MMZ Jr.
TABLE OF CONTENTS Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 General Safety Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 A.Danger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 B. Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORWARD The 18HP MMZ Jr. Hydrostatic Zero-Turn Commercial Riding Mower provides superb maneuverability. The machine incorporates many safety features that should be studied by all operators before use. The list of safety precautions should receive particular attention. This manual presents all of the operating and maintenance instructions necessary to keep your mower at peak efficiency. If operated and maintained properly, your mower will give dependable service.
GENERAL SAFETY OPERATIONS 6. 7. A. DANGER 1. 2. 3. 8. Do not operate machine in confined areas where exhaust gases can accumulate. Do not operate machine without mower chute deflector in place and operational. Do not carry passengers. 9. 10. B. WARNING 1. Do not operate machines under the influence of alcohol or drugs. 2. Do not operate machines without all guards and safety devices in place and functional. 3. Do not start machines if there are fuel or oil leaks or spillage — clean it up. 4.
11. When looking for oil leaks, never run your hand over hydraulic hoses, lines or fittings. Never tighten or adjust hydraulic hoses, lines or fittings while the system is under pressure. If high-pressure oil penetrates the skin, the oil must be removed within a few hours by a doctor familiar with this form of injury or serious complications may result. 12. B. Related to Fuel 1. 2. 3. 4. 5. 6. 7. 8. Fuel is highly flammable. Please respect it. Do not smoke or permit others to smoke while handling fuel.
SAFETY DECALS AND LABELS WARNING SHIELD MISSING DO NOT OPERATE Part Number: 00030635 DANGER Part Number: 01003858 ROTATING BLADE Do not put hands or feet under or into mower when engine is running. Part Number: 00030633 Part Number: 01003449 Part Number: 01003859 Part Number: 01003450 Part Number: 01002166 TO R E D U C E T H E R I S K O F I N J U RY, D O N O T O P E R AT E M O W E R U N L E S S DISCHARGE CHUTE COVER OR GRASS C AT C H E R I S IN I T S P RO P E R PL AC E .
SPECIFICATIONS Engine: Type: Air Cleaner: Lube System: Starter: Traction Drive: Hydraulic Tank: Cutter Deck;Drive: Clutch: Deck Lift: Cutting Height: No.
OPERATING INSTRUCTIONS Figure. 1 Electric Blade Clutch Switch Figure. 2 Tach and Hour Meter Engine throttle Choke Lever Ignition Switch A.General ing and raise the cutting deck to the transport position. Always allow other vehicles to have the right of way. l.
B.Controls c. Avoid turning when going downhill, traction is at a minimum going downhill. d. Do not operate with discharge side of the mower toward streets, buildings, playgrounds, parking lots, other machines, animals, and other people. e. Avoid operation or use extreme care if the traction surface is wet, unstable, or slippery. f. Use extra care when grass clippings, leaves, pine needles, or debris are present as traction can be reduced. g.
Steering Levers Deck Lift Handle Brake Figure. 4 Fuel Shutoff Valve Figure. 3 Electric Blade Clutch Switch: (See Figure 1.) Located on the right side of the mower beside the ignition switch. This is an “on/off” push pull switch that controls the electric blade clutch which supplies power to the cutting blades through the PTO. The switch must be cut off to start the engine and should be off for safety any time another person approaches the mower or the mowing deck is raised to the transport position.
C.Initial Adjustments the procedures below to set the appropriate angle to the mowing deck. a. Park the mower on a flat paved surface, engage the parking brake, shut off the engine, remove the key from the ignition switch, remove connection of the spark plugs and using the transport lever, lower the mowing deck into the cutting position. b.
clockwise a few turns. Adjust both front and rear Deck links as necessary. Retighten nuts. f. Raise the mowing deck to the transport position using the transport lever. g. Use the transport lever to lower the mowing deck to the cutting position and repeat step “b.” above to make sure that the desired cutting height has been attained. If the dimensions are not correct, repeat steps “c.” through “f.” above. bystanders, damage to the machine, or damage to nearby facilities. d.
ning. Sit down and the engine should run. Turn off the PTO by pushing the control switch down. h. To drive in the FORWARD direction: 1. Set the engine speed to 2000 to 2500 rpm (refer to tachometer on right control panel). This must be increased to full speed (3525-3675 rpm) after becoming familiar with the machine. 2. Release the park brake. 3. Move both lap bars out of the neutral/ start position to the neutral position (toward center of machine).
d. Turn the electric blade clutch switch “Off”. e. Push the throttle control to a position a third of the way between slow and fast. f. Insert the key in the ignition and start switch and turn the switch to “On”. g. Gasoline Engine: If the engine is cold, push the choke to the on position. h. Turn the ignition key in a clockwise direction to the “Start” position until the engine starts. i. j. Note: Do not hold the key in the “Start” position for more than 10 seconds or you may damage the starter.
Cotter Pins Figure. 6 Cotter Pins Height of Cut Clevis 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.
Cover Plate Spindle Figure. 8 1. Adding Hydraulic Oil (use SAE20W 50) a. Place the Mower on a level surface and engage the parking brake. b. Stop the engine and remove the key from the ignition switch. c. Clean the area around the Hydraulic Oil fill neck. d. Remove the hydraulic fill cap and check the level. The correct level is up to the lowest hole of the oil tank fill neck. e. Pour hydraulic oil into the reservoir up to the lowest hole in the oil tank fill neck, if necessary. Figure. 7 e.
drain oil from both left and right axles. Replace and retighten nuts. c. Store the battery with a full charge. A discharged battery will freeze (refer to the table below).. Transmission Figure. 9 j. Coat new filter seal with oil before installation. Install new hydraulic oil filter filled with new oil. k. Add proper amount of hydraulic oil to reservoir. l. Run and purge gearboxes. Check oil level. m. Add proper amount of hydraulic oil to reservoir and repeat step L.
other electrical components. This is a standard plug-in type automotive fuse rated at 7.5 amp. 7. Safety Switches: There are five safety switches in the electrical circuit which control the engine. They are (1) the blade clutch switch, (2) the parking brake switch, (3) the left and (4) the right steering lever switches and (5) the seat switch.
the other side of the caster yoke. Then tighten the locknut on the end of the axle assembly. the wiring harness and the connections to the seat switch, the blade clutch switch and the electric blade clutch. Then check out the seat switch, the blade clutch switch and finally the electric blade clutch. Lower the mower off the jack and continue mowing. The wheel with the leaking tire should be taken to the maintenance area, the tire inflated to 20 psi and the wheel placed in a large bucket of water.
Note: If you wish to move the mower by pushing, you must release the dynamic braking. Locate the levers at the rear of the mower. Pull both levers out and lock in position. After pushing the mower to the desired location, return both levers to the operating position (See photo below). 2. damaged hoses. Make certain there are no kinks or twists in any hose. Hydraulic Oil Tank and Filter: Note: Change the hydraulic oil and the oil filter after the first 50 hours of operation and every 500 hours thereafter.
cavitation to develop which can destroy the pumps in a short time. back out to the neutral position, pivot the seat forward and loosen the jam nut on the lever return rod where it is threaded into the hexshaped end of the lever return bolt. If the steering lever was pushed forward, turn the hex-shaped lever return bolt clockwise onehalf turn off of the lever return rod. If the steering lever was pulled back, turn the hex shaped lever return bolt counterclockwise one-half turn onto the lever return rod.
i. Inspect the hydraulic hoses, lines and fittings. Replace as necessary. j. Jack the mower up and store it on blocks to take the weight off of the tires. 2. To Put the Mower Back in Service: a. Check the battery. Charge if necessary. b. Gasoline Engine Only: Remove the spark plugs and wipe them off. Using the starter, crank the engine to pump the excess oil out of the spark plug holes. Replace the spark plugs and the ignition leads. Refill the fuel tank with fresh gasoline. c.
. OIL CHART Apply a few drops of SAE 20W-50 engine oil or use a spray lubricant. Apply the oil to both sides of pivot points. Wipe off any excess. Start engine and operate mower briefly to insure that oil spreads evenly.
Performance Adjustments B. Enginge RPM Check and Adjustment A. High Speed Tracking Adjustment If mower tracks to one side with both lap bars in fully forward position: 1. 2. 3. 4. 5. 6. High RPM Spec. Low RPM Spec. -- -- -- -- -- -- 18 HP Briggs 3600 +/-50 1650 +/-100 NOTE: RPM Specs. are for free running engines under no load. Check air pressure in all four tires: a. Pressure should be within specified ranges and balanced side-to-side. b. Rear tires 8-10 psi. recommended (20 psi MAX.) c.
g. Verify proper throttle adjustment by checking RPM readings as outlined above. b. 3. C. Deck Corner Ball Wheel Roller Settings Note: If lap bar adjustments are required, height adjustments should be made prior to angular adjustments. 1. Matching the set heights of the ball rollers on the four corners of the mower deck to the desired cut height will prevent edge scalping and minimize any side-to-side variance in cut height. 2.
1. 2. 3. 4. 5. 6. 7. Park the mower on a flat paved surface, engage the parking brake, shut off the engine, remove the key from the ignition switch, disconnect the spark plug wires and using the transport lever, lower the mowing deck into the 4" height of cut position. (The 4" height of cut position is recommended in order for one to see and obtain a measurement. Any height of cut position is acceptable as long as a proper measurement can be taken.) Check the right and left front tire pressure.
WIRING DIAGRAM 27
EQUIPMENT TWO-YEAR LIMITED WARRANTY This warranty is specific to the product manual it is attached to. For a complete list of products and warranties contact your MTD Pro dealer. Proper maintenance of your MTD Pro equipment is the owner’s responsibility. Follow the instructions in your owner’s manual for correct lubricants and maintenance schedule. Your MTD Pro dealer carries a complete line of quality lubricants and filters for your equipment’s engine, transmission, chassis and attachments. 1.
