Maintenance (continued)
Daily maintenance
Prior to each work day, perform the following:
■■Remove all dirt and debris from the engine, check the cooling fins and air cleaner for clogging, and clean as necessary.
■■Carefully remove any accumulations of dirt or debris from the muffler and fuel tank. Check cooling air intake area at base of crankcase. Remove all debris. Dirt
■■Lubricate the blades before use and after refueling. Check the cutters for damage or incorrect adjustment.
WARNING!
Always wear gloves when working around the cutter assembly.
■■Clean any debris or dirt from the cutting attachment.
■■Check for loose or missing screws or components. Make sure the cut- ter attachment is securely fastened.
■■Check the entire unit for leaking fuel or grease.
■■Make sure nuts, bolts, and screws (except carburetor idle speed adjust- ing screws) are tight.
Cooling | Cooling |
fins | |
fins |
|
Cooling fins
Remove all dirt and debris from the engine and check the cooling fins
10-Hour maintenance
(more frequently in dusty conditions)
1.Remove the air cleaner cover by loosening the cover screw(s) and lifting.
2.Remove the air cleaner element.
■■In dusty applications the filter should be gently blown out with com- pressed air daily or 2 to 3 times per week.
IMPORTANT!
Direct the air stream at the inside face of the filter only!
■■Once each week the filter should be cleaned with a solvent to loosen and flush out debris trapped between the filter halves. Allow the filter to dry thoroughly before using again. When the felt becomes unrav- eled the filter should be replaced. Replace air cleaner element and cover.
Unscrew |
Fasteners |
Air Filter |
Element |
Loosen air cleaner cover screws |
CAUTION!
Never operate the unit if the air cleaner assembly is damaged or missing!
10/15-Hour maintenance
Remove and clean or replace the spark plug.
■■Adjust the spark plug electrode gap to 0.6 mm (0.024 inch). If the spark plug must be replaced, use only an NGK BPM8Y spark plug.
CAUTION!
Before removing the spark plug, clean the area around the plug to prevent dirt and debris from getting into the engine’s internal parts.
Remove and inspect spark plug
0.6 mm
(0.024 inch)
Clean the spark plug
and check the gap at the
electrode.
15
