Engine Oil - HYOSUNG RT 125 D Service Manual

● Insert the spark plug and finger tighten it to the
cylinder head and then tighten it to the specified
torque.
Spark plug
: 20 ~ 25 N· · m (2.0 ~ 2.5 kgf· · m)

ENGINE OIL

Inspect Interval
Replace Initial 1,000 km and Every 4,000 km
thereafter.
Necessary amount of engine oil
Oil change
Oil and filter change
Engine overhaul
Engine oil type
Engine oil should be changed while the engine is
warm.
Engine oil filter replacement at the above intervals,
should be together with the engine oil change.
● Keep the motorcycle upright.
● Place an oil pan below the engine, and drain the
engine oil by removing the engine oil filler plug ①
and drain plug ②.
● Reinstall the drain plug gasket and engine oil
drain plug ②.
● Tighten the drain plug ② to the specified torque,
and pour fresh engine oil through the engine oil
filler hole. Use an engine oil that meets the API
service classification of Over SL and that has a
viscosity rating of SAE 10W/40.
Engine oil drain plug
: 25 ~ 30 N·m (2.5 ~ 3.0 kgf·m)
● Install the engine oil filler plug ①.
● Start up the engine and allow it to run for a few
minutes at idling speed.
● Turn off the engine and wait about three minutes,
and then check the engine oil level through the
engine oil level lens.
If the level is below mark "F" , add engine oil to
"F"level. If the level is above mark "F" , drain
engine oil to "F"level. The motorcycle must be in
a level position for accurate measurement.
850 ㎖
950 ㎖
1,200 ㎖
SAE 10W/40
API Over SL
21
PERIODIC MAINTENANCE 2-8
①
②