Dolmar MS-250.4 - Manual (Page 16)

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B: Startup after warm-up operation
1) Push the primer pump repeatedly.
2) Keep the throttle lever at the idling position.
3) Pull the recoil starter strongly.
4) If it is difficult to start the engine, open the throttle by about 1/3.
Pay attention to the cutter blade which may rotate.
Attention in Operation
When the engine is operated upside down, white smoke may come out from the muffler.
STOPPING
1) Release the throttle lever (6) fully, and when the engine rpm has lowered,
set the I-O switch to STOP the engine will now stop.
2) Be aware that the cutting head may not stop immediately and allow it to
slow down fully.
ADJUSTMENT OF LOW-SPEED ROTATION (IDLING)
When it is necessary to adjust the low-speed rotation (idling), perform it by the carburetor adjusting screw.
CHECKUP OF LOW-SPEED ROTATION
– Set the low-speed rotation to 3000/min.
If it is necessary to change the rotation speed, regulate the adjusting screw
(illustrated on the left), with Phillips screwdriver.
– Turn the adjusting screw to the right, and the engine rotation will increase.
Turn the adjusting screw to the left, and the engine rotation will drop.
– The carburetor is generally adjusted before shipment. If it is necessary to
readjust it, please contact Authorized Service Agent.
Adjusting screw
Carburetor
RESHARPENING THE CUTTING TOOL
CAUTION : The cutting tools mentioned below must only be resharpened by
an authorized facility. Manual resharpening will result in imbal-
ances of the cutting tool causing vibrations and damage to the
equipment.
– cutter blade (star blade (4 teeth), eddy blade (8 teeth))
An expert resharpening and balancing service is provided by Authorized
Service Agents.
NOTE : To increase the service life of the cutter blade (star blade, eddy blade)
it may be turned over once, until both cutting edges have become
blunt.
I-O switch (1)
STOP
Throttle lever (6)