Guide Bar Maintenance - Oregon CHAINSAW Maintenance And Safety Manual

OREGON
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10. With chain on the bar, hold a straightedge against the bar body
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and against a cutter side plate. A good groove will hold the chain
straight, leaving a small gap between the straightedge and bar body.
A worn grove will let the chain lean until straightedge is flush with bar
body. Replace bar if groove is worn.
11. On sprocket-nose bars, check for clearance around the bar's tip
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between the tops of rails and the bottoms of cutters or tie straps. Replace
nose sprockets before cutters or tie straps contact the bar rails.
58.
GUIDE BARS
GUIDE-BAR MAINTENANCE
®
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GUIDE BARS GUIDE BARS
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Oil Hole