9. Maintenance
■MAINTENANCE CHART
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| first | first | every | every | every |
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| 10 | 20 | 25 | 50 | 100 |
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| system/compornent | procedure | before | hours | hours | hours | hours | hours | note |
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| use | after | after | after | after | after |
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| oil level | check/add oil, if needed | ✔ |
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| oil | change oil |
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| recheck before long- |
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| term storage |
| fuel filter, air filter | check/clean | ✔ |
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| ✔ | replace if needed |
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| fuel tank | clean/fill the correct fuel | ✔ |
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ENGINE | fuel leaks, fuel spillage | wipe out | ✔ |
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idle adjusting screw | see ■adjusting idling | ✔ |
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| replace, carburetor | |
| speed(p.18) |
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spark plug | clean and readjust |
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| ✔ | GAP: .025in(0.655mm) | |
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| plug gap |
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| replace if needed |
| the valve to rocker arm clearance | check/clean |
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| adjust, if necessary |
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| cylinder fins, intake air cooling vent | clean |
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| muffler, spark arrester, cylinder | clean |
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| exhaust port, combustion chamber |
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| throttle lever, ignition switch | check operation | ✔ |
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SHAFT | cutting parts | replace if something’s | ✔ |
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| wrong |
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debris guard | make sure to attach | ✔ |
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gear case | grease |
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| screws/nuts/bolts | tighten/replace | ✔ |
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| ✔ | not adjusting screws |
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MA1
MA2
MA3
MA4
20
■REFILLING TRIMMING LINE
1.For replacement line, use a diameter of .095 in(2.4mm). The spool is capable for a line upto 27ft(8 m)on the 4” head. Avoid using a larger line as it may cut down the trimming performance.
WARNING
For safety reasons, do not use metalreinforced line.
2.Pinch the slotted area on the both sides of the spool housing to unhook the bottom cap. (MA1)
3.Take out the spool and pull off the old line. Put one end of new line through the spool holes and pull it until the length is equal between each part of the line. (MA2)
4.Wind up the line in the correct direction as indicated on the spool. (MA3)
5.Hook each end of the line in the slot on the edge of the spool, and then put the ends through the eyelets on the housing. Make sure that the spring and the washers are in place. (MA4)
6.While holding the spool against the housing, pull the line ends to release them from the slot.
7.Line up the slot on the bottom cap with the hook
