MAINTENANCE 9
62
9.19 TO BACKLAP THE REELS __________________________________________________
Check the reel and the bedknife to determine if backlapping or grinding
will restore the cutting edge.
If wear or damage is beyond the point where the cutting edges can be
corrected by the lapping process, they must be reground.
To backlap:
1.
Lower the reels to the ground, set the PTO switch in the OFF
(Down) position, set the parking brake in the ON position and
stop the engine.
2.
Loosen the valve locknut at the valve stem.
3.
Start the engine and set the throttle to the slow position.
4.
Open hood and set the backlap switch to the ON position. The
reels will start to rotate immediately.
5.
Both the front and rear reel valves contain an adjustable valve to
control the speed of the reels. The front reel valve controls the
front three reels. The rear reel valve controls the two rear reels.
Turn the valve to the left to decrease the reel speed. Repeat for
both valves.
6.
After the desired speed is set, set the backlap switch to the OFF
position and stop engine. Tighten the locknut to set the
adjustment. Start engine and set backlap switch to the ON
position to backlap.
7.
Apply lapping compound, with a long handle brush, along the full
length of the reel.
8.
When the reels are honed, carefully and completely wash off the
remaining mixture.
9.
Repeat the full procedure on the other reels.
10.
After you backlap set the backlap switch to the OFF position.
Important: The speed control valves limit reverse speed only. Once the desired reverse speed has been set the
valves can remain in this position for normal mowing. If full reverse speed is needed, for instance during operation of
vertical mowers, the valve can be fully closed (turn clockwise).
WARNING
To prevent injury, keep hands, feet and clothing away from rotating reels.
Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust
fumes can increase to dangerous levels.
!
!
4131663
Backlap
Switch
Valve
Locknut
Speed
Control
Knob
Increase
Speed
Decrease
Speed
Summary of Contents for LF550-H-T4F
Page 13: ...SPECIFICATIONS 4 12 K J C G E L A B H F D ...
Page 86: ...13 NOTES 85 13Notes ...
Page 87: ...NOTES 13 86 ...
