most neglected and least checked part of the bar chain sprocket combo.
A worn out drive sprocket will wear the bar and chain 3-5 times as fast.
Heat build up, chain de-rail, peened drive links, nose sprocket blow outs can often be attributed to this part.
It does not matter if your saw is still fairly new if the drive sprocket is worn, so take the time to check it and change it if needed.
