MULTIQUIP MQ62TDD Manuel d'utilisateur

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.To find the latest revision of thispublication, visit our website at:www.multiquip.comOPERATION

PAGE 10 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)RULES AND REGULATIONSNEVER touch the hot exhaust manifold,muffler or cy

PAGE 100 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)STARTER ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 101STARTER ASSY.NO. PART NO. PART NAME QTY. REMARKS1 01182384 STARTER 12 0

PAGE 102 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)CONTROL BOX ASSY. (OLD STYLE)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 103NO. PART NO. PART NAME QTY. REMARKS1 CONTROL BOX...

PAGE 104 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)CONTROL BOX ASSY. (NEW STYLE)AUX1AUX2OFFRUNHOURSSTARTFUSELOCATEDINSIDEP

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 105CONTROL BOX ASSY. (NEW STYLE)NO. PART NO. PART NAME QTY. REMARKS1 34708

PAGE 106 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)AIR FILTER ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 107AIR FILTER ASSY.NO. PART NO. PART NAME QTY. REMARKS1 01179428 TROX-HEAD

PAGE 108 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)NARROW V-BELT ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 109NARROW V-BELT ASSY.NO. PART NO. PART NAME QTY. REMARKS1 01179565 NARROW

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 11RULES AND REGULATIONS ALWAYS read, understand, and follow procedures in

PAGE 110 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)LUBRICATED OIL FILTER ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 111NO. PART NO. PART NAME QTY. REMARKS1 01174416 SPIN-ON OIL FILTER 1LUBRI

PAGE 112 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)FUEL FILTER ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 113NO. PART NO. PART NAME QTY. REMARKS1 04270708 BRACKET 12 01174696 SPIN-

PAGE 114 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)PAYMENT TERMSTerms of payment for parts are net 30 days.FREIGHT POLICYA

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 115NOTES

OPERATION AND PARTS MANUALYour Local Dealer is:HERE’S HOW TO GET HELPPLEASE HAVE THE MODEL AND SERIALNUMBER ON-HAND WHEN CALLING© COPYRIGHT 2009, MULT

PAGE 12 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRANSPORTINGALWAYS shutdown engine before transporting.Tighten fuel ta

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 13SPECIFICATIONSsnoitacificepSpmuP.1elbaTyticapaCgnipmuPmumixaM )mpl001,4(

PAGE 14 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)DIMENSIONS (PUMP/TRAILER))tnuoMreliarT(snoisnemiD.3elbaTecnerefeRretteL)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 15DIMENSIONS(SKID MOUNT))tnuoMdikS(snoisnemiD.4ELBATecnerefeRretteL)mm(.ni

PAGE 16 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)GENERAL INFORMATIONThe MQ62TDD trash pump is a self-priming trash pump

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 17APPLICATIONSFigure 3 below shows a typical application using the trashpu

PAGE 18 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)PUMP COMPONENTS13567810172220212419231819161442911121315Figure 4. Pump C

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 19PUMP COMPONENTSFigure 4 shows the location of the components and basicco

PAGE 2 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)PROPOSITION 65 WARNINGDiesel engine exhaust and some of

PAGE 20 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)ENGINE COMPONENTSFigure 5 illustrates the location of the basic compone

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 21CONTROL BOX COMPONENTSFigures 6 and 6A illustrate the location of the ba

PAGE 22 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)INSPECTIONEngine Oil1. Make sure pump/engine is on level ground.2. Pull

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 23 DANGER — Fire/ExplosionNEVER fill the fuel tank while the engineis

PAGE 24 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)SETUPBefore Starting1. Read safety instructions at beginning of manual.2

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 25ENGINE STARTUP1. Set the Engine Speed Control Lever (Figure 12) to aposi

PAGE 26 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)SHUTDOWN/STORAGEENGINE SHUT-DOWN1. Place engine speed control lever in t

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 27MAINTENANCE (PUMP)PUMP VACUUM TESTTo perform the pump vacuum test do the

PAGE 28 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)MAINTENANCE (ENGINE)General InspectionPrior to each use, the pump should

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 29MAINTENANCE (ENGINE)Check Oil LevelCheck the engine crankcase oil level

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 3REPORTING SAFETY DEFECTSREPORTING SAFETY DEFECTSIf you believe that your

PAGE 30 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)2. Remove oil filter cannister from engine by turningcannister countercl

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 31Adjustable ChannelYour trailer may be equipped with an adjustable channe

PAGE 32 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Leaf SuspensionThe leaf suspension springs and associated components(Fig

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 33TRAILER SAFETY INFORMATIONSafety precautions should be followed at all t

PAGE 34 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Driving ConditionsWhen towing a trailer, you will have decreased acceler

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 35Reporting Safety DefectsIf you believe that your vehicle has a defect th

PAGE 36 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)SAFETY WARNING LABELS ON YOUR TRAILERSome drivers place their hands at t

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 37Tow VehicleThe towing hitch attached to your tow vehicle must have acapa

PAGE 38 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Coupler TypesThe InstaPrime pump is shipped from the factory with a 2-5/

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 39 Rock the ball to make sure it is tighten to the hitch, andvisually chec

PAGE 4 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TABLE OF CONTENTSMQ62TDD TRASH PUMPProposition 65 Warning ...

PAGE 40 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Attaching Safety Chain Visually inspect the safety chains and hooks for

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 41TIRE SAFETYUnsafe Tires, Lug Nuts or WheelsTrailer tires and wheels are

PAGE 42 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Determining Load Limit of TrailerDetermining the load limits of a traile

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 43Studies of tire safety show that maintaining proper tirepressure, observ

PAGE 44 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)U.S. DOT Tire Identification Number: This begins withthe letters “DOT” a

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 45 Make sure your tire valves have valve caps. ALWAYS check tire pressure

PAGE 46 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)Lug Nut Torque RequirementsIt is extremely important to apply and mainta

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 47Figure 34. Trailer to Tow Vehicle Wiring DiagramsLIGHTS AND SIGNALSBefor

PAGE 48 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)GNITOOHSELBUORTPMUP.11ELBATMOTPMYSMELBORPELBISSOPNOITULOS.retawnoekatton

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 49 TROUBLESHOOTING (ENGINE)GNITOOHSELBUORTENIGNE.21ELBATMOTPMYSMELBORPELBI

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 5PARTS ORDERING PROCEDURESwww.multiquip.comOrdering parts has never been e

PAGE 50 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09))DEUNITNOC(GNITOOHSELBUORTENIGNE.21ELBATNOTPMYSMELBORPELBISSOPNOITULOSdn

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 51NOTES

PAGE 52 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)WIRING DIAGRAM (OLD STYLE)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 53WIRING DIAGRAM (NEW STYLE)

PAGE 54 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)The following section explains the different symbols and remarks used in

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 55SUGGESTED SPARE PARTSMQ62TDD TRASH PUMP WITH DEUTZ F2L2011/D2011L02 DIES

PAGE 56 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)NAMEPLATE AND DECALS

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 57NAMEPLATE AND DECALSNO. PART NO. PART NAME QTY. REMARKS1 7005000 DECAL,

PAGE 58 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRASH PUMP ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 59NO. PART NO. PART NAME QTY. REMARKS2 2601000010 CASING 13 26200000240002

PAGE 6 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRAINING CHECKLISTTSILKCEHCGNINIART.ON NOITPIRCSED ?KO ETAD1 .yletelpmocl

PAGE 60 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRASH PUMP ASSY. (CONTINUED)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 61TRASH PUMP ASSY. (CONTINUED)NO. PART NO. PART NAME QTY. REMARKS48 010509

PAGE 62 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRAILER TRLRMPXF ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 63NO. PART NO. PART NAME QTY. REMARKS1 0205 SCREW, HHC 3/8 - 16 x 1 82 400

PAGE 64 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TRAILER TRLR50XF ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 65NO. PART NO. PART NAME QTY. REMARKS1 0205 SCREW, HHC 3/8 - 16 x 1 82 400

PAGE 66 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)SKID ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 67SKID ASSY.NO. PART NO. PART NAME QTY. REMARKS1 19091 SKID ASSY. 1

PAGE 68 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)AXLE ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 69AXLE ASSY.NO. PART NO. PART NAME QTY. REMARKS1 29381U KIT, U-BOLT 42 293

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 7DAILY PRE-OPERATION CHECKLISTDAILY PRE-OPERATION CHECKLISTCOMMENTS:DAILY

PAGE 70 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)LIFTING BAIL ASSY. (TRLRMPXF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 71LIFTING BAIL ASSY. (TRLRMPXF)NO. PART NO. PART NAME QTY. REMARKS1 19092

PAGE 72 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)LIFTING BAIL ASSY. (TRLR50XF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 73LIFTING BAIL ASSY. (TRLR50XF)NO. PART NO. PART NAME QTY. REMARKS1 50XF91

PAGE 74 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)LIFTING BAIL ASSY. (SKID)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 75NO. PART NO. PART NAME QTY. REMARKS1 19092 LIFTING BAIL 12 6109210 1/2 -

PAGE 76 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)FUEL ASSY. (TRLRMPXF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 77FUEL ASSY. (TRLRMPXF)NO. PART NO. PART NAME QTY. REMARKS1 6109210 1/2 -

PAGE 78 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)FUEL ASSY. (TRLR50XF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 79FUEL ASSY. (TRLR50XF)NO. PART NO. PART NAME QTY. REMARKS1 6109210 1/2 -

PAGE 8 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)SAFETYFOR YOUR SAFETY AND SAFETY OF OTHERS!Safety precautions should be f

PAGE 80 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)FUEL ASSY. (SKID)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 81FUEL ASSY. (SKID)NO. PART NO. PART NAME QTY. REMARKS1 31223 FUEL GAUGE 1

PAGE 82 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)BATTERY ASSY. (TRLRMPXF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 83BATTERY ASSY. (TRLRMPXF)NO. PART NO. PART NAME QTY. REMARKS1 34596 NEGAT

PAGE 84 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)BATTERY ASSY. (TRLR50XF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 85NO. PART NO. PART NAME QTY. REMARKS1 6109100 BATTERY HOLD DOWN 12 301909

PAGE 86 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)BATTERY ASSY. (SKID)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 87BATTERY ASSY. (SKID)NO. PART NO. PART NAME QTY. REMARKS1 6109100 BATTERY

PAGE 88 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)ENGINE MOUNTING ASSY. (TRLRMPXF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 89ENGINE MOUNTING ASSY. (TRLRMPXF)NO. PART NO. PART NAME QTY. REMARKS1 016

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 9SAFETY CAUTION — Rotating Parts HazardsNEVER operate equipment with cov

PAGE 90 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)ENGINE MOUNTING ASSY. (TRLR50XF)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 91ENGINE MOUNTING ASSY. (TRLR50XF)NO. PART NO. PART NAME QTY. REMARKS1 016

PAGE 92 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)ENGINE MOUNTING ASSY. (SKID)

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 93ENGINE MOUNTING ASSY. (SKID)NO. PART NO. PART NAME QTY. REMARKS2 2101030

PAGE 94 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)ENGINE ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 95NO. PART NO. PART NAME QTY. REMARKS1 F2L20116728 DEUTZ F2L2011 ENGINE 1E

PAGE 96 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)OIL PRESSURE SWITCH ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 97OIL PRESSURE SWITCH ASSY.NO. PART NO. PART NAME QTY. REMARKS1 1182484 OI

PAGE 98 — MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09)TEMPERATURE TRANSMITTER ASSY.

MQ62TDD TRASH PUMP • OPERATION AND PARTS MANUAL — REV. #0 (07/30/09) — PAGE 99TEMPERATURE TRANSMITTER ASSY.NO. PART NO. PART NAME QTY. REMARKS1 011823