Ventrac 4500K Operator's Manual page 31

4500Z Kubota Gasoline Or Propane
Gasoline Use
1. Place the gas/propane selector switch in the
gasoline position.
2. Pull out the choke handle to the choke or start
position. Choke may not be required when the
engine is at operating temperature.
3. Move the throttle lever to the slow idle position.
CAUTION
Do not run the electric starter continuously for
more than 10 seconds. If the engine does not
start right away, wait 30 seconds and try again.
4. Turn the ignition key to the start position and
hold to engage the starter. Release the key
when the engine starts. NOTE: if engine fails to
start, refer to the troubleshooting section.
5. As the engine warms up, gradually push the
choke handle in to the run position. Wait until the
engine runs smoothly before each adjustment.
6. The engine and hydraulic oil must be warmed to
operating temperature before operations. Allow
the unit to run at approximately 1800 rpm until
the hydraulic fi lter is warm to touch. The hydrau-
lic fi lter is located below the front fuse panel to
the left of the dash.
Propane Use
Attention
If the temperature is 20° F (-6° C) or below, start
the power unit on gasoline and allow to warm up
for 2 minutes, then switch to LPG. Warm engines
can be started on LPG.
1. Ensure the LPG hose is properly connected to
the liquid withdrawal valve of the LPG tank.
2. Turn the liquid withdrawal valve to the on position.
3. Place the gas/propane selector switch in the
propane position.
4. Move the throttle lever to the slow idle position.
CAUTION
DO NOT move the choke handle when starting
the engine using LPG fuel. Moving the choke
handle from the run position could cause the LPG
vaporizer to break down.
GENERAL OPERATION
Operation - 31
Do not run the electric starter continuously for
more than 10 seconds. If the engine does not
start right away, wait 30 seconds and try again.
5. Turn the ignition key to the start position and
hold to engage the starter. Release the key
when the engine starts. NOTE: if engine fails to
start, refer to the troubleshooting section.
6. The engine and hydraulic oil must be warmed to
operating temperature before operations. Allow
the unit to run at approximately 1800 rpm until
the hydraulic fi lter is warm to touch. The hydrau-
lic fi lter is located below the front fuse panel to
the left of the dash.
Switching Between Gasoline And Propane
4500Z
To convert the fuel being used (gasoline ↔ propane)
while the engine is running, the engine must be at full
throttle and under no load. If you convert the fuel with
the engine at low speed, the engine will shut off.
1. Ensure the fuel shut-off valve is turned to the on
position if converting to gasoline, or the liquid
withdrawal valve is on if converting to propane.
2. Move the throttle lever to the fast position.
3. Switch the gas/propane selector switch to the
desired fuel.
4500Y Kubota Diesel
1. Move the throttle lever to just past the half
throttle position.
2. Turn the ignition key to the run position to activate
the glow plugs for preheating the combustion
chamber. When the glow plug indicator light turns
off, the engine is ready to start. If the engine is
at operating temperature, the engine does not
need to be preheated. If the ambient temperature
is below 23° F (-5° C), the preheating cycle may
need to be repeated prior to starting.
Do not run the electric starter continuously for
more than 10 seconds. If the engine does not
start right away, wait 30 seconds and try again.
3. Turn the ignition key to the start position and
hold to engage the starter. Release the key
when the engine starts. NOTE: if engine fails to
start, refer to the troubleshooting section.
4. The engine and hydraulic oil must be warmed to
CAUTION
CAUTION