CARBURETOR — Inspection and Adjustment
EF & EC-653prose procedureAccelerating Pump
- 1With engine stopped, turn the throttle lever and ensure that the fuel is injected smoothly through the injector located in primary port.
- 2If accelerating pump is out of order, check link, lever pump piston, limiter, etc.
NOTE
A pump stroke limiter serves to inject a small amount of fuel immediately after throttle lever movement.
CAUTION
Do not bend stroke limiter.
Dash Pot
- 1Warm up engine sufficiently. Idle speed of engine and mixture must be well tuned.
- 2Turn throttle lever by hand, and read engine speed when dash pot stem just touches stopper lever.Dash pot touch speed: 1,900 ± 200 rpm
SEF620K - 3If out of specifications, adjust it by turning adjusting screws.
- 4After adjusting, make sure that dash pot operates smoothly.
| Specification | Value |
|---|---|
| Dash pot touch speed | 1,900 ± 200rpm |
Dash pot touch speed
1,900 ± 200rpm
Fuel Cut Solenoid Valve
If the engine does not stop when the carburetor harness connector is disconnected, the solenoid valve is stuck or broken.
Connect solenoid valve lead wire to battery. Check "clicking" sound from solenoid valve when battery is connected and disconnected. If N.G., replace the solenoid valve.
CAUTION
After replacement, start engine and check to be sure that fuel is not leaking, and that fuel cut solenoid valve is in good condition.