Using This Operator Manual

This manual is an important part of your tractor and it should be kept with the tractor at all times. Reading this manual will help you and others avoid personal injury or damage to the tractor. Information provided in this manual will help you to use the tractor in the safest and most effective way.

If you have an attachment, use the safety and operating information in the attachment operator's manual along with the tractor operator's manual to operate the attachment safely and correctly. The tractor shown in this manual may differ slightly from your tractor but will be similar enough to help you understand our instructions.

Throughout this manual, the use of terms left side, right side, front side and rear side must be understood to avoid confusion:

Identification — Serial Numbers & Plates

Always specify the tractor chassis and engine serial numbers when you need replacement parts. This will facilitate correct and faster delivery from the authorized servicing dealer.

Chassis Serial Number

The chassis number is punched on the right side of the front axle bracket of the tractor. Should you find the number difficult to read, you will also find it on the statutory plate.

Engine Serial Number

The engine serial number is stamped on the upper side of the fuel injection pump installation part, located on the right side of the cylinder block. For easy reference, the engine serial number is also mentioned on the valve cover of the engine (via a sticker).

Statutory Plate

The chassis number is also engraved on the statutory plate. The statutory plate is located on the left-hand side fender.

ROPS Certificate Plate

The ROPS certificate plate is riveted on the ROPS (Roll-Over Protection Structure). Information about the ROPS serial number and tractor model is engraved on the plate.

Universal Symbols

As a guide to the operation of your tractor, 23 universal symbols are used on the instruments and controls. Below is the complete legend — swipe through the cards or view the full reference page.

For the complete 23-symbol reference — including Hazard Warning Lights, Master Lighting Switch, Headlights, Horn, 4WD On/Off, Fast/Slow, Engine Coolant Temperature, PTO 540, Differential Lock, Hydraulic Control, Engine Speed Control, Remote Cylinder, and Engine Stop — see the original reference page below.

Limited Warranty for New Summit Tractors

General Provisions

The warranties described below are provided by IT USA ("Summit") to the original purchasers of new SUMMIT brand tractors ("Equipment") from any SUMMIT retailer store location. Under the warranties provided by SUMMIT, SUMMIT will repair or replace, at its option, any covered part which is found to be defective in material or workmanship during the applicable warranty term.

Warranty service must be performed at a service center authorized by SUMMIT to service the type of Equipment involved, which will use only new or re-manufactured parts or components furnished or sourced by SUMMIT. Warranty service will be performed without charge to the purchaser for parts and labor.

The purchaser will be responsible for any service call and/or transportation of any Equipment or Product to and from the service center's place of business, and for any service and/or maintenance not directly related to any defect covered under the warranties below. These warranties are transferable provided an authorized SUMMIT service center is notified of the ownership change, and SUMMIT approves the transfer in writing.

What is Warranted?

Subject to the Length of Warranty Chart provided in the "LIMITED WARRANTY FOR NEW SUMMIT TRACTORS" warranty statement (available at www.summittractors.com), all parts of any new SUMMIT Equipment — except tires, wheels, starter motor, battery and alternator (which are warranted under separate documents) — are warranted for the number of months or operating hours specified.

Summit Tractors Powertrain Warranty

Engine

Cylinder block, cylinder head, valve covers, oil pan, timing gear covers, flywheel housing, emission control components, and all parts contained therein.

Powertrain

Transmission, transmission case, differential and axle housing, MFWD front axle assembly, and all parts contained therein.

Exclusions

The Powertrain Warranty does not include external drivelines, or steering cylinders — including but not limited to the HST assembly (HST pump), HST damper plate, and HST damper assembly.

What is Not Warranted

SUMMIT is not responsible for the following:

1. Used equipment.
2. Any Equipment that has been altered or modified in ways not approved by SUMMIT, including but not limited to setting injection pump fuel delivery above SUMMIT or manufacturer specifications.
3. Depreciation or damage caused by normal wear and tear, lack of reasonable or proper maintenance, failure to follow operating instructions, misuse, lack of proper protection during storage, or accident.
4. Normal maintenance parts and service including but not limited to light bulbs, filters (oil, fuel, air and hydraulic), belts, motor brushes, brakes, fuses and switches, clutch linings, engine tune-up, wheel alignment, blade sharpening and lubrication.

Securing Warranty Service

Once registered, to secure warranty service the original purchaser (or a subsequent purchaser to whom the warranty has been properly transferred) must:

1. Report the product defect in writing to an authorized Summit Tractors service center and request repair within the applicable warranty period.
2. Present written evidence that the warranty registration has been completed and indicate the warranty start date.
3. Bring the Equipment to an authorized SUMMIT service center within five (5) business days and prior to the expiration of the applicable warranty period.

Emission System Warranty Statement

Summit warrants to the purchaser that at the time of initial sale, the engine used in the Summit brand tractor is designed, built and equipped to conform to all applicable regulations of the US Environmental Protection Agency (EPA), and that the engine is free of defects in materials and workmanship that may cause it to fail to conform with EPA regulations during its warranty period.

Emission Warranty Parts List

1. Air Induction System: Intake manifold.
2. Thermal Reactor System: Exhaust manifold.
3. Fuel Injection System: Fuel supply pump, injector, injection pipe, cold advance timer, fuel injection pump, any device used to collect particulate emissions, control device enclosures and manifolds.
4. Miscellaneous Items: Closed breather system; hoses*, clamps*, fittings*, tubing*; gaskets, seals; engine manufacturer-supplied wiring harnesses & electrical connectors; air cleaner element*; fuel filter element*; emission control information labels. (*Until the first scheduled replacement point.)

Emission Warranty Exclusions

• Non-performance of scheduled maintenance.
• Use of the engine/tractor in a manner for which it is not designed.
• Abuse, neglect, improper maintenance, or unapproved modifications/alterations.
• Accidents for which Summit has no responsibility or acts of God.
• Use of fuel not recommended by Summit.

Safety Sign Levels

The safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Any of the following symbols on your machine or in this manual alert you to the potential for personal injury. Follow recommended precautions and safe operating practices.

Safety Labels on the Tractor

Safety labels are placed at critical locations on your TX25H. Know each one and keep them legible — replace any that become worn or damaged.

General Safety (Caution Label — Left Fender)

1. Do not operate the machine without guards, shields, and safety devices in place.
2. Only use the drawbar for hitch-towed loads to avoid lifting front wheels.
3. Make certain children and others are clear of the machine before starting or operating.
4. Do not allow anyone except the operator to ride on the tractor.
5. Keep hands, feet, and clothing away from power-driven parts.
6. Use the seat belt. Extend it sufficiently from the retractor before adjusting to fit.
7. Reduce speed when turning or operating around hazards, on rough ground, or steep slopes.
8. Do not allow untrained persons to operate the machine.
9. Before dismounting or servicing: park on level ground; stop the engine; wait for all movements to stop; lower all implements; set the parking brake; remove the key.
10. Securely support tractor and implements before working underneath.
11. Abide by traffic regulations of the region when traveling public roads.
12. Start the engine only from a seated position with PTO disengaged and brakes engaged.

Prepare for Safe Operation

Protect yourself by wearing:

• A hard hat
• Safety glasses, goggles, or face shield
• Hearing protection
• Respirator or filter mask
• Inclement weather clothing
• Reflective clothing
• Heavy gloves
• Safety shoes

Safe Operation Notes

Before Operating

Read all safety instructions. Do not allow unauthorized modifications.

Driving

Watch for obstacles; avoid rollovers by driving at safe speeds; lock brake pedals together for road transport; keep in gear when going downhill.

Starting

Warn bystanders; use "three-point contact" when mounting; ensure ventilation; never operate in a closed building.

Riders

Do not allow riders on the tractor.

Tipping

Stay alert for holes/rocks; slow down for sharp turns; back out of ditches to avoid backward tips.

Overturning

If overturning, hold the steering wheel firmly and DO NOT attempt to leave the seat until the tractor has come to rest.

Parking

Lower all equipment, stop engine, and remove key.

Safety Starter Switch

Do not bypass the clutch-operated safety switch.

Safety While Operating Loader Attachments

• Only authorized and trained personnel over 18 years old.
• Check all functions before use.
• Check weight/nature of load and ground stability.
• Do not use on steep slopes.
• Do not lift or transport people or use as a working platform.
• Never transit or halt under suspended loads.

Safety From Lightning Strike

As soon as you hear thunder, shut off and put away equipment and move indoors. A sturdy building provides the best protection.

Noise & Vibration Levels

Tractor Controls

The TX25H features the following primary controls. Familiarize yourself with each before operating. Select a control card to jump to the matching operating section.

Interactive Dashboard

Click any indicator on the dashboard to learn what it means and what to do when it illuminates.

Indicator Details

Turn Indicators

Separate lamps for Left and Right turn signals.

High Beam Indicator

Glows when headlights are in high-beam mode.

Cold Start (Glow Plug) Indication

Glows when the ignition heater is active (second key position). Wait until the indicator turns off before cranking the engine.

Engine Oil Pressure Indicator

Temperature Gauge

Note: The dashboard photo above does not clearly show a dedicated temperature-gauge face, so this item is kept as a text-only reference instead of a dashboard hotspot.

Green zone is normal; Red zone indicates overheating. If it enters the red zone, idle the engine, then shut it off and check coolant levels and fan belt.

PTO Monitor Lamp

Turns ON when the PTO clutch is engaged.

Trailer Turn Indicator

Indicates the status of trailer turn signals via the 7-pin socket.

Engine RPM & Hour Meter

Shows engine speed in RPM and total hours worked. The hour reading depends on engine RPM.

Work Lamp Indicator

Glows when the rear work lamp is ON.

Fuel Gauge

Shows fuel level. If in the red zone, refill immediately.

Cruise On-Off Indicator

Glows when the cruise control system is active.

Dashboard Controls

Hazard Warning Light Switch

Blinks all four indicators for mechanical defects or emergency situations.

Combination Switch

Controls:

• Horn — press.
• Side Indicators — move lever Left/Right.
• Headlights / Parking lights — rotate clockwise through 3 positions: Parking → Low Beam → High Beam.

Ignition Switch

OFF

Disconnects electrical systems; key can be removed.

ON / HEATER

Functional position for warning lights and glow plug pre-heat.

START

Cranks the engine. Do not engage for more than 5–8 seconds at a time.

PTO ON-OFF Switch

Press for 3 seconds to engage the PTO; press again to stop.

Cruise Control Switch

Upper part activates; lower part deactivates.

Electrical Components

Fuse Box

Mounted on the radiator bracket.

Battery

Located at the front of the tractor on the front axle bracket, accessible by opening the hood.

Seven-Pin Socket

Mounted on the license plate for trailer connections.

Tractor Lights

1. Head Lights — projector lamps for better focus.
2. Tail Lights — include brake and turn signal indications.
3. Registration Plate Light — located at the rear.
4. Work Lamp — adjustable lamp at the rear.
5. Turn / Hazard Signal Lights — fitted on the ROPS.

Operator's Seat

The seat is part of the ROPS safety zone and features:

Weight Adjustment

Knob at the back · Range: 110.2 – 264.5 lbf.

Horizontal Adjustment

Lever (1) to slide forward/backward.

Vertical / Suspension Adjustment

Knobs (2) and (3) for height and suspension.

Armrest Inclination

Knob (5) to adjust angle.

Height Adjustment

Requires loosening bolt (A) and knobs (B1/B2) at the rear lower side.

Seat Belt

Must always be used when the ROPS is in the upright position.

Operator Presence Control (OPC)

This tractor is equipped with an audible and visible alarm that alerts the operator when leaving the driving position without the parking brake applied. The alarm activates when the operator is detected out of the driving position and the parking brake is not applied. The time-out of the alarm is 5–7 seconds. The alarm deactivates when the operator returns or the parking brake is applied.

Gears	Seat	Brake	Buzzer	Engine
Neutral	Empty	OFF	Continuous	Stops within 1 sec
Neutral	Empty	ON	—	No shut-off
Engaged	Empty	OFF	Continuous	Stops within 1 sec
Engaged	Empty	ON	—	Stops within 1 sec

Boarding & Leaving the Tractor

Boarding

Always board from the left-hand side where a footrest is provided. Be careful not to contact any levers.

Leaving

After stopping the tractor, leave from the left side.

Starting the Engine

The ignition switch has four positions:

OFF

Power cut off; key can be removed.

ON

Power supplied to electric circuits.

HEAT

Intermediate position to heat glow plugs for cold starts.

START

Cranks the engine.

Glow Plug Pre-heating Times

Normal Starting Procedure

1. Engage parking brake.
2. Gear shifter and Low/High selector in Neutral.
3. Press clutch pedal fully (safety switch).
4. Check PTO lever is in neutral.
5. Turn key to ON → HEAT → START.

Cold Weather Starting (Below 32°F / 0°C)

Use the "Heat" position for a few seconds before "Start." If it fails, wait 5–10 seconds and repeat.

Breaking In

• Do not subject the tractor to loads greater than normal working life.
• Engage low gears when towing heavy loads.
• Check all screws, nuts, and bolts regularly for tightness.
• Run in clutch discs correctly to ensure prolonged life.

Turning Off the Engine

1. Turn the engine accelerator to the idle position.
2. Stop the engine by turning the starting key to the "OFF" position.

Opening & Closing the Hood

Opening

Pull the knob at the front left side until it clicks. The gas spring will assist in lifting it to the preset height.

Closing

Gently lower the hood and press until the lock engages.

The under-hood muffler is fitted inside the hood for better aesthetics, vision, and sound muffling.

Speed Control Pedals (HST)

Pedal A

Forward direction.

Pedal B

Reverse direction.

Cruise Control (HST)

Engaging

Press forward pedal to desired speed, then push the cruise control switch.

Disengaging

Push the switch "OFF" or press the brake pedal.

2WD / 4WD Lever & Hi-Low Lever

2WD / 4WD

2WD

Pull lever (C) upward — for road operation.

4WD

Push lever (C) downward — for field operation.

Hi-Low Lever

Neutral

Middle notch.

High Range

Shift toward the back of the tractor.

Slow Range

Shift toward the front of the tractor.

Hand Throttle Lever

Push up to increase engine speed; pull down to decrease. Used for field applications.

Differential Lock

Press pedal (E) to rotate both wheels at the same speed.

PTO Operation

The PTO (Power Take-Off) drives rear-mounted and mid-mounted implements.

PTO On-Off Switch

Press for 3 seconds to engage; re-press to stop.

PTO Speeds

Hydraulics & Power Steering

Hydraulic Coupling Devices

Equipped with one double-acting (1DA) direction control valve (DCV) and Quick Release Couplers (QRCs) at the rear. Use the DCV lever to control attached implements.

Power Steering

Equipped with a 6.7 CC pump and 40 CC steering unit. Power steering function stops when the engine is shut off.

Transport Lock (Response Valve)

Located on the front end of the hydraulic rear cover. Fully tighten to close/lock the implement height during transportation for safety.

Service & Parking Brakes

Service Brake

Located on the left side.

Parking Brake

Located below the seat. Pull up to engage. To disengage, press sleeve (A) forward and push the lever down.

Wheels & Tires

Tire Inflation Pressure

Wheel Hardware Torque

Load-Carrying Capacity — Tire Combinations

Configuration	Front	Rear
Goodyear R14T	23×8.50-12 · 1,230 lbs	12-16.5 · 2,760 lbs
Standard Agricultural	6.00-12 · 881 lbs	8.3-20 · 1,543 lbs
Heavy Agricultural	7-14 · 1,510 lbs	8.3-24 · 2,061 lbs
Industrial / Turf	23×8.5-12	33×15.5-16.5

Three-Point Linkage

Used for mounting implements. Includes adjustable lift rods, top link, and lower links.

Roll-Over Protection Structure (ROPS)

Normal Operation

Always use in the upright position with a seat belt.

Folding the ROPS

Remove R-pin and pin (2), fold ROPS backward until it rests on the stopper, and reinstall pins. Refold upright as soon as clearance allows.

Maintenance Schedule

The schedule applies to normal conditions. Service more frequently in muddy or dusty environments. Beyond 1,500 hours, repeat the cycle every 250 hours.

Parameter	50h	250h	500h	750h	1000h	1250h	1500h
General (Wash, Grease, Fasteners)	W/G/CT	W/G/CT	W/G/CT	W/G/CT	W/G/CT	W/G/CT	W/G/CT
Engine Oil & Filter	R	R	R	R	R	R	R
Tappet Clearance	CA	CA	CA	CA	CA	CA	CA
Fuel Filter Element	R	R	R	R	R	R	R
Air Cleaner Element	CL	CL	CL	R	CL	CL	R
Radiator Coolant Level	CP	CP	CP	CP	CP	CP	CP
Coolant Change / Flush	—	—	—	—	R	—	—
Transmission Oil	R	R	R	R	R	R	R
Hydraulic Filters (Suction / Delivery)	R	R	R	R	R	R	R
Hydraulic Oil Strainer	CL	CL	CL	R	CL	CL	R
Front Axle Differential Oil	R	C	R	C	R	C	R
Brake Pedal Free Play	CA	CA	CA	CA	CA	CA	CA
Battery Electrolyte / Terminals	C/CL	C/CL	C/CL	C/CL	C/CL	C/CL	C/CL

Legend: C = Check · CA = Adjust · CL = Clean · CP = Fill · CT = Tighten · R = Replace · W = Wash · G = Grease

Parts & Diagrams

Fuel-system parts at your fingertips

Filter, tank, and pipe assemblies linked directly to the service content so owners can identify what they are looking at before ordering or calling a dealer.

Open parts browser

17110A-1-1 17130A-1-1 17140A-1-1 17150A-1-1 32110M-1-1

Fuel System

Fuel Tank Filling

Fill at the end of the day to prevent condensation. Do not smoke while refueling. Leave space for expansion.

Replacement of Fuel Filter

1. Shut petcock.
2. Rotate filter counter-clockwise to remove.
3. Apply engine oil to the new gasket.
4. Tighten until the gasket contacts the surface.

Air Bleeding of Fuel System

1. Switch ignition ON.
2. Loosen vent plug (A) on filter body until bubble-free.
3. Loosen vent plug (B) on FIP until bubble-free.
4. Tighten plugs.

Parts & Diagrams

Cooling-system diagrams

Use the radiator hose, sealing, and coolant assembly diagrams as a visual double-check before draining, flushing, or replacing hoses.

Open parts browser

02110A-1-1 02120A-1-1 03110A-1-1 31130M-1-1

Cooling System

Checking Coolant Level

Check at the radiator cap and the reserve tank.

Radiator Draining & Flushing

Every 1,000 hours or 2 years. Flush with water / cleaning solution for 15 minutes.

Radiator Fins Cleaning

Blow compressed air from the engine side outward.

Antifreeze Ratio (Glysantin G40)

Example: For -13°F to -37°F, use 50% antifreeze : 50% water.

Radiator Cap & Hose Inspection

Inspect radiator cap sealing and all coolant hoses at every service interval. Replace any cracked or bulging hose immediately.

Parts & Diagrams

Oil-service visual references

Quick access to oil filter, oil system, filler, and pan diagrams to help match the correct service point.

Open parts browser

30140M-1-1 30130M-1-1 30150M-1-1 28210M-1-1

Engine Oil

Checking Engine Oil Level

Use the dipstick on the right-hand side of the engine. Level must be between Min and Max marks.

Replacement of Oil Filter & Engine Oil

1. Drain old oil via the drain plug.
2. Remove and replace filter; apply fresh oil to the new filter gasket.
3. Refill via the filler cap with the specified quantity.
4. Start engine briefly, then recheck level.

Parts & Diagrams

Air-cleaner assembly diagram

Helpful when identifying the primary element, brackets, straps, hoses, and clamps around the intake system.

Open parts browser

03110A-1-1

Air Cleaner Maintenance

Clean every 250 hours under normal conditions; more frequently in dusty environments. Replace the element at 750-hour and 1,500-hour intervals.

Parts & Diagrams

Hydraulics, HST & PTO references

A curated set of drivetrain and hydraulic assemblies to support fluid and PTO-related maintenance.

Open parts browser

05110A-1-1 10110A-1-1 10120A-1-1 10130A-1-1 07170A-1-1

Transmission, Hydraulics & Axles

4WD Front Axle Oil

Check via the filling plug on the RHS. Oil should reach the lower point of the plug.

Transmission & Hydraulic Oil Change

Drain via the drain plugs under the housing. Refill via dipstick plug (1) at the rear.

Hydraulic Filter Replacement

Replace suction and delivery filters at the first 50 hours, then every 250 hours.

Cleaning of Suction Strainer

Clean at every service. Replace the magnetic strainer every 750 hours. Do not dismantle the magnets.

Parts & Diagrams

Brake & steering diagrams

Use these diagrams when checking pedal free play, steering-unit plumbing, or brake linkage locations.

Open parts browser

09110A-1-1 10150A-1-1 18110A-1-1 18130A-1-1 23110A-1-1

Brakes & Steering

Brake Pedal Free Play

Should be 0.98 to 1.18 inches (25–30 mm).

Steering Knuckle Joints

Check nuts after the first 50 hours and then every service.

Parts & Diagrams

Electrical & dash layouts

Useful visual references when troubleshooting fuses, battery-related components, or instrument-panel areas.

Open parts browser

16110A-1-1 17120A-1-1 26110A-1-1

Electrical System

Battery

12V, 65 Ah. Specific gravity: 1.265 ± 0.005 at 80.6°F. Use distilled water for topping up.

V-Belt

Deflection should be 0.39 to 0.47 inches (10–12 mm) when pushed with 22 lbf (98 N).

Fuses

Determine the cause of a blown fuse before replacing with an equivalent-rated fuse.

Starter Motor & Alternator

Check terminals and belt tension at every service. Replace brushes / bearings per dealer recommendation.

Interactive Greasing Map

Every service, grease the 5 points below. Click each marker on the illustration to jump to its location & procedure.

Oil & Lubrication Chart

Aggregate	Capacity	Recommended Grade
Engine Oil	1.11 US Gal (4.2 L)	15W40 API CJ-4 / CI-4
Transmission	6.604 US Gal (25 L)	ISO VG 32 or VG 56
Front Axle	0.71 US Gal (2.7 L)	API GL-5
Fuel Tank	6.87 US Gal (26 L)	Ultra-Low Sulfur Diesel
Coolant	1.14 US Gal (4.3 L)	40% Antifreeze : 60% Water

Long-Term Storage

• Clean the tractor thoroughly and fix any leaks.
• Top off fuel tank to prevent condensation.
• Change engine oil and filters if near service interval.
• Disconnect and remove the battery to a cool, dry location.
• Block wheels up slightly to take weight off tires, or rotate periodically.
• Cover with a breathable cover (never plastic).

Jacking Points

Front

Raise right/left end of axle or center. Use wooden wedges to prevent tilting.

Rear

Raise under the rear axle.

Complete technical reference for the Summit TX25H Hydrostatic Tractor. All dimensions & specifications are for guidance only and may be updated without prior notice.

Capacities

Engine

Specification	Value
Type	Diesel (Ultra-Low Sulfur)
Recommended Oil	15W40 · API CJ-4, CI-4 Plus, CI-4, or CH-4
Cold-Weather Oil	0W40 · CI-4 or higher (for -4°F to 14°F)
Oil Capacity	1.11 US Gal (4.2 L)
Cooling	Liquid cooled with Glysantin G40 antifreeze

Transmission

Specification	Value
Type	HST (Hydrostatic Transmission)
Oil Grade	ISO VG 32 / ISO VG 56
Capacity	6.604 US Gal (25 L)
Speed Control	Forward / Reverse Speed Control Pedals
Features	Cruise Control · Hi-Low Lever · 2WD/4WD Lever

Power Take-Off (PTO)

Specification	Value
Rear PTO Speed	540 RPM @ 2,451 engine RPM
Mid PTO Speed	2,100 RPM @ 2,438 engine RPM
Operation	Independent ON-OFF Switch (solenoid-operated)
Max Safe Speed	540 RPM (never exceed)

Hydraulics

Specification	Value
System Type	Live hydraulic system with Priority Valve
Steering Pump	6.7 CC
Steering Unit	40 CC
3-Point Linkage Lift Capacity	661.39 lb (300 kgf) at 24" from lower link ends
Control	Position Control Lever (Orange)
Quick Release Couplers	1 × Double-Acting (1DA) DCV

Electrical System

Specification	Value
Battery	12V, 65 Ah (Minimum 700 CCA for cold weather)
Specific Gravity	1.265 ± 0.005 at 80.6°F
Alternator	Belt-driven with V-belt
Starter Motor	Mounted on left side of engine
V-Belt Deflection	0.39 – 0.47 in (10–12 mm) @ 22 lbf (98 N)

Tires & Wheels

Specification	Value
Front Tire Pressure	20–22 P.S.I.
Rear Tire Pressure	14–16 P.S.I.
Front Rim Torque	53 lbf-ft (72 Nm)
Rear Rim Torque	103 lbf-ft (130 Nm)

Available Tire Combinations

Configuration	Front	Front Load	Rear	Rear Load
Goodyear R14T	23×8.50-12	1,230 lbs	12-16.5	2,760 lbs
Standard Agricultural	6.00-12	881 lbs	8.3-20	1,543 lbs
Heavy Agricultural	7-14	1,510 lbs	8.3-24	2,061 lbs
Industrial / Turf	23×8.5-12	—	33×15.5-16.5	—

Brakes

A short, disciplined list that will protect your investment, keep your warranty intact, and keep you safe.

✓ Do's

Service & Maintenance

• Follow the service schedule strictly — every interval, every time.
• Use the correct engine oil grade (15W40 CJ-4/CI-4) — keep it filled between Min/Max marks.
• Keep dated maintenance records. Warranty depends on them.

Belts & Hoses

• Maintain correct V-belt tension (deflection 0.39–0.47 in / 10–12 mm at 22 lbf).
• Replace belts at the first sign of glazing, cracking, or fraying.
• Inspect all hoses at every service; replace any cracked or bulging.

Tires & Wheels

• Maintain recommended tire pressure (Front 20–22 PSI · Rear 14–16 PSI).
• Check wheel hardware torque: Front 53 lbf-ft · Rear 103 lbf-ft.
• Inspect tire tread and sidewalls regularly.

Operation

• Always wear the seat belt when ROPS is upright.
• Engage the parking brake whenever the tractor is at a standstill.
• Use 4WD for field work, 2WD for road operation.
• Ensure all safety shields and the PTO master shield are in place.
• Clean the air cleaner element regularly (every 250 hours or as indicated).
• Board & dismount using three-point contact.
• Warm up the engine before applying load; cool down at idle before shutdown.

✗ Don'ts

Engine

• Do not keep the engine running if there's a malfunction — diagnose first.
• Do not suddenly change from forward to reverse in high range — the mechanism can be damaged.
• Do not remove the fuel cap or refuel while the engine is running.
• Do not engage the starter motor for more than 5–8 seconds at a time.

PTO & Hydraulics

• Do not press both speed control pedals when cruise control is engaged.
• Do not operate the PTO unless the master shield is in position.
• Do not approach a PTO-driven implement until it has completely stopped ("coasting down").
• Do not apply the differential lock above 3.73 mph (6 kmph) or while turning.
• Do not exceed 540 PTO RPM under any circumstances.

Safety & General

• Do not smoke while filling the fuel tank.
• Do not use the tractor without ROPS unless absolutely necessary — fold back up immediately after.
• Do not attach chains, ropes, or cables to the ROPS for pulling — always pull from the drawbar.
• Do not allow unauthorized or untrained persons to operate the tractor.
• Do not allow riders — only the operator in the seat.
• Do not tamper with the fuel system, injection pump settings, or battery terminals.
• Do not run the engine in a closed area without proper ventilation.
• Do not drive with the parking brake partially engaged.
• Do not work under the tractor supported only by a jack.

Common symptoms and solutions across Engine, Hydraulics, Brakes, and Electrical systems. When in doubt, contact your Summit dealer at 770-209-3390.

Engine Issues

Symptom	Potential Cause	Remedy
Engine not running smoothly	Fuel injector faulty	Replace fuel injector
	Pull-to-lever knob in pulling condition	Return to proper position
	Fuel filter restriction	Replace fuel filter
Excessive oil consumption	Oil level above maximum	Remove oil to lower the level
	Oil leakage	Check and repair
	Poor oil quality	Use genuine Summit-recommended oil
Oil pressure warning indicator on	Oil level low	Top up to correct level immediately — do not operate
Engine overheating	Clogged radiator / restriction	Clean fins or contact dealer
	Low coolant level	Top up to correct level
Excessive fuel consumption	Air cleaner clogged	Clean or replace element
	Low-quality fuel	Drain and refill with clean ULSD

Hydraulic Issues

Symptom	Potential Cause	Remedy
Excessive heating of hydraulic oil	Incorrect hydraulic pressure	Adjust relief valve to spec
	Oil level too high or too low	Check and maintain proper level
	Hydraulic strainer clogged	Clean or replace
Linkage goes down slowly	Mechanical linkage faulty	Contact authorized dealer
	Bush tight	Contact authorized dealer
	Response valve setting improper	Contact authorized dealer
Linkage does not lift fully	Improper lift arm setting	Contact authorized dealer
	Improper internal adjustment	Contact authorized dealer
3-Point Linkage not responding	Linkage not connected properly	Contact authorized dealer
	Heavy load on linkage	Reduce load / contact dealer
	Response valve set too low	Contact authorized dealer
Hydraulic system not working	Oil level low	Check and top up
	Hydraulic strainer clogged	Clean or replace
	Hydraulic pump not working	Contact authorized dealer

Brake Issues

Symptom	Potential Cause	Remedy
Noise in one side	Wrong adjustment of brake pedal	Check and adjust free play (25–30 mm)
Brakes work only when fully pressed	Wrong adjustment of brakes	Check and adjust — see maintenance schedule

Electrical Issues

Symptom	Potential Cause	Remedy
System not working	Fuse blown	Identify cause; replace with equivalent-rated fuse
Starter motor not working	Battery discharged or loose connections	Check battery state of charge; clean terminals
Battery not charging	Alternator or V-belt faulty	Check V-belt tension; test alternator output

Service Record

Keep this record up to date — it's your proof for warranty claims and a guide for your dealer.

Recommended service assemblies

These collections focus on the assemblies customers are most likely to need while following the operator manual: fuel, cooling, air intake, oil service, hydraulics, PTO, braking, steering, and electrical references.

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