Dolmar MG5300.4 Original Instruction Manual page 16

3. The appropriate clearance between two elec-
trodes of spark plug is 0.7 to 0.8 mm. Adjust to the
correct clearance when it is too wide or too narrow.
Clean thoroughly or replace the spark plug if it has
accumulated carbon or contaminated.
For replacement, use NGK CMR6H.
0.7 mm – 0.8 mm (0.028" – 0.031")
4.
To close the plug cover, make a half turn of it, and
press around the dented part.
► 1. Plug cover
Cleaning the fuel filter
CAUTION:
Make sure there is no damage on
the fuel tank. If there are any damage on the fuel tank, ask
authorized service center immediately for repair.
NOTICE:
Clean the fuel filter regularly. Clogged fuel filter
may cause difficulty of start-up or failure of engine speed increase.
Check the fuel filter regularly as follows:
1
► 1. Fuel tank cap 2. Fuel filter 3. Hose clamp
1
2 3
16 ENGLISH
1. Remove the fuel tank cap, drain the fuel to empty
the tank. Check the tank inside for any foreign materi-
als. If any, wipe clean such materials.
2. Pull out the fuel filter with wire through the fuel
filling port.
3.
If the fuel filter surface is contaminated, clean it
with gasoline.
NOTICE:
Follow the method specified by each
local authority for disposing the gasoline used for
cleaning the fuel filter.
NOTICE:
Replace the fuel filter if it is exces-
sively contaminated.
4. After checking, cleaning or replacing, insert the
fuel filter into the fuel pipe and fix it with the hose clamp.
Reset the fuel filter in the fuel tank and tighten firmly the
fuel tank cap.
Adjustment of idling speed
CAUTION:
The carburetor is factory
adjusted. Never adjust other than idling speed.
For other adjustments, ask your authorized service
center.
Appropriate low-speed rotation is 2,800 min
If it is necessary to change the rotation speed, adjust
the idle speed with a Phillips screwdriver.
If the engine stops or runs unsteadily at idle, turn
the adjusting screw to the right, and the idling speed
increases. If the machine blows too strong at idle, turn
the adjusting screw to the left, and the idling speed
drops.
1
► 1. Idling adjusting screw
Checking throttle valve
If the control cable is bent or caught, the throttle valve
does not contact with the idle adjusting screw, and it
prevents the engine from proper idling. In such a case,
reposition the control cable to ensure proper valve
movement.
-1
(rpm).