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The following are instructions to prevent the possibility of bottoming out the driveline
and causing damage to the tractor or the mower:
1. Separate the two driveline halves. Connect the half with the CV joint to the tractor
PTO and the other half to the mower input shaft.
2. Hook the tractor to the mower and turn the tractor in the tightest possible turn. Hold
the half shafts side by side and mark the desired length on the outer female guard
tube leaving a ½”-1” gap between the end of the guard tube and bell guard.
3. Cut off both guard tubes the same amount as marked. Shorten both drive tubes the
same amount as guard tubes.
4. De-burr and clean filings from the drive tubes and apply grease to the inside of the
outer telescoping tube.
5. Re-measure as described in step 2. Straighten out the tractor and measure the two
driveline halves to be sure that there is a minimum of 4”-6” shaft overlap to prevent
the driveline from separating during normal operation.
3.08 - Hydraulic Lift System
Standard single action lift cylinders are used on the Flex frame. They come with in-line
restrictors to prevent a sudden drop if the hydraulics fail.
DANGER: Never use hydraulics without the restrictors installed.
For correct operation, the lift cylinders for all three mowers must be completely
extended and relieved of pressure. This is done by assuring the tractor hydraulic remote
system is in the float position. See your tractor operator’s manual for correct procedure
on how to operate single action hydraulic cylinders and most importantly on how to hold
the tractor remote supply in “Float”. The “Float” setting is critical for the proper
function of the Flex mower. Both wing mowers and rear mower must have free up and
down movement for correct operation on uneven terrain.
3.09 - Frame Adjustments
The complex frame carrier consists of three main parts: the drawbar, the center frame
which supports the two side wing mowers and the rear axle where the rear mower is
attached and is carried by the transport tires. These three components are held together
by numerous large bolts M18x45. The main objective of the frame carrier of the Flex
mower is to allow the three mowing units to follow the ground contour and float freely
and independently from each other.
In order to achieve a perfectly uniform cut, it is important that all three mowers rest
completely on the ground at all times with all of their four wheels touching. This ensures
that each individual mower cuts level and maintains a uniform cut along the entire
OPERATION 21 FRONTIER
F
LEX WING GROOMING MOWERS OPERATOR’S MANUAL