Maintenance (continued)
Muffler
This unit must never be operated with a faulty or missing spark arrester or muffler. Make sure the muffler is well secured and in good condition. A worn or damaged muffler is a fire hazard and may also cause hearing loss.
Cutter blade adjustment
Spark Plug
Keep the spark plug and wire connections tight and clean.
Fasteners
Make sure nuts, bolts, and screws (except carburetor adjusting screws) are tight.
WARNING!
The cutter blades are very sharp! Always wear gloves when working around the cutter assembly.
Cutting performance of your machine de- pends a great deal on proper cutter blade adjustment. Properly adjusted blades will oscillate freely yet help prevent binding of cut material between blades. Adjust blades as follows:
1.Loosen all blade locknuts at least one full turn.
2.Tighten each blade shoulder bolt firmly, and then loosen the shoulder bolts 1/4 to 1/2 turn.
3.Working from the gearcase end, lock each bolt in place by firmly tighten- ing its locknut while preventing the shoulder bolt from turning.
When shoulder bolt adjustment is cor- rect, there should be a gap of
mmbetween the cutter blades and the flat washers, and the flat washer be- neath each bolt head should turn freely.
CAUTION!
Operating the trimmer with worn or improperly adjusted cutters will reduce cutter performance and may also damage your machine. Never operate the machine with damaged or worn cutters.
|
| Locknut |
Guide Bar |
|
|
Cutter |
| Washer |
Blades | Shoulder Bolt | |
| (should turn | |
|
| |
Adjusting cutter blades | freely) | |
| ||
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 accumula- tions of dirt or debris from the muf- fler and fuel tank. Check cooling air intake area at base of crank- case. Remove all debris. Dirt
WARNING!
Always wear gloves when working around the cutter assembly.
■■Clean any debris or dirt from the- hedge trimmer cutter blades.
■■Lubricate the blades before use and after refueling. Check the cutters for damage or incorrect adjustment.
■■Check for loose or missing screws or components. Make sure the cut- ter attachment is securely fastened.
■■Check the entire machine for leak- ing fuel or grease.
■■Make sure nuts, bolts, and screws (except carburetor adjusting screws) are tight.
Cooling | Cooling |
fins | fins |
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Cooling
fins
Remove all dirt and debris from the engine and check the cooling fins
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