25
Operating time
Item
Before
operation
After
lubrication
Daily
(10h)
25h
50h
200h
Shutdown/
rest
Whole unit
Visually inspect
Engine oil
Inspect
Replace
*
1
Tightening parts
(bolt, nut)
Inspect
Fuel tank
Inspect
Drain fuel
*
3
Throttle control
Check function
Stop switch
Check function
Idle speed
Inspect/adjust
Air cleaner
Clean
Ignition plug
Inspect
Cooling air duct
Clean/inspect
Fuel pipe
Inspect
Replace
*
2
Fuel filter
Clean/replace
Valve clearance (intake valve
and exhaust valve)
Inspect/adjust
*
2
Engine overhaul
*
2
Carburetor
Drain fuel
*
3
Chain oil feed port
Clean
Guide bar
Clean the groove
and the chain oil
feed port
Inspect
Supply grease
Gear case
Supply grease
Sprocket
Inspect
Saw chain
Replace or ask for
sharpening
*
4
*1
Perform
initial
replacement
after
20h
operation.
*2 For the 200 operating hour inspection, request authorized service center.
*3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.
*4 If required.