Zenoah BT250 - Manual (Page 21)

9. Maintenance
hours of use for blockage, and remove any
waste which has attached itself to the
brushcutter. Note that it is necessary to remove
the plug guard shown in Figure (MA4) in order to
be able to view the upper part of the cylinder.
• If waste gets stuck and causes blockage around
the intake air cooling vent or between the
cylinder fins, it may cause the engine to
overheat, and that in turn may cause mechanical
failure on the part of the brushcutter. (MA6)
(1) Cylinder fin
(2) Intake air cooling vent (back)
■ PROCEDURES TO BE PERFORMED AFTER
EVERY 100 HOURS OF USE
1. Remove the muffler, insert a screwdriver into the
vent, and wipe away any carbon buildup. Wipe
away any carbon buildup on the muffler exhaust
vent at the same time. (MA7)
(1) Screwdriver
(2) Muffler
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has worked its
way in between the clutch lining and drum, and if
it has wipe it away using oil-free, lead-free
gasoline.
IMPORTANT
(1)
(2)
MA7
(1)
(2)
MA6
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