1983-1999 Bolens QS-16 / QT-16 / QT-17 / 1900 Series Service Manual
Troubleshooting and parts diagrams for Bolens QS-16, QT-16, QT-17 & 1900 Series tractors — complete service procedures, maintenance schedules, and field-replaceable units specifications for all model years.
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Sample pages from the 1983-1999 Bolens QS-16 / QT-16 / QT-17 / 1900 Series Service Manual manual
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Bolens Models Covered & Key Technical Specifications
Models: Bolens QS-16, QT-16, QT-17, 1900 Series Sub-models / Variants: 1660, 1666, 1966 Build Years: 1983–1999 Serial Numbers: 1660 S/N 0100101 and later, 1666 S/N 0100101 and later, 1966 S/N 0100101 and later Technical Data:
- Engine displacement: 587 cc (Model 1660), 660 cc (Onan), 690 cc (Model 1666), 770 cc (Model 1966)
- Engine power: 16 hp to 19 hp at 3600 rpm
- Engine type: Air-cooled 2-cylinder or 1-cylinder, 4-cycle
- Drive system: Hydrostatic transmission (Eaton or Sundstrand)
- Transmission capacity: 10 quarts (9.5 liters)
- Fuel capacity: 15 liters (3.96 US gallons)
- Fuel type: Gasoline
- Brake system: Disc type
Bolens Manual Features & Content Preview
Bolens QS-16, QT-16, QT-17 and 1900 Series Service Manual Scope
- Covers 1983–1999 Bolens QS-16, QT-16, QT-17, and 1900 Series tractors, including 1660, 1666, and 1966 model variants.
- Official Bolens publication Form 552974-2 (4/83), superseding earlier edition 552974-1.
- Contains 56 detailed exploded-view diagrams and 15 electrical wiring schematics.
- Stored against your account so you can retrieve it after a hard-drive loss.
- Page spreads stay legible when printed at original size.
- Full-text search finds any part number in seconds.
- This 1983 second edition serves as the base technical reference for the entire QS, QT, and 1900 tractor line lifespan.
Tractor Systems and Maintenance Documentation
The 1983–1999 Bolens QS-16, QT-16, QT-17 service manual provides extensive technical data for the maintenance and mechanical restoration of these classic utility tractors. Organized into eight primary groups, this document covers electrical systems, hydrostatic drive trains, chassis configurations, fuel systems, engines, and attachment gear cases. Topics include troubleshooting for starter circuits, charge pump inspection, transaxle assembly adjustments, hydrostatic transmission principle of operation, and power take-off (P.T.O.) brake maintenance. Detailed maintenance charts ensure periodic service intervals are followed for cooling screens, spark plugs, breather elements, and hydraulic systems.
Specification and Reference Data
Technical data previews include torque values for transaxle carrier assembly bolts at 25–30 ft. lbs. (34–40 N.m). The Bolens QS-16, QT-16, QT-17 hydrostatic transmission capacity is documented at 10 quarts. Electrical system reference values for the 1666 and 1966 models list a 12 VDC clutch voltage with a 4.7 amp current draw. This manual also details how factory workshop documentation is structured, providing clear specifications for valve clearance at 0.15 mm (0.006 in) and spark plug gaps of 0.25 mm (0.010 in). Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions.
This official 93-page Bolens service manual covers the 1983–1999 QS, QT, and 1900 Series tractors, providing all necessary technical data for engine, chassis, hydraulic, and drivetrain maintenance for authorized owners.
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