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17
GB
Cleaning and replacing the air filter (Illustration W )
IMPORTANT
Never let the engine start or run whilst the air filter is removed.
– Loosen the nut (1) on the air filter cover (2) and remove the cover.
– Remove the pre-filter (3) and paper filter element (4).
– Clean the paper filter element every 50 operating hours.
If slightly dirty, knock the dirt off; if very dirty or damaged, replace it. Do not blast out the paper filter using compressed
air. Do not grease it.
– Clean the pre-filter every 50 operational hours.
Wash the pre-filter in hot water with liquid detergent, rinse it out, press out excess water and allow it to dry thoroughly in
air. Do not lubricate the pre-filter with oil.
– Insert the dry pre-filter on the paper filter element and fit both in the air filter plate (5). Ensure that the air filter sits firmly
in the plate.
– Put the cover (2) on the air filter and fasten it with the nut (1) on the air filter plate (5).
In the case of unfavorable operation conditions (severe formation of dust), cleaning is required after every mowing process.
Replace the paper filter element and pre-filter annually or every 200 operation hours.
(Please see original spare parts and accessories for Order No. of filter element and pre-filter)
Checking the spark plug (Illustration Y )
To check for wear, remove the spark plug connector and unscrew the spark plug. If the electrode is badly worn the spark
plug must be replaced as a matter of course. (Order no. see original spare parts list and accessories).
Otherwise it is sufficient to clean the spark plug and set the electrode gap to 0.5-0.6 mm. Screw the spark plug (pay attention
to sealing ring) into the engine by hand and tighten using the socket wrench. Press on spark plug connector. Replace the
spark plug annually.
Correct winter storage of the engine (or when not used for a long period of time)
– Empty the petrol tank or allow the engine to run until it stops due to lack of fuel.
– Switch off engine and disconnect spark plug cable.
– Drain off the oil while the engine is still warm. Fill with fresh oil (for quantity and type, see technical data).
– Clean grass and chaff from cylinder and cylinder head fins and around muffler.
– Always keep the machine in a clean condition in a closed, dry room out of reach of children.
17
TROUBLESHOOTING
Fault Possible
cause
Remedy
Engine does not start
Control bracket not pressed down.
Press control bracket to upper part of
handlebar
D
.
Fuel tank is empty.
Fill fuel tank with clean and fresh fuel.
Spark plug connector loose.
Press on spark plug connector or have it
checked by an authorized dealer.
Spark plug defective or dirty or
electrode burnt out.
Replace or clean spark plug, set electrode
gap to 0.5-0.6 mm
Y
.
Excessive fuel supply to engine
(spark plug wet).
Have it checked by an authorized dealer.
Air filter dirty
Clean or replace air filter insert
W
.
Engine performance decreases
Air filter dirty.
Clean or replace air filter insert
W
.
Spark plug contaminated with soot.
Have it cleaned by an authorized dealer.
Engine runs irregularly
Air filter dirty.
Clean or replace air filter insert
W
.
Spark plug contaminated with soot.
Have it cleaned by an authorized dealer.
Dirty engine cooling fins.
Clean engine cooling fins.
Have it checked by an authorized dealer.
Extreme vibration
Have it checked by an authorized dealer
Summary of Contents for JS63 VARIO
Page 5: ......
Page 6: ...A1 E1 B1 D L1 T3 ...
Page 7: ...U3 V3 W3 Y1 D E ...
Page 12: ...F G H M Y3 T1 ...
Page 13: ...O B4 C4 D4 R E4 ...
Page 14: ...F4 G4 W Y ...