MTD MMZ 2554, MMZ 2560, MMZ 2254 service manual Changing the Blade Drive Belts

Page 15

WARNING:

Never mow with dull blades! Blades that are bent should be replaced! The cutting blades are sharp and can cause severe injury. Wrap the cutting surface of the blade with a rag to avoid injury.

a.Set the parking brake.

b.Clean any debris from the blades. Keep blades sharp and free of build up at all times.

c.Sharpen blades evenly at the original 30° angle to maintain balanced cutting blades. Do not sharpen the underside of the blades. Use a electric blade sharpener, a conventional electric grinder or a hand file to sharpen the blades.

d.Replace any blade with severe nicks or dents that cannot be removed by filing.

e.Check the balance of the blade after sharpening by placing it on a blade balancer. Do not use un-balanced blades.

f.If the blade dips on one end, file stock off of the cutting sur- face on that end.

Note: Blades that cannot be easily balanced—REPLACE.

3.Changing the Blade Drive Belts:

a.Set the parking brake. Remove ignition key and both spark plug caps.

b.Unscrew the wing nuts from the deck covers and remove both covers.

c.Using a 1/2" socket breaker bar or socket rachet insert the male end into the 1/2" opening in the lower idler arm assembly and pull the idler arm clockwise. While holding the idler arm back, loosen the blade drive belt from the pul- ley and slide the belt away from the pulley.

d.Remove tension of the PTO belt by moving the belt tension- ing rod. Loosen the belt retaining bolt.

e.Pull the tensioner pulley away from the belt and remove the PTO belt then remove the blade drive belt.

f.Reverse the process to install the belt. Be sure the head of the bolt is above the top of the idler pulley.

Note: When replacing belts do not overtighten. Adjust the idler pulley so that a ten-pound pull with a spring scale between two pulleys deflects the belt about 1/2".

15

Image 15
Contents Commercial Riding Mower Table of Contents Forward Safety Precautions GeneralRelated to Fuel When Mowing Specifications Controls Operating InstructionsPage Initial Adjustments Seat Adjustment Lever The SeatCheck the fluid levels and tires Vice SJ Lubricate all fittings listed in the maintenance section Break-In And OperationStart the Engine Page Removing the Mower Deck Maintenance and ServiceMower Deck Parking the MowerChanging a Blade Changing the Blade Drive Belts Changing the Spindle Assembly Stop the engine and remove the key from the ignition switchHydraulic Oil Draining Hydraulic Oil Electrical CircuitBattery Removal Installing the BatterySpecific Freezing Gravity Temp F Jump Starting Page Inflation Pressure TiresBrakes Hydraulic Oil Tank and Filter Hydraulic SystemRemoving the cap to prevent dirt from contaminating the oil Page Storage To Put the Mower Back in ServiceWeekly or Every 50 Hour Checks Maintenance ScheduleDaily Checks Every 25 Hour ChecksCheck the oil in the hydraulic reservoir Yearly ChecksLubrication Chart Wiring Diagram Page Equipment TWO-YEAR Limited Warranty