ruler into the engine. Do not tighten the ruler.   
Take out the engine oil ruler and inspect oil level. 
If oil level is lower or approaches the lower limit, add recommended oil to the upper limit mark.     
 
* Attention 
Check if sealing ring is damaged. 
Install the engine oil ruler. 
Engine Oil Replacement 
Warm up engine. 
Place an oil pan below the engine and drain engine oil by 
removing drain plug and oil ruler. 
Kick start engine several times to drain thoroughly the engine 
oil. 
After drainage, inspect and clean engine oil filter. 
Be sure that filter screen, spring, O ring and drain plug are 
perfect and then put them back onto the engine.   
 
* Attention 
Oil should be changed when the engine is warm. Place the 
engine on the side stand. 
Make sure all the engine oil is completely and quickly drained.   
When the drain plug is removed, engine oil filter and spring 
will be ejected.   
 
Tighten the drain plug. 
Add recommended engine oil into the crankcase. 
Install engine oil leveler. Start the engine and let it run for 
2~3minutes at idle. 
Stop the engine and check if engine oil level is at upper limit 
mark in a few minutes.   
Stand the engine vertically on the ground to check oil level. 
Make sure no oil leaks. 
Drive Chain Slackness 
Stand vertically the motorcycle on the flat ground and check 
drive chain slackness 
○
,a. 
Drive chain slackness: 10-20mm 
 
If the drive chain does not meet the specification, adjust it. 
Adjust drive chain slackness: