Servicing Instructions - Dolmar MS-20U Instruction Manual

– Wind all but about 100mm (3-15/16") of the cords, leaving the ends
temporarily hooked through a notch on the side of the spool.
– Mount the spool in the housing so that the grooves and protrusions on the
spool match up with those in the housing. Keep the side with letters on the
spool visible on the top. Now, unhook the ends of the cord from their
temporary position and feed the cords through the eyelets to come out of the
housing.
– Align the protrusion on the underside of the cover with the slots of the eyelets.
Then push cover firmly onto the housing to secure it.

SERVICING INSTRUCTIONS

COUTION: Before doing any work on the Brush cutter or Grass trimmer, always switch off the motor and pull the plug cap off the spark plug
(see "checking the spark plug").
Always wear protective gloves!
To ensure a long service life and to avoid any damage to the equipment, the following servicing operations should be performed at regular
intervals.
Daily checkup and maintenance
– Before operation, check the machine for loose screws or missing parts. Pay particular attention to the tightness of the cutter blade or nylon
cutting head.
– Before operation, always check for clogging of the cooling air passage and the cylinder fins.
Clean them if necessary.
– Perform the following work daily after use:
• Clean the Brush cutter or Grass trimmer externally and inspect for damage.
• Clean the air filter. When working under extremely dusty conditions, clean the filter the severall times a day.
• Check the blade or the nylon cutting head for damage and make sure it is firmly mounted.
• Check that there is sufficient difference between idling and engagement speed to ensure that the cutting tool is at a standstill while the
engine is idling (if necessary reduce idling speed).
If under idling conditions the tool should still continue to run, consult your nearest Authorized Service Agent.
– Check the functioning of the I-O switch, the lock-off lever, the control lever.
Cleaning of air cleaner
Clogging of the element (1) may sometimes make it difficult or impossible to
start up the engine or increase the engine speed.
After the end of operation, be sure to clean the air cleaner as mentioned below.
– Remove the air cleaner cover screw.
– Place the finger under the air cleaner cover, push down the cover lower part,
and detach the air cleaner cover.
– Take out the element (1), clean it with lukewarm water mixed with neutral
detergent, and dry it completely.
Eyelets
17
100 mm (3-15/16'')
Notches
Cover
Protrusion
Slot of eyelet