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Bolens HT-20 User Manual

Bolens HT-20
31 pages
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TABLE
OF
CONTENTS
Page
General
Safety Precautions
3
Serial
Number
5
Specifications
5
Controls
6
Pre-Operational Checks
7
Break-In
Period
8
Starting
the Engine
9
Operation
10
Preventive Maintenance
13
Adjustments
18
Front
Wheels
22
Power
Take-Off (P.T.O.)
23
Wheel
Weight
Kit
23
Lubrication Chart
24
Lubrication
25
Maintenance Chart
26
Minor Trouble Shooting Guide
27
Hydraulic Circuit Diagram
27
Wiring
Diagram
28
Optional Equipment
29
Storing Your Bolens Tractor
30
FMC CORPORATION®
PORT
WASHINGTON,
WISCONSIN U.S.A.
FORM
NO. 552667
Printed
in U.S.A.
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Bolens HT-20 Specifications

General IconGeneral
BrandBolens
ModelHT-20
CategoryTractor
LanguageEnglish

Summary

TO THE OWNER

GENERAL SAFETY PRECAUTIONS

AVOID ACCIDENTS BE A SAFE OPERATOR

Emphasizes operator responsibility in preventing accidents and promoting safe operation.

SERIAL NUMBER

SPECIFICATIONS

CONTROLS LOCATION AND FUNCTION

CHOKE

Provides a richer fuel mixture for easy engine starting.

AMMETER

Indicates the rate of charge or discharge from the battery.

LIGHT SWITCH

Controls the tractor's lighting system, with off and on positions.

IGNITION-STARTER SWITCH

Starts the engine by turning the key; also has off and run positions.

THROTTLE

Controls the engine speed, allowing adjustment from idle to full throttle.

FOOT BRAKE

Used to apply brakes when the vehicle is moving or free-wheeling.

TRAVEL PEDAL

Controls forward and reverse motion; also used for dynamic braking.

FOOT REST

Provides a place for the operator's foot when not operating controls.

HYDRAULIC LIFT LEVER

Raises and lowers attachments; can be locked in FLOAT position.

HYDRAULIC CONTROL LEVER

Regulates auxiliary control cylinders on attachments connected to hydraulic ports.

ATTACHMENT DRIVE LEVER

Engages and disengages power to attachments like the PTO.

PARKING LOCK

Secures the tractor in place by locking the foot brake pedal.

HYDROSTATIC OIL TEMPERATURE LIGHT

Indicates when the hydrostatic transmission and hydraulic system are overheated.

OPTIONAL HOUR METER

Tracks operating hours; available as an option through the dealer.

OIL PRESSURE LIGHT

Indicates when engine oil pressure is low.

PRE-OPERATIONAL CHECKS

Engine Oil Level Check

Ensure engine oil is within the proper operating range using the dipstick.

Fuel Supply Check

Verify sufficient gasoline supply, using fresh, clean regular or low lead gasoline.

Battery Inspection

Inspect battery for proper electrolyte level, clean cables, and clean terminals.

Air Cleaner Element Check

Ensure air cleaner element is free of debris and clean it regularly.

Flywheel Screen Cleaning

Clean the flywheel screen regularly for proper engine cooling.

Loose Parts and Damage Check

Visually check for loose or missing nuts, screws, and damaged parts.

Tire Inflation Check

Ensure front and rear tires are inflated evenly, between 8 and 12 lbs.

Transmission Fluid Level Check

Check hydrostatic transmission fluid level with the transmission cold.

BREAK-IN PERIOD

STARTING THE ENGINE

Normal Starting Procedure

Step-by-step guide for starting the engine under normal conditions.

Emergency Starting Procedure

Instructions for starting the engine using jumper cables during electrical failure.

OPERATION

Foot and Parking Brake Operation

How to apply brakes and engage the parking lock for safe stopping and parking.

Hydrostatic Transmission Operation

Details on using the travel pedal for speed control, forward/reverse, and dynamic braking.

Hydraulic Lift Valve Operation

Operation of the hydraulic lift lever for raising/lowering attachments and float position.

Auxiliary Valve and Connections

Use of the auxiliary valve and ensuring hydraulic connections are clean and approved.

Indicator Lights and Attachment Drive

Understanding indicator lights and operating the attachment drive lever for PTO engagement.

PREVENTIVE MAINTENANCE

Lubrication Points and Schedule

Guide to lubrication requirements for various tractor components based on operation length.

Engine Oil and Filter Maintenance

Procedures for checking engine oil level, oil filter replacement, and using genuine parts.

Air Cleaner Service

Instructions for cleaning and maintaining the air cleaner element for engine longevity.

Air Screen Cleaning

Regular cleaning of the flywheel air screen to prevent engine overheating.

Spark Plug Service

Procedures for checking, cleaning, and replacing spark plugs for optimal engine performance.

Breaker Points and Timing

Maintenance for breaker points and timing adjustments, noting dealer service for timing.

Cylinder Head and Valve Service

Recommendations for cylinder head carbon removal and valve service by an authorized dealer.

Fuel Tank and Filter Maintenance

Procedures for checking fuel tank, fuel valve, and cleaning the fuel filter.

Battery Care and Maintenance

Guidelines for cleaning battery terminals, checking electrolyte, and maintaining charge.

Alternator System Checks

Precautions and checks for the alternator system to avoid damage during operation or servicing.

Hydrostatic Transmission Maintenance

Procedures for cleaning the hydrostatic transmission area and consulting dealer for maintenance.

Front Wheel Bearing Service

Step-by-step instructions for servicing front wheel bearings.

Pneumatic Tire Care

Maintaining correct tire inflation for front and rear tires to prevent damage.

ADJUSTMENTS

Carburetor Adjustment

Procedures for adjusting the carburetor's main and idle fuel screws for optimal performance.

Front Wheel Alignment

Steps to measure and adjust toe-in for proper front wheel alignment.

Turning Radius Adjustment

Adjusting screws to modify turning radius, ensuring left and right are approximately equal.

Front Axle Stop Adjustment

Adjusting front axle stops to maintain proper clearance and prevent interference.

Power Take-Off (PTO) Lever Adjustment

Adjusting the PTO control rod for proper tension and belt guide clearance.

PTO Belt Installation

Guide for replacing PTO belts, including proper belt guide adjustment.

Disc Brake Adjustment

Adjusting brake pads for correct clearance (0 to .010 inch) on both wheels equally.

Seat Adjustment

Instructions for tilting and positioning the tractor seat for operator comfort.

Travel Pedal Angle Adjustment

Adjusting the travel pedal angle for operator comfort and ergonomics.

Foot Brake Interlock Switch Check

Checking the adjustment of the foot brake interlock switch for safety.

Hydrostatic Neutral Adjustment

Adjusting the hydrostatic neutral position if the tractor creeps when idle.

Rear Wheel Reversal

Information on reversing rear wheels to change the tractor's overall width.

Front Wheel Description

Details about the demountable front wheels and optional wheel spacer use.

Power Take-Off (PTO) System

Explanation of the PTO drive shaft and its connection to attachments.

Front Wheel Weight Kit Installation

Instructions for installing the front wheel weight kit on regular and high flotation wheels.

LUBRICATION CHART

MAINTENANCE CHART

MINOR TROUBLESHOOTING GUIDE

HYDRAULIC CIRCUIT DIAGRAM

WIRING DIAGRAM

OPTIONAL EQUIPMENT

STORING YOUR BOLENS TRACTOR

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