Cub Cadet 73, 106, 107, 126, 127, 147 (1972–1985) Tractor & Rotary Mower Operator’s Manual Set (P/N 1 082 899 R2)

The operator’s manual explains tractor and mower operation, routine maintenance, and adjustments. The supplement adds cam-plate slot lubrication to the maintenance instructions for the hydrostatic models.

For hydrostatic creep, the troubleshooting chart points to a separate Service Manual. Internal engine and transmission overhaul require separate service literature.

PDF Search and Navigation

Text search and bookmarks — This image scan has no searchable text. Its two bookmarks open the added cover page and the original manual cover. Use the printed table of contents to find the operating and maintenance sections.

One printable English-language PDF contains 49 pages. The operator’s manual includes its front and back covers and memorandum page. The one-page supplement and one added cover page are included in the total.

Tractor Adjustments and Rotary Mower Setup

These selected topics show what the manual covers. It also explains seasonal tractor storage and the use of the hydrostatic release lever for moving the tractor a short distance by hand.

• Engine care: High-speed and idle carburetor adjustments, fuel strainer and sediment bowl cleaning, dry-type air cleaner service, and air-cooled engine maintenance.
• Clutch, brakes, and steering: Clutch free play, mechanical disc-brake adjustment and equalization, front wheel toe-in, and tie rod and drag link ball-joint adjustments.
• PTO and equipment controls: Front PTO clutch release adjustment and belt removal, rear PTO operation, optional creeper drive controls, and electric lift operation.
• Electrical maintenance: Spark plug checks, motor-generator belt replacement and tensioning, battery care, lighting fuse service, and voltage-regulator precautions.
• Lubrication: Model-specific lubrication guides, hydrostatic transmission oil-filter replacement, steering gear housing lubrication, and the cam-plate lubrication supplement.
• Rotary mowers: Deck leveling, cutting-height adjustment, drive-belt service, blade care, spindle-nut torque, and mower attachment and removal.

Written for tractor owners, the manual introduces the controls and explains routine care. Its illustrated clutch, brake, and belt adjustments suit owners comfortable with basic mechanical work.

Clutch, Brakes, Steering, and PTO

The brake sections distinguish the Model 73 transmission-shaft disc brake from the rear-wheel disc brakes on the other models. Illustrated pedal zones help you find the right adjustment reference before working on the brakes. Front-wheel drawings show the toe-in measurement and identify the tie rod and drag link ball joints.

The gear-drive models have instructions for the optional creeper drive and rear PTO. A dimensioned rear PTO spline drawing helps identify the shaft when checking attachment fit. The electric lift section covers fixed and float positions and illustrates the bracket modification for older blades and snow throwers.

Engine Maintenance and Troubleshooting

Carburetor illustrations distinguish the Model 73 layout from the other tractors. The troubleshooting tables address hard starting, irregular running or knocking, loss of power, and overheating. They also identify conditions referred to the dealer.

Cooling maintenance covers the air intake screen, shroud, and cylinder fins. The Kohler specification table lists bore, stroke, cold valve clearances, ignition settings, and separate governed-speed entries for idle and full load.

Motor-Generator and Electrical System

Motor-generator drawings show belt tension and mounting points. The replacement instructions account for the mower drive belt when a deck is fitted. The manual warns that prying against the motor-generator can damage its bearings and that bridging the regulator’s BAT and F terminals can damage the regulator.

The electrical reference includes AGC lighting-fuse and lamp specifications. Its illustrations show components and adjustments.

Lubrication Guides and Oil-Level Checks

The lubrication table separates API SE engine-oil recommendations from IH Hy-Tran transmission and creeper-drive fluids and gives capacities and service intervals. Three illustrated guides distinguish the Model 73, the other gear-drive tractors, and the hydrostatic tractors.

Oil-level illustrations identify the combined filler and gauge and the separate filler and side-mounted gauge. Both arrangements appear on Models 126 and 127, so the illustrations help you match the oil check to your tractor.

Rotary Mower Setup and Blade Care

The quick-attach mower instructions apply to tractors with serial number 65458 and higher. The 48-inch deck uses progressively higher spindle speeds from left to right. The leveling section covers side-to-side and front-to-rear adjustment, and the belt section distinguishes the adjustable main drive belt from the self-tensioning spindle belt.

Blade care covers balancing, replacement limits, and mounting orientation. The manual calls for stopping the engine and disengaging attachment power before repairs or adjustments. The brake sections describe how to support the tractor for the applicable adjustment.

Belt and Mower Specifications at a Glance

The tractor’s motor-generator belt specification allows a maximum deflection of 1/4 inch under 10 pounds of force applied midway between the pulleys.

The rotary mower lift linkage keeps the deck parallel through a cutting-height range of 1 to 4 inches. The blade-care section specifies 55–60 ft-lb for mower spindle nuts when they are reinstalled.