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Safety, Operation, & Maintenance Manual
Standing Zero Turn Rotary Mower
ZT90023 – SZT 2648, 48 Inch (121.9 cm) Cutting Unit
ZT90024 – SZT 2654, 54 Inch (137.2 cm) Cutting Unit
WARNING
Warning: If incorrectly used, this machine can
cause severe injury. Those who use and maintain
this machine should be trained in its proper use,
warned of its dangers, and must read the entire
manual before attempting to set up, operate, adjust,
or service the machine.
GB
700507- Rev A
®
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Summary of Contents for Jacobsen Standing Zero Turn Rotary Mower ZT90023
- Page 1 700507- Rev A Safety, Operation, & Maintenance Manual ® Standing Zero Turn Rotary Mower ZT90023 – SZT 2648, 48 Inch (121.9 cm) Cutting Unit ZT90024 – SZT 2654, 54 Inch (137.2 cm) Cutting Unit WARNING Warning: If incorrectly used, this machine can cause severe injury.
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Page 2: Table Of Contents
7.10 Towing The Mower............33 Maintenance and Lubrication Charts 8.1 Maintenance Chart............34 8.2 Lubrication Chart...............35 8.3 Fluid Requirements ............35 Proposition 65 Warning © 2015, Jacobsen, A Textron Company/Textron Innovations Inc. This product contains release “All rights reserved, including the right to reproduce this material chemicals known to the State of or portions thereof in any form.”... -
Page 3: Introduction 2
2Introduction IMPORTANT ______________________________________________________________ The Jacobsen SZT 2648 and SZT 2654 with a Gasoline engine is a self propelled rotary mower. If you follow all instructions in this manual, you increase the life of your mower and keep its maximum performance. -
Page 4: Product Identification
2 INTRODUCTION PRODUCT IDENTIFICATION_________________________________________________ Mower Serial number plate Product code and Serial number BARCODE MMMMMMMSSSSSS Seven digit product code Six digit serial number Location of Mower Serial number plate The serial number plate (A) is found on the right front frame rail. -
Page 5: Guidelines For The Disposal Of Scrap Products
Add items that can not be easily separated into different materials to the “General discarded materials” area. • Do not burn the discarded materials Change the mower records to show that the mower is not in service and is discarded. Supply this serial number to Jacobsen Warranty Department to close their records. en-4... -
Page 6: Safety
Manuals in additional languages may be available on the Jacobsen or RansomesJacobsen website. Read all of the instructions for this mower carefully. Know the controls and the correct operation of the equipment. - Page 7 SAFETY 3 3.1.3 OPERATION Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels. Never carry passengers. Keep other persons or animals away from the mower. Disengage all drives and engage the parking brake before you start the engine.
- Page 8 3 SAFETY 3.1.4 SAFE HANDLING OF FUELS The fuel and the fuel vapors are flammable. Use caution when you add the fuel to the mower. The fuel vapors can cause an explosion. Never use the containers that are not approved to keep or transfer fuel. Never keep the mower or fuel containers near an open flame or any device that can cause the ignition of fuel or fuel vapors.
- Page 9 Replace worn or damaged parts for safety. Replace damaged or worn decals. Only use parts, accessories and attachments approved by Jacobsen. To decrease the fire hazard, remove materials that burn from the engine, muffler, battery tray and fuel tank area.
- Page 10 4. Never carry passengers. 5. Never operate the equipment without a correctly fastened grass deflector in position. If additional information or service is needed, contact your Authorized Jacobsen Dealer. Your Dealer knows the current methods to service this equipment. en-9...
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Page 11: Specifications 4
SPECIFICATIONS 4 4Specifications ENGINE SPECIFICATIONS __________________________________________________ SZT 2648 / SZT 2654 Make Briggs & Stratton Model Vanguard Type Four cycle, air cooled, Gasoline Number of Cylinders Bore and Stroke 3.3 in. (8.38 cm) x 2.89 in. (7.34 cm) Total Displacement 49.42 in (0.81 l) Intake System... -
Page 12: Dimensions And Weights
4 SPECIFICATIONS DIMENSIONS AND WEIGHTS ________________________________________________ SZT 2648 SZT 2654 A - Width of Cut 48 inch (121.9 cm) 54 inch (137.2 cm) B - Maximum Width 64 inch (162.6 cm) 70 inch (177.8 cm) C - Width with Chute Up 49 inch (124.5 cm) 55 inch (139.7 cm) D - Height... - Page 13 SPECIFICATIONS 4 SZT 2648 SZT 2654 en-12...
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Page 14: Mower Specification
4 SPECIFICATIONS MOWER SPECIFICATION ___________________________________________________ Battery: 12V, 300 CCA Service Brake: Dynamic braking through the traction circuit Parking Brake: Integrated in transmission Fuel Tank: 6 U.S. Gallons (22.7 l) Steering: Hand lever speed and direction controls for left and right rear wheel ®... -
Page 15: Recommended Lubricants
54 Inch (137.2 cm) Cutting Unit Kit Number 902996 4.8.3 ACCELERATOR BAGGER___________________________________________________ Kit Number TBD SUPPORT LITERATURE ____________________________________________________ Contact your Jacobsen Dealer for a complete listing of literature available for your mower. Operator’s Manual: 700507 Mower Parts Manual: 700532 Service & Repair Manual: TBD... -
Page 16: Decals
5 DECALS 5Decals SAFETY DECALS _________________________________________________________ Understand the purpose of these decals. The decals are important to the safe operation of the mower. REPLACE THE DAMAGED DECALS IMMEDIATELY. 30229 Serious injury or death can result from blade contact or from contacting the belts or pulleys with the engine running. - Page 17 CHECK OIL WHEN COLD. MAINTAIN OIL LEVEL TO THE COLD FILL LINE ON THE RESERVIOR DO NOT TOP OFF RESERVOIR! Transaxle service interval: Initial 100 hrs., every 400 hrs thereafter OIL/FILTER CHANGE TO BE PERFORMED BY AUTHORIZED JACOBSEN SERVICE DEALER ONLY! en-16...
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Page 18: Instruction Decals
5 DECALS INSTRUCTION DECALS ____________________________________________________ 800900 ” ” ” Fast Forward ” ” ” 3.25 2.75 ” ” 3.75 ” 2.25 ” ” 4.25 1.75 ” ” Slow Forward Neutral Slow Reverse PARKING Fast BRAKE Fast Reverse Disengaged Position 800692 Steering Control Lever Engaged... -
Page 19: Controls 6
CONTROLS 6 6Controls MOWER CONTROLS _______________________________________________________ en-18... -
Page 20: Control Panel
6 CONTROLS CONTROL PANEL _________________________________________________________ 6.2.6 6.2.1 6.2.2 6.2.3 6.2.4 6.2.11 FUEL STOP 6.2.5 6.2.9 CHOKE 6.2.7 6.2.10 6.2.8 6.2.8 6.2.7 6.2.1 IGNITION SWITCH _________________________________________________________ The ignition switch has three positions, OFF, RUN and START. START STOP en-19... - Page 21 CONTROLS 6 6.2.2 PTO SWITCH _____________________________________________________________ The PTO switch is a 2-position knob type switch to engage and to disengage the cutting unit. The PTO switch must be in the OFF (down) position to start the engine. Pull on the red knob to move the switch to the ON position. When the PTO switch is in the ON position, the cutting unit is engaged.
- Page 22 6 CONTROLS 6.2.5 CHOKE CONTROL_________________________________________________________ When you start a cold engine, pull the choke control to the choke position. Slowly push the choke lever to the RUN position when the engine becomes Choke warm. Position CHOKE NOTICE Position The choke control is not necessary to start a warm engine. 6.2.6 12 VOLT OUTLET__________________________________________________________ The 12 Volt accessory outlet supplies power to 12 Volt accessories.
- Page 23 CONTROLS 6 STOP Parking Brake CHOKE Forward Stop Left-Side Steering Control Right-Side Steering Control Reverse Stop 6.2.7 CONTROL LEVER STOPS ___________________________________________________ The drive lever stops limit the forward and the reverse movement of the steering control levers. The forward stop limits mower speed in the forward direction. The reverse stop limits the mower speed in the reverse direction.
- Page 24 6 CONTROLS 6.2.10 CUTTING UNIT HOC LEVER ________________________________________________ The cutting unit height of cut (HOC) lever lifts and lowers the cutting unit. Button Lever Install the HOC pin in the correct hole for the cutting height. To lower the cutting unit, press the button on the top of the lever and lower the lever against the HOC pin.
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Page 25: Neutral Release
CONTROLS 6 NEUTRAL RELEASE _______________________________________________________ Each wheel motor has a neutral release knob to move the mower without the engine running. Neutral Release Normal Operation Position Position WARNING The mower wheels will turn with the neutral release knobs in the release position and the parking brake disengaged. -
Page 26: Operation
7 OPERATION 7Operation DAILY INSPECTION________________________________________________________ CAUTION The inspection must be done each day when the engine is turned off and all fluids are cold. Lower the cutting units to the ground, engage the parking brake, stop the engine and remove the ignition key. Do a visual inspection of the mower. -
Page 27: Opc System
OPERATION 7 OPC SYSTEM _____________________________________________________________ The OPC System prevents the engine to start unless the steering control levers are in the Neutral position, the parking brake is engaged and the PTO switch is in the OFF (Down) position. The system prevents cutting unit operation with the PTO switch in the ON position and the steering control levers in the NEUTRAL position. -
Page 28: Operating Procedure
7 OPERATION OPERATING PROCEDURE __________________________________________________ CAUTION To prevent injury, always wear safety glasses, leather work shoes or boots, a hard hat and ear protection. Always start the engine with the operator standing on the operator platform, never while next to the mower. Never start the engine with persons near the mower. -
Page 29: Starting The Engine
OPERATION 7 STARTING THE ENGINE ____________________________________________________ Start the engine with the operator on the platform, the PTO Ignition switch in the OFF position and the parking brake engaged. Switch Switch Remove your hands from the steering control levers. Throttle Set the throttle lever to half throttle. If the engine is cold, move Lever the choke to the choke position. -
Page 30: Driving
7 OPERATION DRIVING _________________________________________________________________ Read and follow all safety instructions contained in this manual when you operate the mower. When you operate in the reverse direction, look behind you to make sure you have a clear path. Do not mow in reverse. Slowly and equally push both the right-side and left-side control levers toward the forward stop to drive the mower in the forward direction. -
Page 31: Height Of Cut
OPERATION 7 HEIGHT OF CUT ___________________________________________________________ The height of cut is determined by the location of the HOC pin. Engage the parking brake, stop the engine and remove the key before you change the HOC. Use the chart to find the correct cutting height hole for the necessary HOC. Hole Hole 1-1/2 Inch (3.8 cm) -
Page 32: Mowing On Slopes
7 OPERATION MOWING ON SLOPES______________________________________________________ The mower is made to have good traction and to have good balance. Operate the mower with caution when you drive on a slope. If you drive on wet grass, the traction and steering control of the mower is decreased. WARNING To make sure that the mower does not turn over, the safest method to drive on a slope is to drive vertically. - Page 33 OPERATION 7 How to calculate a slope: Tools Required: Level (A), either 1 yard, or 1 meter long. Tape measure (B). Use the level (A) and position it horizontally to measure the distance (C) with tape measure (B). Use the chart to calculate the slope angle or the percentage grade of the slope (D).
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Page 34: Towing The Mower
Before towing, disengage the parking brake and make sure the cutting unit is lifted. NOTICE When you tow the mower, do not drive more than 2 mph (3.2 km/hr). Jacobsen recommends that you do not tow the mower for long distances. -
Page 35: Maintenance And Lubrication Charts 8
MAINTENANCE AND LUBRICATION CHARTS 8 8Maintenance and Lubrication Charts MAINTENANCE CHART Mower Service Interval Chart Interval Item Section First 5 Hours • Replace engine oil See 9.3 • Replace engine oil filter See 9.3 • Check electrical wiring See 9.15 •... -
Page 36: Lubrication Chart
8 MAINTENANCE AND LUBRICATION CHARTS LUBRICATION CHART _____________________________________________________ FLUID REQUIREMENTS ____________________________________________________ Fluid Requirements Quantity Type Engine Oil with Filter 2.06 to 2.12 quarts (1.95 to 2.01 l) SAE 10W-30 API Classification SJ Drive Axle with Filter 2.41 quarts (2.28 liter) Each SAE 20W-50 API Classification SL (2 Per Mower) Fuel... -
Page 37: Maintenance 9
The operation and maintenance during the first 5 hours of a new engine can make a difference to the performance and life of the engine. During the first 5 hours of operation, Jacobsen recommends the following. • Allow the engine to reach a temperature of at least 140° F (60° C) before operation at full load. -
Page 38: Engine Oil
9 MAINTENANCE ENGINE OIL ______________________________________________________________ Check engine oil level Check the engine oil level before you start the engine or at least five minutes after you stop the engine. Park the mower on a level surface. The dipstick is found at the right rear corner of the engine. -
Page 39: Engine Air Filter
MAINTENANCE 9 ENGINE AIR FILTER _______________________________________________________ Do not remove the elements to inspect or clean. Removal of the filter that is not necessary increases the risk of dust and other particles to enter the engine. Inner Element Clean or replace the outer filter element every 100 hours. Valve Replace the inner-safety element every third change of the outer filter. -
Page 40: Battery
9 MAINTENANCE BATTERY ________________________________________________________________ Before you service the battery, make sure the ignition switch is in the OFF position and the key is removed. CAUTION When you service the battery, always use the tools with insulation, wear protective glasses and protective clothing. Discard used batteries as shown in your local regulations. -
Page 41: Charge The Battery
MAINTENANCE 9 CHARGE THE BATTERY __________________________________________________________ WARNING Charge the battery in an area with good airflow. The battery can release hydrogen gas that is explosive. To prevent an explosion, keep any device that can cause sparks or flames away from the battery. When the battery charger is turned on, to prevent injury, stay away from the battery. -
Page 42: Drive Axle Fluid
9 MAINTENANCE DRIVE AXLE FLUID ________________________________________________________ Drain and replace the drive axle fluid and filter after the first 75 hours and each 400 hours. FULL COLD Always replace the filter when you replace the drive axle fluid. Expansion Bottle Clean the area around the vent plug, expansion bottle cap and Filter filter to prevent dirt to enter the drive axle. -
Page 43: Tires
MAINTENANCE 9 9.10 TIRES ___________________________________________________________________ Keep the tires correctly inflated to increase tire life. Inspect the tread wear. Check the tire pressure each day, while the tires are cool. Use an accurate low-pressure tire gauge. Keep the rear tires inflated to 8-10 psi (0.55-0.69 BAR). CAUTION DO NOT try to put a tire on a rim unless you have the correct training, tools and experience. -
Page 44: Air Cooling System
9 MAINTENANCE 9.12 AIR COOLING SYSTEM ____________________________________________________ The engine on the mower is an air-cooled engine. Dirt and other objects can decrease the air flow and cause the engine to overheat, cause bad performance and decreased engine life. NOTICE Do not use water to clean the engine. Water can cause contamination in the fuel system. Use a brush or clean cloth to clean the engine. -
Page 45: Sharpening Blades
• Check the OPC system, fuses and circuit breakers at normal intervals. If the OPC system does not operate correctly and you can not correct the problem, contact an authorized Jacobsen Dealer. • Keep the wiring harness away from hot surfaces and moving parts. -
Page 46: Care And Cleaning
Clean all plastic or rubber parts with a weak soap solution or use commercially available rubber cleaners. To keep the original high polish of the fiberglass parts, wax with a good grade of one-step cleaner wax. Repair damaged metal surfaces and use Jacobsen touch-up paint. Apply wax to the equipment for maximum paint protection. -
Page 47: Mower Storage
MAINTENANCE 9 9.17 MOWER STORAGE ________________________________________________________ General • Clean the mower and lubricate. Repair and paint damaged or open metal. • Inspect the mower, tighten all hardware, replace worn or damaged components. • Clean the tires and keep the mower so that the load is not on the tires. If the mower is not on the jack stands, check tires at normal intervals and add air when needed. -
Page 48: Adjustments
Always use the jack stands. A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made, contact your Jacobsen Dealer. Inspect the equipment according to the maintenance schedule and keep complete records. Keep the equipment clean. -
Page 49: Deck Level Adjustment
ADJUSTMENTS 10 10.3 DECK LEVEL ADJUSTMENT_________________________________________________ Adjust the deck level so that the blade height is the same on both sides of the mower. Park the mower on a flat and level surface. Fully raise the cutting unit. Rotate each blade until it is parallel with the mower. -
Page 50: Neutral Adjustment
10 ADJUSTMENTS 10.5 NEUTRAL ADJUSTMENT ___________________________________________________ The mower must not move with the steering control levers in the Neutral position and the parking brake disengaged. The neutral adjustment must be done separately for the left and right side axles. To adjust the neutral position: Lift the mower so the rear wheels are off the ground. -
Page 51: Torque Specification
Jacobsen uses Grade 5 (Inch) and Grade 8.8 (Metric) Plated bolts, unless a note is given. Always check the marks on the head of the bolts for the bolt grade. For tightening plated bolts, use the value given for lubricated. -
Page 52: Problem Solving
11 PROBLEM SOLVING 11Problem Solving 11.1 GENERAL________________________________________________________________ The problem solution chart lists basic problems that can occur during start and operation of the mower. For complete information about the hydraulic and electrical systems, contact your Jacobsen Dealer. Symptoms Possible Causes Action... -
Page 53: Quality Of Cut 12
QUALITY OF CUT 12 12Quality of Cut 12.1 QUALITY OF CUT PROBLEM SOLVING________________________________________ Make a “test cut” to check the performance of the mower before you start the repairs. This area must have turf conditions that are known and do not change across the area. This type of area allows an accurate inspection of the performance of the mower to be made. -
Page 54: Step Cutting
12 QUALITY OF CUT 12.3 STEP CUTTING ___________________________________________________________ Step cutting occurs when grass is cut higher on one side of a cutting unit than the other side. Step cutting can occur when one cutting unit is higher than another cutting unit. -
Page 55: Scalping
QUALITY OF CUT 12 12.4 SCALPING _______________________________________________________________ Scalping is a condition in which areas of grass are cut shorter than the adjacent areas. The area can be light green or brown. A low HOC setting or turf that is not level can cause scalping. -
Page 56: Stragglers
12 QUALITY OF CUT 12.5 STRAGGLERS ____________________________________________________________ Stragglers are separated blades of grass the are not cut, or are cut incorrectly. TN0223 NOTE: Arrow indicates direction of travel. Probable Cause Remedy Edge of the cutting blade(s) are not sharp. Sharpen the blade(s). See 9.14 Cut (ground) speed is higher than normal Reduce the cut (ground) speed. -
Page 57: Streaks
QUALITY OF CUT 12 12.6 STREAKS ________________________________________________________________ A streak is a line of grass that is not cut. The cause of a streak can be a damaged blade. TN0224 NOTE: Arrow indicates direction of travel. Probable Cause Remedy Damaged blade(s). Replace the blade(s). -
Page 58: Windrowing
12 QUALITY OF CUT 12.7 WINDROWING ____________________________________________________________ Windrowing is the deposit of clippings increased at one end of cutting unit(s) or between cutting units. Windrowing can make a line in the direction of travel. TN0225 NOTE: Arrow indicates direction of travel. Probable Cause Remedy The grass is higher than the level at which the mower... - Page 59 NOTES 13 13Notes en-58...
- Page 60 Equipment from Jacobsen is built to exacting standards ensured by ISO 9001 and ISO 14001 registration at all of our manufacturing locations. A worldwide dealer network and factory trained technicians backed by Genuine Jacobsen Parts provide reliable, high-quality product support.
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