Page 3 - TABLE OF CONTENTS
I-TRIM ® 3 TABLE OF CONTENTS Table of contents ...................................................... 3 Introduction ............................................................... 4 Safe Operating Practices ...................................... 4-6 Decal (Transfer) Identification ....................
Page 4 - INTRODUCTION; SAFETY; Safe Operating Practices; Training; Preparation
4 INTRODUCTION Read this manual carefully to learn how to operate andmaintain your product properly. The information in thismanual can help you and others avoid injury and productdamage. The operator is responsible for operating thisproduct properly and safely. This manual identifies potential hazar...
Page 6 - Other Riding Mower Safety Instructions; IMPORTANT
6 WARNING – California, USA residents are required by law (CA PRC 4442 & CA H & SC 13005) to equip their engines with spark arresters when operating in flammable vegitation. Arresters must be obtained from yourengine dealer and are not available from National Mower Company. • Be careful duri...
Page 7 - DECAL IDENTIFICATION
I-TRIM ® 7 DECAL IDENTIFICATION National has provided decals in many locations throughoutthe machine to aid the operator in identifying, controllingand operating the I-Trim safely and correctly. It is importantthat all decals are clean and visable at all times. Replacedecals that are damaged, missin...
Page 9 - NAMES AND LOCATIONS
I-TRIM ® 9 Item Part No. Description / Location A 07792 I-Trim Model / Left and Right sides of operator panels B 07794 Natinal Logo / Top of rear hood C 07793 National Name / Front of steering column D 07797 Diesel Fuel / Top of Fuel Tank E 07796 Hydraulic Fluid / Top of hydraulic tank F 07778 Warni...
Page 11 - —SPECIFICATIONS; —CUTTING UNIT SPECIFICATIONS
I-TRIM ® 11 1.1—ENGINE SPECIFICATIONS TYPE: 3 cylinder turbocharged Diesel ENGINE MODEL: Briggs & Stratton954 DT HORSEPOWER: 34 hp COOLING: Water cooled 1.2—TRANSMISSION TRACTION DRIVE: Oilgear variable DisplacementHydrostatic pump WHEEL DRIVE Char Lynn hydraulic motors MOTORS: with disc-parking...
Page 12 - FIGURE B; —ASSEMBLY INSTRUCTIONS; —REAR DECK ASSEMBLY
12 FIGURE B 2—ASSEMBLY INSTRUCTIONS 2.1—TRACTOR ASSEMBLY Handle banding material with caution. Use heavyleather gloves. Banding is sharp! The side and rear lift arms are spring-loaded up.Take care when handeling. 1. Remove crating top, front and sides from the tractor crate. Cut banding from Roll-Ov...
Page 13 - —DECK MOTORS AND BLADES; FIGURE C; NOTE; FIGURE E
I-TRIM ® 13 2.4—DECK MOTORS AND BLADES The I-Trim is available with standard or mulch-ing blades. The Rear/Right decks require a RHblade and the left deck uses a LH blade. MULCHING BLADESRear/Right -P/N 306245 (stamped 306245)Left -P/N 306311 (stamped 306311) STRAIGHT BLADESRear/Right - P/N 306368 (...
Page 14 - FIGURE F; —SCREENBOX FOR RADIATOR; FIGURE H
14 1. Remove rear RH wheel to replace battery. Install battery with side mount terminals facing towardengine. See Fig F. 2. Place battery hold down strap over bolts and secure with flat washers and hex nuts. Do not over-tighten. 3. Connect the red ignition wire to the positive (+) terminal of the ba...
Page 15 - —GENERAL INFORMATION
I-TRIM ® 15 3.2—TRACTION DRIVE TRAIN Power from the engine is transmitted by direct drive to thevariable displacement pump. The pump supplies hydraulicfluid to the hydraulic motors. 3.3—MOWER DECK DRIVE Hydraulic power to the deck motors is actuated by electricswitch mounted on the RH control panel....
Page 16 - —CONTROLS; FIGURE J
16 Battery Charging Oil Pressure LOW Water Temperature Water in Fuel Glow Plug ON 4.3—HOUR METER The hour meter (2,Fig. J) indicates the number of hours thetractor has been operated. It can be used to keep track ofmaintenance intervals and the amount of time required toperform various tasks. The hou...
Page 17 - —DECK DRIVE CONTROL; —SEAT POSITION LEVER
I-TRIM ® 17 4.4—THROTTLE LEVER Push throttle lever (4, Fig. J) forward to increase enginespeed, pull back to decrease the engine speed. Position throttle at full throttle or slightly less for optimumpower and deck speed during mowing. 4.5—TRACTION PEDAL The traction pedal (5, Fig. J) operates the fo...
Page 18 - —OPERATION; OPERATING SUGGESTIONS; — STARTING THE ENGINE
18 5—OPERATION 5.1—CHECK LIST 1. Fill the fuel tank with good quality, clean, diesel with a minimum of 40 octane. Fresh fuel prevents gum fromforming in the fuel system. Fill tank to 1 inch (25 mm)below filler neck. Do not overfill. 2. Check oil in the engine crankcase. It should be filled to the fu...
Page 19 - —HILLSIDE OPERATION
I-TRIM ® 19 5.4—MOWING OPERATION 1. Check the turf area for debris that would cause damage to the decks. Never operate the decks when theyare in the UP position because of the danagers of flyingobjects and exposed blades. 2. When cutting large areas, the most satisfactory method is to first cut the ...
Page 20 - —PARKING BRAKE ADJUSTMENT; —ADJUSTMENTS; FIGURE M
20 6.2—PARKING BRAKE ADJUSTMENT The parking brake should be set so that it holds the tractorsecurely. The parking brake must be released before thetraction pedal is engaged. 1. Adjust the brake by loosening set screw in the brake knob and turning knob clockwise to tighten, or counterclockwiseto loos...
Page 21 - FIGURE O
I-TRIM ® 21 6.4—REAR MOWER LIFT The rear mower lift height has been preset at the factory andnormally will not need to be adjusted. The I-Trim may be fitted with a needle valve on the rear lift cylinder.Turning the needle valve CW will slow the lift andlowering speed of the rear deck. Always lock th...
Page 22 - —MAINTENANCE; —GENERAL MAINTENANCE
22 3. When the battery is being installed or removed make sure that the positive and negative terminals do notcome in contact with metal tractor parts at the same timeor severe damage may result. 4. Battery connections must be kept clean and tight at all times. Loose cables will cause eventual batte...
Page 25 - THIS PAGE IS BLANK
Page 26 - FIGURE U
26 1 Daily Dipstick / left side of Engine Check level 1 2 Daily Radiator Reservoir Bottle Check level 1 3 Daily Hydraulic Tank Check level 1 4 Daily Fuel Tank Check level 1 5 Daily* Pre-Air Filter Inspect/Clean 1 6 Daily* Screenbox, Radiator Fins/ Rear Inspect/Clean 1 7 Weekly Height Adjustment Shaf...
Page 28 - —STORAGE; —GENERAL INSTRUCTIONS; —STARTING THE ENGINE AFTER
28 8—STORAGE 8.1—GENERAL INSTRUCTIONS When you do not plan to use your vehicle for some time, itshould be stored in a dry and protected place. Unnecessaryexposure to the elements may deteriorate its appearance andshorten the usual service life. 8.2—ENGINE 1. Drain the fuel from the fuel tank. 2. Whi...
Page 29 - —TROUBLE SHOOTING; ENGINE WILL NOT START; TRACTOR WILL NOT MOVE; DECKS WILL NOT TURN; DISCONNECT HOUR METER BEFORE
I-TRIM ® 29 9—TROUBLE SHOOTING ENGINE WILL NOT START The operator must be seated. Check position of controll switch (on dash).Switch must be in the OFF position. Check to see that the traction pedal is in neutral.(neutral is in the center position). Check all safety switches for conductivity. SeeEle...
Page 30 - PROBLEM: STARTER WON’T CRANK; If test light doesn’t come on:
30 9. SAFETY INTERLOCK BOARD (SIB): The ITrim is equipped with an integratedcircuit board designated as the SafetyInterlock Board (SIB). The SIB controls thevehicle starter cranking, engine run anddeck run circuits and the indicator lights. The starter motor won’t crank unless thefollowing condition...
Page 33 - ITRIM; FIGURE 1
I-TRIM ® 33 - - - + + + + 9 5 7 3 1 8 10 JI 6 4 2 4 J3 J2 J4 RELAY SEAT GRO UND CAP A CITO R RELAY PEDAL RELAY BLADE RELAY RUN RELAY BUZZER 3 LI GHT (4 ) INDICAT O R RELAY 2 1 7 5 3 1 8 6 4 5 3 1 6 1 2 3 4 J3 J2 J4 4 3 2 1 5 6 6 5 1 2 3 4 7 8 TEMP BATT WATER FI LT FU EL PL UG GLO W PR ES S J1 OIL 4 ...
Page 38 - FIGURE 2
Page 39 - FIGURE 2—DECK LIFT ARMS AND PULL ARMS
I-TRIM ® 39 FIGURE 2—DECK LIFT ARMS AND PULL ARMS IT E M N O . Q TY. P ART NO. D ESCRIPTION 1 2 07719 BUSHING - 1X1.5X2, BOSTON #B1624-16 2 5 02511 THRUST WASHER 3 1 02263 HEX NUT 3/8-24 NYLOCK 4 3 02403 FLAT WASHER - 3/8 SAE 5 1 07709 LIFT CYL - WING DECK 6 10 204447 BUSHING - PULL ARM 7 1 02036 HE...
Page 40 - FIGURE 3
Page 42 - FIGURE 4
Page 43 - FIGURE 4—WHEEL MOTORS, FILTERS, HYD COMPONENTS
I-TRIM ® 43 FIGURE 4—WHEEL MOTORS, FILTERS, HYD COMPONENTS IT E M N O . Q TY. P ART NO. D ESCRIPTION 1 1 07688 STEERING FILTER 2 1 07690 STEERING VALVE 3 1 07689 FILTER ELEMENT 4 1 306357 BRKT - LIFT VALVE, LH 5 1 07692 LIFT VALVE, 6 1 306356 BRKT - LIFT VALVE 7 1 305034 FILTER CANISTER, HYDRAULIC 8...
Page 44 - FIGURE 5
Page 45 - FIGURE 5—PEDAL ASSY, HYD PUMPS
Page 49 - FIGURE 8—REAR MOWER DECK ASSEMBLY
I-TRIM ® 49 32 3 15 27 7 8 2 2 8 27 6 26 25 10 11 24 16 17 18 12 22 21 20 19 23 25 5 9 4 1 13 28 29 30 31 32 33 32 31 33 ITEM NO. QTY. PART NO. DESCRIPTION 1 1 306171 WELDMENT - DECK PLATFORM RR 2 2 306064 WELDMENT - FRONT ROLLER AXEL 3 1 306074 WELDMENT - BLADE HOLDER 4 2 306067 WELDMENT - REAR ROL...
Page 51 - FIGURE 10—LEFT HAND MOWER ASSEMBLY
I-TRIM ® 51 28 7 11 30 9 18 3 5 6 22 26 23 24 12 13 25 19 20 21 2 24 23 22 26 28 30 8 10 4 27 28 29 14 34 1 15 16 32 31 36 35 33 34 35 35 36 FIGURE 10—LEFT HAND MOWER ASSEMBLY * ITEM NO. QTY. PART NO. DESCRIPTION 1 1 306107 WELDMENT - L DECK PLATFORM 2 1 306108 WELDMENT - CASTER PIVOT MOUNT 3 1 3060...
Page 53 - FIGURE 11—HYDRAULIC DECKS AND OIL COOLER
I-TRIM ® 53 FIGURE 11—HYDRAULIC DECKS AND OIL COOLER ITEM NO. QTY. PART NO. DESCRIPTION 1 1 306195 WELDMENT - HYDRAULIC RESERVOIR 2 2 305737 DECK MOTOR - R, REAR DECKS, CCW 3 1 305736 DECK MOTOR - L DECK CW 4 1 305037 BASE - HYDRAULIC FILTER 5 1 07691 DECK VALVE MANIFOLD ASSY 6 1 07692 LIFT VALVE, 7...
Page 55 - FIGURE 12—HYDRAULIC WHEEL MOTORS, STEERING
I-TRIM ® 55 FIGURE 12—HYDRAULIC WHEEL MOTORS, STEERING
Page 56 - FIGURE 13—ELECTRICAL SYSTEM COMPONENTS
56 Item Part No. Description Qty. 1 07063 HOURMETER 1 2 07697 LED LIGHTS ON INSTRUMENT 5 3 07065 KEYSWITCH 1 4 07496 SWITCH, DECK MOTOR 1 5 07695 RELAY, STARTER SOLENOID 1 6 07700 CIRCUIT BREAKER 1 7 B&S 820373 TIME DELAY MODULE-GLOWPLUG PREHEAT 1 8 07695 RELAY, GLOW PLUG 1 9 07716 SAFETY INTERL...
Page 61 - NATIONAL MOWER COMPANY; TWO YEAR LIMITED WARRANTY; NATIONAL
I-TRIM ® 61 NATIONAL MOWER COMPANY TWO YEAR LIMITED WARRANTY FOR I-TRIM MOWERS For the period of two years from the date of purchase, or 1,500 hours, whichever occurs first(45 days if the product is used for rental purposes), National Mower Company will repair orreplace free of charge, for the origi...