Echo SRM-400U - Manual (Page 18)

18
NOTE
When starting, idling adjustment speed should
be adjusted not to rotate the cutting attachment.
Correct idle speed is adjusted 2,900 to 3,100 r/
min. Or 1/4 turn counter clockwise from the point
the cutting attachment stops moving. When
there is some trouble with the carburetor, refer to
your dealer.
WARNING DANGER
CUTTING ATTACHMENT MUST NOT TURN
OR MOVE WHEN UNIT IS IDLING.
CARBURETOR ADJUSTMENT
Every unit is run at the factory and the carburetor is
set in compliance with Emission Regulations, In
addition.
1.Before adjusting carburetor clean or replace air
filter and muffler, “Spark Arrestor Screen”.
2.Make sure the cutting attachment such as hedge
clipper blades or circular saw are properly
adjusted. Trimmer line should be extended to cut-
off knife.
3.Start engine and run several minutes to bring to
operating temperature. Flash choke twice during
warm-up to clear any air from the fuel system.
4.Idle Speed Adjustment
• Start engine, turn “idle” speed adjustment screw
CW until the cutting attachment begins to turn,
then turn screw out CCW until attachment stops
turning. Turn screw out, CCW, an additional 1/4
turn.
SPARK PLUG
•Check periodically.
•Standard spark plug gap is 0.6 to 0.7 mm
(0.024 to 0.028 in).
•Replace if either electrode is worn or if the
insulator is fouled by oil or other deposits.
•TORQUE = 15 to 17 N • m (130 to 145 in • lb)
NOTE
Do not over torque.
0.6 - 0.7 mm (0.024 - 0.028 in)
Gear housing
Bolt
GEAR HOUSING
• Remove the bolt every 50 hours and check.
• Replenish as necessary, but do not overfill.
- Good quality lithium multi grease is
recommendable.
CHECK FUEL SYSTEM
• Check before every use.
• After refuelling make sure fuel does not leak or
exude from around fuel pipe, fuel grommet or fuel
tank cap.
• In case of fuel leakage or exudation there is a
danger of fire. Stop using the machine
immediately and request your dealer to inspect or
replace.
Idle speed adjustment screw (T)