Echo HCAS-235ES-LW Operator's Manual page 28

Maintenance and care
1. Outer tube
2. Gearcase clamp bolt
3. Gearcase
4. Index bolt
1. Gearcase grease fittings
Cleaning silencer
Gearcase lubrication
To perform this operation, first remove the gearcase from the out-
er tube as follows:
1. Loosen the gearcase clamp bolt.
2. Remove the index bolt from the gearcase.
Do not remove the D-shaped shim washer from the
gearcase clamp. The shim washer prevents damage
from overtightening the tube clamp bolt.
3. Slide the gearcase out of the tube. Using a grease gun,
pump urea-base grease (about 10 grams) into the grease fit-
ting on the gearcase.
4. Clean up excess grease, then reassemble the gearcase
onto the outer tube. Make sure the index bolt fits into the hole
on the outer tube. Securely tighten both bolts.
Never operate the unit with a damage or missing silenc-
er or spark arrester. Operating with a missing or dam-
aged spark arrester is a fire hazard, and could also
damage your hearing.
Carbon deposits in silencer will cause a drop in engine output
and overheating. Spark arrestor screen must be checked pe-
riodically. Clean deposits from silencer.
IMPORTANT
Do not remove the silencer cover. If necessary, Please consult
your dealer.
26
CAUTION
WARNING