Servicing Instructions - Dolmar MS-4211 Instruction Manual

SERVICING INSTRUCTIONS

CAUTION: Before doing any work on the brush cutter, 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 externally and inspect for damage.
• Clean the air filter. When working under extremely dusty conditions, clean
the filter the several time 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,
and the look button.
Cleaning of air cleaner
– Raise the lock lever (1) of the air cleaner cover and release the lock.
– Hold the right and left sides of the air cleaner cover, press it to the inside and
then remove it.
– Push the choke lever (2) up (arrow), to prevent dirt particles from entering the
carburetor.
– Remove the sponge element (3).
Wash it with lukewarm water and then dry it thoroughly.
– After cleaning, put back the sponge element and install the air cleaner cover
(4) and tighten the screw to secure.
NOTE: If there is excessive dust or dirt adhering to the air cleaner, clean it
every day. A clogged air cleaner may make it difficult or impossible to
start or run the engine at proper rotational speeds.
(1)
17
(2)
(4)
(3)