Carburetor Adjustment - Echo PB-755S H Operator's Manual

MAINTENANCE
4. Inspect heat shield, and replace
if damaged.
5. Install heat shield and muffler.
6. Tighten muffler mounting bolts
(or nuts) to 110-150 kgf • cm
(95-130 in • lbf).
7. Install engine cover and attach
spark plug lead.
8. Start engine, and warm to
operating temperature.
9. Stop engine, and re-tighten
mounting bolts (or nuts) to specifications.
10. Install muffler cover.

Carburetor Adjustment

Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in
before carburetor adjustments can be made. During the break-in period your
engine performance will increase and exhaust emissions will stabilize. Idle
speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting,
emission, and durability performance up to 1,100 feet above sea level (ASL)
(96.0 kPa). To maintain proper engine operation and emission compliance
above 1,100 feet ASL the carburetor may need to be adjusted by an authorized
ECHO service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the
carburetor must be re-adjusted when operating the engine below 1,100
feet ASL, otherwise severe engine damage may result.
Level 2.
Parts Required:
Note: Every unit is run at the factory and the carburetor is set in
compliance with emission regulations. Carburetor adjustments,
other than idle speed, must be performed by an authorized
ECHO dealer.
Idle Adjustment
Before adjustment make sure that:
32
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PB-755S H/T
X7531122809
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