Does this machine has a 4 cycle engine or 2 cycle one?

[cpurvis]

4 cycle.

Your tune up probably should include a new air filter, spark plug, oil change and removal of the fan housing to clean the cylinder cooling fins and investigate that oil leak. It looks like if this has ever been done, it was a long time ago.

And sharpen and balance the blade.

 

[jkinforjob]

I wouldn't touch the carb unless it runs crappy.

I got the right information from the link you provided. It's the TVS90-43745N. THANK YOU SO MUCH!

 

[jkinforjob]

And sharpen and balance the blade.

Thank you so much for your great suggestions. I definitely will give a try. To be honest, I almost know nothing about machine. It is my first time to do such kind of thing. Hopefully everything will go smoothly. ✌

 

[slomo]

removal of the fan housing to clean the cylinder cooling fins

Say it again cpurvis.

slomo

 

[Scrubcadet10]

Say it again cpurvis.

slomo