Drive Sprocket Alignment - Oregon Harvester Handbook

3/4"-Pitch Drive Sprockets
Rims
• Our 3/4"-pitch drive sprockets are available in two types:
Rims and HarvesterLok® .
• Unlike rim drive sprockets on chainsaws that float and
self-align, harvester rim drive sprockets are fixed .
• Improper drive sprocket alignment can result in a thrown loop
of saw chain . It may be necessary to use shims to ensure
proper alignment of the drive sprocket groove with the guide
bar's groove .
• Alignment can be checked using an Oregon Harvester Multi-
Purpose tool .
Mechanical Timber Harvesting Handbook

Drive Sprocket Alignment

HarvesterLok®
96