eHT752S / eHT602D
8. Maintenance
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| Every | Every | Every |
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| System/components | Procedure | Before | 25 | 50 | 100 | Note |
| use | hours | hours | hours | |||
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| after | after | after |
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| fuel leaks, fuel spillage | wipe out | ✔ |
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| fuel tank, air filter, fuel filter | inspect/clean | ✔ | ✔ |
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| replace, if necessary |
| idle adjusting screw | see adjusting | ✔ |
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| replace carburetor |
ENGINE | idling speed |
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| if necessary | ||
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| spark plug | clean and readjust |
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| ✔ |
| GAP: 0.6 ~ 0.7 mm |
| plug gap |
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| replace, if necessary | ||
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| cylinder fins, intake air cooling vent | clean |
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| muffler, spark arrester, cylinder exhaust port | clean |
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| throttle lever, ignition switch | check operation | ✔ |
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TRIMMER | cutting parts | replace if | ✔ |
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something’s wrong |
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| gear case | grease |
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| screws/nuts/bolts | tighten/replace | ✔ |
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| ✔ | not adjusting screws |
| debris guard | make sure to attach | ✔ |
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WARNING
•Make sure that the engine has stopped and is cool before performing any service to the machine. Con- tact with moving cutting head or hot muffler may result in a personal injury.
BLADE
•Check the blade and the fasteners for looseness, cracking, or bending.
•Check the cutting edges and reform with a flat file.
Point :
1.Keep the end corner sharp.
2.Round the root of the edge.
3.Do not use water when using a grinder.
•You need not to adjust the gap between upper blade and lower blade as this product is designed to have optimal gap when it is properly set up.
(1)Bolt
(2)Plate
(3)Spacer
(4)Nut
IMPORTANT
When mounting the blade, make sure to fasten the spacer, washer and bolt, then fasten the nut.
■SHARPENING
Always keep the file or sharpener at an angle of 45° to the blade, and:
•Always grind in the direction of the cutting edge;
•Note: files cut only in one direction; lift the file from the blade when returning to start a new pass;
•Remove all burr from the edge of the blade with a slip stone;
•Remove as little material as possible;
•Before refitting the sharpened blades, remove filings and then apply grease.
Do not try to sharpen a damaged blade: change it or take it to a Service dealer.
