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21
CLEANING OF FUEL FILTER
WARNING: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Monthly (every 50 operating hours)
Suction head in the fuel tank
The fuel lter (1) of the suction head is used to lter the fuel required by the –
carburetor.
A periodical visual inspection of the fuel lter is to be conducted. Open the –
tank cap, use a wire hook and pull out the suction head through the tank
opening. If the lter is hard or clogged up, replace it.
Replace the fuel lter at least quarterly to ensure an enough fuel supply to the –
carburetor. Otherwise an insufcient fuel supply will cause the engine start
failure and limited maximum speed.
REPLACEMENT OF FUEL PIPE
CAUTION: INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Daily (every 10 operating hours)
Replacement: Annually (every 200 operating hours)
Replace the fuel pipe every year, regardless of operating frequency. Fuel
leakage may lead to re.
If any leakage is detected during inspection, replace the fuel pipe immediately.
INSPECTION OF BOLTS, NUTS AND SCREWS
Retighten loose bolts, nuts, etc. –
Check the fuel cap and oil cap for tightness. Check for fuel and oil leakage. –
Replace damaged parts with new ones for safety operation. –
CLEANING OF PARTS
Always keep the engine clean. –
Keep the cylinder ns free of dust or dirt. Dust or dirt adhering to the ns will –
cause piston seizure.
0.7 mm - 0.8 mm
(0.028” - 0.032”)
CHECKING THE SPARK PLUG
Only 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 0.7 - 0.8 mm –
(0.028” - 0.032”). If the gap is too wide or too narrow, adjust it. If the spark
plug is clogged or contaminated, clean it thoroughly or replace it.
CAUTION: Never touch the spark plug connector while the engine is running
(danger of high voltage electric shock).
REPLACEMENT OF GASKETS AND PACKINGS
In reassembling the engine, be sure to replace the gaskets and packings with new ones.
Any maintenance or adjustment work that is not included and described in this manual is only to be performed by Authorized Service Agents.
Gear case
Grease hole
SUPPLY OF GREASE TO GEAR CASE
Supply grease (Shell Alvania 2 or equivalent) to the gear case through the –
grease hole every 30 hours. (Genuine MAKITA grease may be purchased
from your MAKITA dealer.)
Fuel pipe
Hose clamp
Fuel lter (1)
Fuel pipe