
OPERATOR’SMANUAL18.5, 21, 24, 26HP Zero-Turn RidersMfg. No. Description7800360 Simplicity Axion Model ZT18533, 18.5HP w/ 33” Mower7800380 Simplicity A
OPERATION8Ground Speed Levers These levers control the ground speed of the rider. Theleft lever controls the left rear drive wheel and the rightlever
9Choke CLOSE the choke for cold starting (pull knob up). OPENthe choke once the engine starts (push knob down). Ifthe engine is warm, it may not requ
10WARNINGNever allow passengers to ride on the unit.Before leaving the operator’s position for anyreason, engage the parking brake and disengagethe PT
119. Stop the rider and engine (see STOPPING THERIDER AND ENGINE).PUSHING THE RIDER BY HANDNOTE: Do not disengage the transmissions if parked ona slop
12DRIVING PRACTICE - BASIC DRIVINGWARNING: Never operate on slopes greater than 17.6%(10°). See SLOPE OPERATION in the safety section.Zero turn rider
13ADVANCED DRIVINGExecuting an End-Of-Row Zero TurnYour zero turn rider’s unique ability to turn inplace allows you to turn around at the end of acutt
14MOWER DECK REMOVAL &INSTALLATION - 33” DECKSNOTE: Perform mower removal and installation on ahard, level surface such as a concrete floor.Removi
15MOWER DECK REMOVAL &INSTALLATION - 42” & 50” DECKSNOTE: Perform mower removal and installation on ahard, level surface such as a concrete fl
16MAINTENANCEMAINTENANCE SCHEDULEThe following schedules should be followed for normal care of your rider and mower. * More often in hot (over 85° F:
17Rider Maintenance ItemsACCESSING THE ENGINECOMPARTMENTLift up on the back edge of the seat deck to access theengine compartment. CLEAN DEBRIS FROM
18Figure 20. Arbor Lubrication (3-Blade Model Shown, All Models Similar)Figure 18. Mower Lubrication - 42” DeckLUBRICATIONService Interval: 25 hours.L
19Figure 21. Lubricating RiderFigure 22. Lubricating RiderFigure 23. Lubricating Mower Lift
20CLEAN DECK & CHECK / REPLACE MOWER BLADESService Interval: 25 hours or as required.1. Remove mower deck (see “Mower Deck Removal” inthe OPERATIO
Figure 28. Blade Installation - 42” DeckA. 4x4 Wood Block C. Blade NutB. Spring Washers D. Lift WingsABCD21Figure 27. Blade Installation - 33” DeckA
22CLEAN THE BATTERY AND CABLESService Interval: 100 Hours1. Disconnect the cables from the battery, negativecable first (B, Figure 30).2. Remove the r
23CHECK / ADJUST PTO CLUTCH Service Interval: 200 Hours.The Power Take Off (PTO) clutch drives the mowerblades. The PTO clutch is engaged and disenga
24Figure 33. Recommended Engine Oil - Briggs & Stratton ModelsUse oil classified API Service Class SF, SG, SH, SJ or better with SAE Viscosity:1
25SERVICE AIR FILTER & PRE-CLEANER - 18.5 & 21 HPENGINESNOTE: Air filter configuration may differ from shown.Consult engine manual for further
26Figure 37. Air Filter CoverA. Air Filter Cover ScrewsASERVICE AIR FILTER -24 & 26HP ENGINESNOTE: Air filter configuration may differ from shown
271.Pre-Cleaner Air Filter1.2.2.Figure 40. Air Filter ServiceREPLACE SPARK PLUGService Interval: YearlySpark Plug Gap: .030” (.76mm)1. Stop the engin
1TABLE OF CONTENTSSafety RulesGeneral Operation...2Transportation & Storage ...
28SERVICE & ADJUSTMENTSGROUND SPEED CONTROL LEVERADJUSTMENTThe control levers have three adjustments: To Adjust Control Lever Height: Pull the l
29BRAKE ADJUSTMENT 1. Stop the unit, turn the ignition OFF, set the groundspeed levers to START/PARK positions, set theparking brake lever to the ENGA
30Figure 45. Measure Blade Tips to GroundA. Mower DeckB. Blade TipC. Level GroundABCFigure 46. Orient Blades Side-to-SideMOWER DECK LEVELING ADJUSTM
31Figure 48. Measure Blade Tips to GroundA. Mower DeckB. Blade TipC. Level GroundABCFigure 49. Orient Blades Side-to-SideMOWER DECK LEVELING ADJUSTM
32Figure 51. Orient Blades Front-to-BackFront To Back Leveling - 33” DeckIf the cut is uneven, the mower may need leveling.Unequal or improper tire p
Figure 53. Orient Blades Front-to-BackFront To Back Leveling - 42” & 50” DecksIf the cut is uneven, the mower may need leveling.Unequal or improp
34MOWER BELT REPLACEMENTMower Drive Belt Replacement - 33” Decks1. Park the rider on a level surface. Disengage the PTO,turn off the engine, set the g
35Mower Drive Belt Replacement - 50” Decks1. Park the rider on a level surface. Disengage the PTO,turn off the engine, set the ground speed controllev
36TROUBLESHOOTINGWhile normal care and regular maintenance will extendthe life of your equipment, prolonged or constant usemay eventually require that
37Troubleshooting the MowerPROBLEM CAUSE REMEDYMower cuttingheight does notadjust.Cutting height motor screw dirty or requireslube.Thoroughly clean an
2SAFETY RULESGENERAL OPERATION1. Read, understand, and follow all instructions in themanual and on the unit before starting.2. Do not put hands or fee
38SPECIFICATIONSENGINE (18.5HP):Make Briggs & StrattonModel ELSHorsepower 18.5 @ 3600 rpmDisplacement 30.59 Cu. in (500cc)ENGINE (21HP):Make Brigg
39SERVICE ITEMSReplacement PartsReplacement parts are available from your authorizeddealer. Always use genuine Simplicity or SnapperService Parts.Tec
40Lawn Care& Mowing InformationLC-1HOW AND WHEN TOWATER, FERTILIZE &AERATEMost lawns are watered too often,but with too little water. Howevert
41LC-2Lawn Care & Mowing InformationWHEN AND HOW OFTEN TO MOWThe time of day and condition of the grass greatly affect the results you’llget when
MANUFACTURING, INC.500 N Spring Street / PO Box 997Port Washington, WI 53074-0997www.SimplicityMfg.comBriggs & Stratton Yard Power Products Group
3CHILDRENTragic accidents can occur if the operator is not alert to thepresence of children. Children are often attracted to the unitand the mowing ac
4WARNING: To avoid serious injury, operate your unit up and down the face of slopes, never across the face. Do not operate on slopes greater than 10 d
5SERVICE AND MAINTENANCESafe Handling of Gasoline1. Extinguish all cigarettes, cigars, pipes, and othersources of ignition.2. Use only approved gasoli
6SAFETY & OPERATION DECALSThis unit has been designed and manufactured toprovide you with the safety and reliability you wouldexpect from an indus
7IDENTIFICATION NUMBERSID TagWhen contacting the service center for replacementparts, service, or information you MUST have thesenumbers.Record your m
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