Air Cleaner; Change Interval; Cylinder Compression - KYMCO VENOX 250 Service Manual

2
. INSPECTION/ADJUSTMENT

AIR CLEANER

AIR CLEANER REPLACEMENT
Remove the right side cover.
Remove the air cleaner case cover screws
and the cover.
Remove the air cleaner element.
Check the element and replace it with a new
one if it is excessively dirty or damaged.

CHANGE INTERVAL

More frequent replacement is required if
ridden in unusually dusty or rainy areas.
Replace the element at every 20000 km.
• If the air cleaner is installed improperly,
dust may be sucked into the cylinder
directly to reduce the engine horse-
power and affect engine service life.
• Pay attention to the installation
direction during reassembly.

CYLINDER COMPRESSION

Warm up the engine before compression
test.
Remove the spark plug and insert a
compression gauge.
Open the throttle valve fully and crank the
engine with the starter motor or kick lever
for 7～8 seconds to test the compression.
Compression: 17±2kg/cm²
If the compression is low, check for the
following:
Leaky valves
Valve clearance too small
Leaking cylinder head gasket
Worn piston/cylinder
Worn piston rings
If the compression is high, it indicates that
carbon deposits have accumulated on the
combustion chamber and the piston head.
Screws
Air Cleaner
RR
VENOX 250
FR
2-12