Toro Workman
3300–D Operator's Manual page 34

Important If used with a hydraulic cylinder, holding
the control lever in the lower position causes the oil flow to
go over a relief valve which can damage the hydraulic
system.
1
2
Figure 31
1. Quick coupler "A" position
On Position
This position is similar to Lower (quick coupler "B"
position). It also directs oil to quick coupler "B" except that
the lever is held in this position by a detent lever in the
control panel. This allows oil to flow continuously to
equipment that uses a hydraulic motor. This position must
only be used on attachments with a hydraulic motor
attached.
Important
If used with a hydraulic cylinder or no
attachment, the On position causes the oil flow to go over a
relief valve which can damage the hydraulic system. Use
this position only momentarily or with a motor attached.
Important Check hydraulic oil level after installation
of attachment. Check operation of attachment by cycling
attachment several times to purge air from system, then
recheck hydraulic oil level. Attachment cylinder will
slightly affect transaxle oil level. Operation of vehicle with
low oil level can damage pump, remote hydraulics, power
steering and vehicle transaxle.
1. Quick coupler "B" position
34
Caution
Hydraulic fluid escaping under pressure can have
sufficient force to penetrate skin and do serious
damage. Care must be used when connecting or
disconnecting hydraulic quick couplers. Stop
engine, apply parking brake, lower attachment
and place remote hydraulic valve in float detent
position to relieve hydraulic pressure before
connecting or disconnecting quick couplers.
Quick Coupler Operation
Connection
Important Clean dirt from quick couplers before
connecting. Dirty couplers can introduce contamination to
hydraulic system.
Pull back locking ring on coupler.
Insert hose nipple into coupler until it snaps into position.
Disconnection
Note: With both the vehicles turned off, move the lift lever
back and forth to remove the system pressure and ease the
disconnection of the quick couplers.
Pull back locking ring on coupler.
Pull hose firmly from coupler.
Important Clean and install dust plug and dust covers
to quick coupler ends when not in use.
Note: When attaching remote equipment to the quick
couplers, determine which side requires pressure, then
attach that hose to quick coupler "B" which will have
pressure when the control lever is pushed forward or locked
in the ON position.