SERVICE INFORMATION
CS-360WES
8
2-3 Adjusting carburettor
1. Start and warm engine for 1 minute alternating
engine speed between WOT and idle every 5 sec-
onds. Turn H mixture needle (C) anticlockwise until
engine speed drops to approx. 12,000 r/min at WOT.
NOTE :
Do not run engine at high speed without
load longer than 10 seconds, or engine damage
may occur.
2. Adjust L mixture needle (B) using D-shaped tool
(A) to reach maximum engine speed just before
lean drop off.
3. Set idle engine speed to 3,900 r/min by turning Idle adjust screw (D). Engine speed should be stable
at 3,900 +/- 50 r/min after Idle adjust screw adjustment.
4. Turn L mixture needle (B) anticlockwise reducing engine idle speed 700 r/min to set idle speed at 3,200
r/min. The engine idle speed ranges 3,100 - 3,300 r/min.
NOTE :
Engine speed must be allowed to stabilize a minimum of 20 seconds after each adjustment of L
mixture needle to assure accurate tachometer readings.
5. Before adjustment, WOT engine speed should be 12,000 r/min or less. If engine speed is higher, turn
H mixture needle (C) anticlockwise until 12,000 r/min is achieved. To make the
fi
nal WOT engine speed
adjustment, turn H mixture needle (C) clockwise in 1/8 turn increments with the engine at idle, then
squeeze throttle trigger and check WOT engine speed. The
fi
nal WOT engine speed should fall within
12,600 - 13,000 r/min range.
6. Start engine, and verify engine idle speed ranges from 2,800 to 3,600 r/min, and WOT engine speed
ranges from 12,500 to 13,100 r/min. Make sure the chain does not rotate when engine is idling. When
fi
nal adjustment is completed, the engine should idle, accelerate smoothly, and attain WOT per above
speci
fi
cations.
NOTE:
Engine WOT, and idle engine speed in
fi
eld operation may vary from
fi
nal adjustment speci
fi
ca-
tions due to changing ambient conditions, fuel, and engine loads. Safe engine speed variances should be
within the WOT, Idle engine speed ranges listed in Section 1-2, otherwise the carburettor should be read-
justed.
(C)
(B)
(D)
