Use and Care Manual
12
CS-4510
 WARNING
Saw chain is sharp! Always wear gloves 
when handling assembly, otherwise serious 
personal injury may result.
GUIDE BAR AND SAW CHAIN 
INSTALLATION/REMOVAL
NOTICE
• Move the chain brake lever (Front hand guard) 
fully rearward to remove or install the clutch 
cover to chain saw.
• Align the brake connector of the clutch cover to 
the groove on the side of the brake lever (Front 
hand guard).
1. Remove spark plug lead. (See maintenance sec-
tion)
2. Remove the clutch cover nuts and remove clutch 
cover.
3. Remove bar and saw chain if necessary. See 
“Maintenance and Care” section for guide bar / 
saw chain maintenance procedures.
4. Mount guide bar on studs and slide toward 
clutch to make saw chain installation easier. 
Install chain with cutters on top of guide bar 
facing forward.
5. Unlock the chain brake, and install the clutch 
cover over the guide bar studs. Ensure chain 
tension adjuster pin fits into the guide bar 
adjuster hole, brake band is positioned around 
clutch drum. Tighten clutch cover nuts finger 
tight. 
6. Turn saw over, and check brake band for correct 
position on clutch drum. If brake band is not in 
place around drum, remove cover, make sure 
brake is unlocked, and reinstall. Tighten clutch 
cover nuts finger tight. 
 WARNING
Improper clutch cover assembly can result 
in serious injury, and will cause severe 
saw damage if unit is started. Never start 
or operate saw if brake band is not in place 
on clutch drum. Always check chain brake 
operation after replacing cover. Do not 
use saw if chain brake does not function 
properly.
PREPARATION FOR USE
Clutch cover
Brake lever
(Front hand guard)
Two nuts
Unlock chain brake
Guide bar adjuster hole
Nuts
Clutch
Guide bar studs
Clutch
Guide bar 
adjuster hole
Clutch cover
Adjuster pin
Brake connector
 WARNING
Momentary stop switch automatically 
returns to run position. Engine can start 
unintentionally. Always remove spark plug 
lead from spark plug before assembling 
or performing maintenance procedures or 
serious personal injury may result. 










