321S15/25
GB-17
Maintenance procedure
Daily
Weekly
Monthly
Note
Overall
Inspect the whole unit for damage,
leak or spillage
√
Inspect all accessible fasteners
√
Tighten or replace
if necessary
Inspect all screws/nuts/bolts
√
Tighten or replace
if necessary. Ad-
justing screws are
not included.
Check the hoses and ! ttings
√
Clean for any debris
√
Engine
Inspect and clean the fuel tank
√
Inspect and clean the fuel ! lter
√
Inspect and clean the air cleaner
√
Check the operation of the throttle
lever and stop switch.
√
Empty the fuel tank
√
Apply grease to the plunger
√
Clean or re-adjust the spark plug gap
√
Make sure the
gap is 0.6 to 0.7m
(.025in). Replace
if necessary
Inspect the muf" er for damage.
√
Replace if neces-
sary
Clean the muf" er and the cylinder
exhaust port
√
Clean the cylinder ! ns and intake air
cooling fan
√
To check the grease cups
• Open the upper cap (16) of the grease cup and check
the grease amount. Fill it up if it is decreasing.
16
