633GC OPERATOR’S MANUAL
23
MAINTENANCE
After Every Use ….
1. Rinse saw, bar & chain with
water.
2. Check for loose fasteners.
Tighten as necessary.
3. Inspect, flush and grease the
chain tensioner.
4. Inspect drive sprocket for
wear. Replace sprocket if
groove cuts through the top
of the tooth.
5. Check drive sprocket bearing
for wear by spinning clutch
cup. Replace if worn out.
6. Grease drive sprocket bearing.
Inject grease into the end of
the drive shaft. Spin clutch
cup while greasing.
7. Check the starter cord for wear
or damage. Replace as
necessary.
8. Lube starter recoil spring.
Spray lightweight oil into lube
hole. Also, spray lightweight
oil into the air intake slots on
the starter housing to keep
starter pawls from sticking.
9. Inspect air filter and spit-back
screen. Clean and re-oil filter
if dirty. The filter should be a
reddish-pink color when
cleaned and oiled properly.
10. Spit-back screen should be
white with no oil build-up.
Rinse in gas or solvent to
clean.
11. Spray saw, bar and chain with
lightweight oil.
After 10 hours ….
1. Remove the starter cover and
lubricate the starter recoil spring.
Clean the fins and the starter pawls
on the flywheel with a wire brush,
then grease starter pawls.
2. Remove & clean the spark plug.
Check the electrode gap. The
correct gap is .020 inch (0.5mm).
3. Clean air filter using warm soapy
water. Rinse the filter from the
inside out. Air dry, don’t use high-
pressure air to dry the filter. Re-oil
the filter using K&N air filter oil.
4. Clean the spit-back screen (inside
the air filter) with gas or solvent.
After 40 hours ….
1. Change spark plug. Adjust
electrode gap to .020 inch (0.5mm).
2. Check fuel filter located inside the
fuel tank. Clean or replace if
clogged.
Summary of Contents for 633GC
Page 26: ...633GC OPERATOR S MANUAL 26...
