Echo CS-310

FUEL SYSTEM
CS-310
34
4-11 Inspecting metering lever height
1. Remove carburetor.
2. Remove metering diaphragm cover, metering
diaphragm and gasket.
3. Inspect metering lever (A) height by Metering
lever gauge 897563-19830 (B).
Metering lever height: 1.65 mm (0.065 in) lower
than diaphragm seat (C).
4. If necessary, gently bend metering lever up or
down to set metering lever to proper position.
NOTE:
When metering lever is:
Too high
→
Fuel fl ooding occurs
Too low
→
Fuel starvation / overheating occurs
1.65
0.4
1.35
1.5
4-10 Inspecting crankcase pulse passage
1. Drop a little oil in pulse hole (A) on intake bel-
lows (B).
2. Remove spark plug and pull starter grip several
times. Oil should spit back from the hole.
3. If not, inspect whether pulse passage is clogged.
Repair or replace as required.
A
B
A
A
C
B