Checking the spark plugOnly use the supplied universal wrench to remove or to install the spark plug.–The gap between the two electrodes of the spark plug should be 0.6– – 0.7 mm(0.024” – 0.028”). If the gap is too wide or too narrow, adjust it. If the spark plug isclogged with carton or fouled, clean it thoroughly or replace it.CAUTION: Never touch the spark plug connector while the engine is running (dangerof high voltage electric shock). 0.6 mm – 0.7 mm(0.024” – 0.028”)Any maintenance of adjustment work that is not included and described in this manual is only to be performed by Authorized Service Agents.Grease holeSupply of grease to gear caseSupply grease (Shell Alvania 3 or equivalent) to the gear case through the grease–hole every 30 hours. (Genuine MAKITA grease may be purchased from yourMAKITA dealer.)Suction head in the fuel tankThe fuel filler (5) of the suction head is used to filler the fuel required by the–carburetor.A periodical visual inspection of the fuel filter is to be conducted. For that purpose–open the tank cap, use a wire hook and pull out the suction head through the tankopening. Filters found to have hardened, been polluted or clogged up are to bereplaced.Insufficient fuel supply can result in the admissible maximum speed being–exceeded. It is therefore important to replace the fuel filter at least quarterly toensure satisfactory fuel supply to the carburetor.Cleaning of muffler exhaust portCheck of muffler exhaust port (6) regularly.–If it is clogged by carbon deposits, carefully scratch the deposits out with a–suitable tool.18