Prochem Apex GTX - Manual (Page 51)

49
Maintenance
High Altitude Operations - Gas
Altitude compensation kit is applied for EPA and CARB
certified engines only. EPA and CARB emission regu-
lations require the ultimate users of non-road SI
engines, as their obligation, to adjust the emissions by
installing the appropriate genuine altitude compensa-
tion 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.
Contact your local Kubota dealer and specify your
engine type and engine serial number to get the
Altitude compensation kit part number, and for further
information, installation and use.
Check Valve (Solution Outlet)
Inspect the check valve whenever doing service on the
chemical pump or if flow problems occur in the
chemical system:
1. Remove the check valve. Be sure the small o-ring
for the seat comes out with the check valve.
2. Remove the seat, using a 5/16" Allen wrench.
3. Check the Teflon seat for debris or wear. Clean or
replace Teflon seat if needed.
4. Clean the poppet and spring, inspect for wear or
damage, and replace as needed.
5. Re-assemble the check valve. Start the seat by
hand, tighten using a 5/16" Allen wrench. DO NOT
over-tighten seat.
NOTE: Improper seating of the check valve poppet,
damaged spring or o-rings will cause poor operation
of the chemical system.
6. Lubricate the o-rings with o-ring lubricant Part
#86265430 and reinstall.
Altitude Compensation
Ki
Applicable Altitude
Ranges
Original carburetor (with
0m Kit)
0 m to 700 m
0 ft to 2300 ft
1000 m compensation
kit
300 m to 1700 m
1000 ft to 5600 ft
2000 m compensation
kit
1300 m to 1700 m
4300 ft to 8900 ft
Use 5/16 Allen
Wrench to remove
Tight wrap
On spring
86341750 APEX GTX