Echo SRM-400 User Manual download pdf (Page 17)

CAUTION

When strarting, 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 distributor or dealer.

Idle speed adjustment screw (T)

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 California Emission Regula-

tions, 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 addtional 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 = 14.2 to 15.2 N•m (125 to 135 in lb)

CAUTION

Do not over torque.

0.6 - 0.7 mm (.024 - .028 in)

Gear housing

Bolt

GEAR HOUSING

• Remove the bolt every 50 hours and check.

• Replenish as necessary, but do not overfill.

- Shell delpena or good quality lithium multi

grease is recommendable.

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Echo SRM-400 User Manual Page 17

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