Prochem Apex - Manual (Page 37)

MAINTENANCE - GAS
APEX 86037630 4-9
GENERAL SERVICE ADJUSTMENTS
USE EXTREME CAUTION while servicing while
machine is running. The high-speed mechanical
parts as well as high temperature components
may result in severe injury, severed limbs, or
fatality.
ENGINE SPEED
1. This unit uses a governor to set and maintain
engine speed. The engine speed is adjusted by
shifting the throttle adjustment controller located
on the front panel.
2. The throttle adjustment lever is attached to an
internal governor. The governor has internal
weights that apply pressure to a shaft with an
extending arm. Attached to the arm is the
carburetor linkage, adjusting engine speed.
NOTE: Units are pre-set at the factory.
3. Engine RPM should drop approximately
50 RPM on high and low speed when the
vacuum inlets are covered.
DO NOT attempt to adjust without a tachometer
and NEVER adjust the engine above 2700 RPM
(Full Load). Permanent damage may occur.
HIGH ALTITUDE OPERATIONS
Altitude compensation kit is applied for EPA and
CARB certified engines only. EPA and CARB
emission regulations require the ultimate users
of non-road SI engines, as their obligation, to
adjust the emissions by installing the appropriate
genuine altitude compensation kit. The engine
manufacturer must provide such kit when the
engine is operated at an altitude that exceeds the
standard level, as guaranteed by the engine
manufacturer. For this purpose, KUBOTA
prepared an engine altitude compensation kit
described below. The ultimate users of the SI
engines must comply with the regulations through
the installation of the appropriate altitude
compensation kit for the altitude range where the
engine will be operated.
Altitude Compensation
Kit
Applicable Altitude
Ranges
Original carburetor
(with 0m Kit) 0 m 700 m
0 ft 2300 ft
1000 m compensation
kit 300 m 1700 m
1000 ft 5600 ft
2000 m compensation
kit 1300 m 1700 m
4300 ft 8900 ft
Prepare for the users who have lost original
carburetor’s jet.
Altitude compensation kit part number: Contact your
local KUBOTA dealer and specify your engine type
and engine Serial No.
Consult your local KUBOTA dealer for further
information on the altitude compensation kit.
CONSULT YOUR LOCAL KUBOTA DEALER FOR
FURTHER INFORMATION ON THIS PROCEDURE.