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Dealer Setup & Adjustment Instructions
Products covered by this manual:
5900731 (500ZB2648), 5900532 (500ZB2748), 5900528 (400ZB2748), 5900506 (ZT3500B2448), 5900521 (ZT3500B2748), 5900503
(2900B2748), 5900529 (2900B2748), 5901253 (400ZB2748 ANSI-EXP), 5901274 (ZT3500B2548), 5901275 (400ZB2548), 5901276 (2900B2548),
5901277 (2900B2548 ANSI-EXP), 5901407 (ZT, 48", 25, MF, 2900, 49ST, DOM), 5901408 (ZT, 48", 25, SMI, ZT3500, 49ST, DOM), 5901409 (ZT,
48", 25, SNP, 400Z, 49ST, DOM), 5901406 (ZT, 48", 21.5, SNP, 400Z, 49ST, DOM)
ATTENTION SETUP PERSONNEL:
The safety warnings provided in this guide and
in the operator's manual included with the unit
contain important information that must be obeyed
when assembling, setting-up, operating, servicing,
transporting, or storing the unit.
These warnings are highlighted by the safety alert triangle
symbol shown above, which signifies that an important safety
message is being provided.
You must read, understand, and follow these warnings and
instructions, and use safe shop and work practices at all
times while working on or around this unit and all other
outdoor power equipment.
Quick Setup List
Page
Setup
Steps to Perform
Procedure
2
Uncrating
Remove crate & banding.
Disengage transmission release levers
Release parking brake and roll tractor
forward off skid.
Engage transmission release levers.
2
Connect Battery
Connect battery.
3
Unit Assembly
Assemble the ground speed control
levers.
Assemble the seat.
4
Check Fluid Levels
Check tire pressures.
Check engine oil level.
Check hydraulic oil level.
5
Check the Mower Assembly
Check the mower blade mounting bolt
torque.
Check & Adjust deck lift rod timing.
Check & level the mower deck.
Check deck drive belt.
Zero-Turn Riding Mower - 48" Mower Deck
Sections and items denoted by the Setup symbol
provide the information necessary to fully assemble,
test, and prepare the units described above for
delivery to your customers.
A Quick Setup List is provided on page 2 of this booklet
to help you identify and check that the items have been
performed.
Additional information concerning functional tests,
general adjustment procedures, and the location
of normal lubrication points are included in these
instructions.
Although all required lubrication and normal adjustments on
factory-assembled components are done at the factory, this
additional information is provided to assist you in ensuring that
each unit is delivered to the customer in proper working order.
Page
Setup
Procedure
9
Lubrication & Fuel Preparation
Add fuel.
Lubricate & grease all points.
Start the engine.
10
SAFETY CHECKS
Check for LOOSE HARDWARE.
Check all OPERATOR CONTROLS.
Perform SAFETY INTERLOCK SYSTEM
CHECK.
Register Product
 To register the product: log onto
www.thepowerportal.com, select
the appropriate brand, click "My
Resources," then select the "Product
Registration and Rebate" icon and
then the "New Product Registration /
Rebate" tab. Fill out and submit the
online product registration form.
1
Steps to Perform
5101454
Rev: K

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Table of Contents
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Summary of Contents for Briggs & Stratton 5900731

  • Page 1 Dealer Setup & Adjustment Instructions Products covered by this manual: 5900731 (500ZB2648), 5900532 (500ZB2748), 5900528 (400ZB2748), 5900506 (ZT3500B2448), 5900521 (ZT3500B2748), 5900503 (2900B2748), 5900529 (2900B2748), 5901253 (400ZB2748 ANSI-EXP), 5901274 (ZT3500B2548), 5901275 (400ZB2548), 5901276 (2900B2548), 5901277 (2900B2548 ANSI-EXP), 5901407 (ZT, 48”, 25, MF, 2900, 49ST, DOM), 5901408 (ZT, 48”, 25, SMI, ZT3500, 49ST, DOM), 5901409 (ZT, 48”, 25, SNP, 400Z, 49ST, DOM), 5901406 (ZT, 48”, 21.5, SNP, 400Z, 49ST, DOM)
  • Page 2: Connect Battery

    Zero-Turn Riding Mower - 48” Mower Deck Uncrating Connect Battery 1. Pull both transmission release levers (A, Figure 1) WARNING back and then down to lock the transmission release levers in the disengaged (free-wheel) position. (B) BATTERY SAFETY RULES • Battery acid causes severe burns. Avoid contact Left side with skin.
  • Page 3: Unit Assembly

    Zero-Turn Riding Mower - 48” Mower Deck HANDLE PLACEMENT ADJUSTMENT 1. Loosen the placement bolt jam nut (A, Figure 4). Unit Assembly 2. Turn the handle placement bolt (B) in or out to adjust Install Ground Speed Control Levers the amount of distance between the end of the ground speed control levers.
  • Page 4: Check Fluid Levels

    Zero-Turn Riding Mower - 48” Mower Deck SEAT POSITION ADJUSTMENT In addition to the two sets of holes in the seat mount Check Fluid Levels plate, the seat can also be adjusted forward or back using the seat adjustment lever (A, Figure 6) on the Check the Engine Oil Level seat.
  • Page 5: Deck Lift Rod Timing Adjustment

    Zero-Turn Riding Mower - 48” Mower Deck Check Deck Lift Rod Timing Check the 1. Park the machine on a flat level surface. Disengage Mower Assembly the PTO, stop the engine and engage the parking brake. Check tires for proper inflation. See Check Check Mower Blade Mounting Bolt Torque Tire Pressure.
  • Page 6: Deck Leveling Adjustment

    Zero-Turn Riding Mower - 48” Mower Deck 4. Loosen the jam nut (A, Figure 11) on the clevis. Deck Leveling Adjustment Before adjusting the deck level, the deck lift rod timing must be checked and/or adjusted. 1. Park the machine on a flat, level surface. Disengage the PTO, stop the engine and engage the parking brake.
  • Page 7: Check Deck Drive Belt

    Zero-Turn Riding Mower - 48” Mower Deck 7. For your safety, DO NOT handle mower blades WARNING with bare hands. Position the outside mower blades so that they face front-to-back. See Figure 14. Use extreme caution when rotating the idler arm 8.
  • Page 8: Adding Fuel

    Zero-Turn Riding Mower - 48” Mower Deck CHECK THE MOWER BELT IDLER TENSIONER SPRING LENGTH Adding Fuel 1. Park the machine on a smooth level surface such as a concrete floor. Disengage the PTO, engage the To add fuel: parking brake, turn off the engine and remove the 1.
  • Page 9 Zero-Turn Riding Mower - 48” Mower Deck Lubrication Lubricate the unit at the locations shown below as well as the following lubrication points. Grease (A, Figure 19): • front caster wheel axles and yokes • deck lift pivot blocks • Mower deck spindles •...
  • Page 10: Starting The Engine

    Zero-Turn Riding Mower - 48” Mower Deck Starting SAFETY INTERLOCK the Engine SYSTEM 1. While sitting the operator’s seat, engage the parking brake and make sure the PTO switch is disengaged and the ground speed control levers are locked in the This unit is equipped with safety interlock switches.
  • Page 11: Adjustment Procedures

    Zero-Turn Riding Mower - 48” Mower Deck Adjustment Procedures If any controls fails to operate properly during testing or seems to be out of adjustment, check and readjust it according to the following instructions. Return-To-Neutral Adjustment To determine if it is necessary to adjust the neutral return, perform the following steps.
  • Page 12: Parking Brake Adjustment

    Zero-Turn Riding Mower - 48” Mower Deck Parking Brake Adjustment 1. Disengage the PTO, stop the engine, engage the parking brake, and remove the key from the ignition. 2. Raise the seat plate to gain access to the parking brake components. 3.

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