Walker MT - Manual (Page 78)

74
Maintenance Instructions
CHECKING/SERVICING
Radiator Hoses and Clamps - MTL
Inspect the radiator hoses every 200 hours for de-
terioration or damage. Also check the tightness of
the hose clamps. Good preventive maintenance
calls for complete replacement of the radiator hos-
es and clamps every two (2) years.
Blade Brake Action
Check the function of the cutter blade brake (and
blower brake on GHS models) by engaging the blade
clutch (PTO), operating the engine at full throttle, then
disengaging the clutch and measuring how quickly
the blades stop. Watch the rotation of the blade drive
shaft and blower pulley as a visual indication that
movement has stopped. If the brake is working
properly, all rotation will stop five (5) seconds af-
ter disengagement of the clutch. If the brake sys-
tem malfunctions - blades do not stop in five (5)
seconds - adjust or repair the brake before operating
the mower.
PTO U-Joints
The PTO U-joints should be inspected yearly for
looseness and wear. If either is noticed, the respec-
tive shaft or tube should be replaced. A worn U-joint
can cause vibration and extensive damage to the
PTO and deck gearboxes.
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.