Jacobsen G-Plex III Safety, Operation And Maintenance Manual page 64

10 ADJUSTMENT
1. Apply an even coat of backlapping compound
to the entire length of each blade of the reel.
2. Open the restriction valve on the reel valve by
turning the knob counterclockwise as far as it
will go.
3. Set the reel control lever to the right for the
backlap position .
4. Start the engine and set the throttle to low
idle. Switch the reel enable switch to the on
position. Lower heads by operating the
paddle or the foot switch.
5. Slowly turn the restriction valve knob
clockwise until the desired reel rotation speed
is attained. It should be slow enough so that
the reel will not throw off the backlapping
compound as it spins.
6. Once all the blades on the reel are uniformly
sharp, shut off the engine and switch the reel
enable switch to the off position. Set the reel
valve control to the mow position and close
the restriction valve (all the way clockwise).
NOTICE
• To ensure proper reel rotation, make sure the
restriction valve is completely closed.
7. Wash all of the backlapping compound from
all of the heads. Once they are thoroughly
cleaned and dry, apply a light film of oil to the
cutting edges to help prevent rust.
8. After backlapping, the bedknife
adjustmentshould be made again.
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JACOBSEN G-PLEX III Series: FH & FJ
SAFETY AND OPERATORS MANUAL
WARNING
ALWAYS open the restriction valve before
setting the reel control lever to BACKLAP
position. DO NOT set the reel control
lever to the BACKLAP position before
opening therestriction valve in the bypass
circuit. This will cause the reels to start
turning IMMEDIATELY at full speed.
Keep hands, feet and clothing away from
all three reels whenever the reel control
lever is placed in the backlap position.
When backlap restriction valve is closed
or being closed, all three reels will rotate in
the backlap direction.
1
A
2
1. Restriction Valve
2. Backlap Valve
3. Reel Control Lever
A. Mow Position
B. Backlap Position
N. Neutral Position
N B
3