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GB-13
G
B
Every Every Every
25 50 100
System/components Procedure
Before
hours hours hours
Note
use
after after after
fuel leaks, fuel spillage wipe out ✔
fuel tank, air filter, fuel filter inspect/clean ✔✔ replace, if necessary
see adjusting replace carburetor
idle adjusting screw ✔
idling speed (p. 22) if necessary
clean and readjust GAP: .025 in (0.6 ~ 0.7 mm)
spark plug ✔
plug gap replace, if necessary
cylinder fins, intake air cooling vent
clean ✔
muffler, spark arrester, cylinder exhaust port
clean ✔
throttle lever, ignition switch check operation ✔
replace if
cutting parts ✔
something’s wrong
gear case grease ✔
screws/nuts/bolts tighten/replace ✔✔not adjusting screws
debris guard make sure to attach ✔
WARNING
• Make sure that the engine has stopped and is cool
before performing any service to the machine. Con-
tact with moving cutting head or hot muffler may
result in a personal injury.
AIR FILTER
• The air filter, if clogged, will reduce the engine perfor-
mance. Check and clean the filter element in warm,
soapy water as required. Dry completely before in-
stalling. If the element is broken or shrunk, replace
with a new one.
(1) Air filter
FUEL FILTER
• When the engine runs short of fuel supply, check the
fuel cap and the fuel filter for blockage.
(1) Fuel filter
9. Maintenance
ENGINE
SHAFT