Maintenance Instructions | ADJUSTMENTS |
Low Idle Mixture
Needle Valve
(May be
Idle Speed
ScrewFixed Main Jet Under
Shutdown Solenoid
Carburetor Adjustment
DANGER
The engine must be running to adjust the carburetor for engine idle. To guard against injury, keep hands, feet, face, and other parts of body away from the muffler/ exhaust pipe, other hot parts of the engine, and moving or rotating parts of the engine.
3.Start the engine and allow it to warm up by run- ning at 1/2 throttle for approximately five (5) minutes. The engine must be warm before making final settings.
4.Move the throttle to the idle position. Adjust idle speed for 1200 rpm (± 75 rpm) by adjusting the idle speed screw. Check the idle speed using a tachometer.
5.With the engine idling, adjust the idle mixture by turning the idle mixture needle valve in (slowly) from the preliminary setting until engine speed decreases and then back out approximately 3/4 to 1 turn to obtain the best low speed perfor- mance.
6.Recheck idle speed after the final idle mixture adjustment.
GHS “Full” Signal Horn with
If the GHS “full” signal horn is not sounding when the catcher is full, the following troubleshooting instructions apply:
Troubleshooting (When Horn Fails to Operate)
1.Check the horn.
a.Disconnect the two wires from the Grass- Pak® switch electric connector plug and make a jumper wire connection between these wires (bypassing switch).
b.Turn the ignition switch ON and move the blade clutch to the ENGAGED position (engine not running) to make the horn sound.
c.If the horn does not sound, the horn is bad and needs to be replaced.
d.If the horn does sound, proceed to step 2.
2.Check the
a.Reconnect the wires to the
b.Turn the ignition switch ON and move the blade clutch to the ENGAGED position (engine not running).
c.Open the catcher back door and trigger the
d.The horn should sound as the switch is moved in both directions. If the horn does not sound, the switch is bad and needs to be replaced.
WARNING
DO NOT test the
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