Guide Bar Maintenance - Oregon Chain Saw Maintenance & Safety Manual

OREGON
6.
G
8.
N
10. With chain on the bar, hold a straightedge against the bar body
N
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
N
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.
Guide Bars
GUIDE-BAR MAINTENANCE
®
CLEARANCE
GOOD
BAR RAILS
7.
G
9.
N
CHAIN LEANS
NO CLEARANCE
WORN
BAR RAILS
1/32"( 0,8 mm )
Oil Hole
90ϒ
57.
57.
57.