Bobcat 773 Specifications & Workshop Service Guide
The Bobcat 773 is a skid steer loader produced during 1995-2002, powered by a 56-horsepower Kubota V2203-T Turbo Diesel diesel engine. It features an operating weight of 5,808 lbs (2,634 kg), a rated operating capacity of 1,750 lbs (794 kg, SAE J818), and an auxiliary hydraulic flow of 16.7 GPM at 2500 PSI (24.4 HHP).
Engine & Powertrain
- Engine Model
- Kubota V2203-T Turbo Diesel
- Gross Output
- 56 HP
- Crankcase Oil
- 10.0 qts (15W-40 CK-4)
- Cooling System
- 12.5 qts (50/50 Ethylene Glycol)
Hydraulic Circuit & Flow
- Auxiliary Flow
- 16.7 GPM (Standard Flow)
- Relief Pressure
- 2500 PSI
- Hydraulic HP
- 24.4 HHP (GPM × PSI / 1714)
- Reservoir Capacity
- 9.0 US Gal (Bobcat Hydraulic/Hydrostatic Fluid)
- Total System Vol
- 12.5 US Gal (Includes cylinders)
- Drive Chain Case
- 8.0 US Gal (SAE 10W-30 Motor Oil)
Wix / Donaldson OEM Filter Cross-Reference
Standard fluid and filter change requires exactly 9.0 US gallons to reach the center of the sight glass. Never overfill.
Hydraulic cylinders and lines hold approximately 3.5 US gallons. Total system capacity for dry rebuilds is 12.5 US gallons.
The chain case holds 8.0 US gallons of SAE 10W-30 Motor Oil. It is completely isolated from the hydraulic circuit.
Bobcat 773 Technical Service Overview
Field service operations on the Bobcat 773 require adherence to manufacturer hydraulic pressure relief tolerances (2500 PSI) and torque specifications. When performing standard 250-hour preventative maintenance, always verify hydraulic filter condition, check drive chain tension, and inspect high-pressure auxiliary couplers for mechanical wear or weeping seals.
Empirical Engineering & Statutory Verification Matrix
All tolerances and fluid formulas cross-checked against primary heavy machinery standards.
| Engineering Parameter | Authoritative Source | Authority Body | Factory Tolerance / Rule |
|---|---|---|---|
| Bobcat 773 Rated Operating Capacity | SAE J818 Technical Specification Standard ↗ | 1,750 lbs (794 kg) | |
| Factory Service Manual Publication | Bobcat 773 Service Manual Pub #6900092 (G-Series Hydrostatic Drive) | Verified Factory Documentation | |
| Hydraulic Reservoir Service Capacity | Bobcat 773 Lubrication Specification Table | 9.0 US Gallons (Bobcat Hydraulic/Hydrostatic Fluid) | |
| Kubota V2203-T Turbo Diesel Engine Output | Engine Manufacturer Service & Workshop Data | 56 Gross HP (10.0 qts 15W-40 CK-4) |
Frequently Asked Technical Questions
Authoritative mechanical and operational answers verified against OEM shop manuals.
What is the rated operating capacity (ROC) of the Bobcat 773?
Under SAE J818 standards (50% of tipping load for wheeled loaders or 35% for tracked loaders), the Bobcat 773 has a Rated Operating Capacity of 1,750 lbs (794 kg). The static tipping load is 3,500 lbs (1,588 kg). Always operate within rated parameters to prevent rollover hazards.
What hydraulic fluid and reservoir capacity does the Bobcat 773 use?
The Bobcat 773 hydraulic reservoir requires 9.0 US gallons (34.1 Liters) of Bobcat Hydraulic/Hydrostatic Fluid. The complete system capacity with cylinders and coolers holds 12.5 US gallons.
What engine powers the Bobcat 773 and what are the service intervals?
The Bobcat 773 is powered by a Kubota V2203-T Turbo Diesel diesel producing 56 gross horsepower. The crankcase requires 10.0 quarts (9.5 Liters) of 15W-40 CK-4. Oil changes are recommended every 100 to 250 operating hours based on duty cycle.
Where is the serial number located on the Bobcat 773?
Right side upright cab post inside rear engine compartment.
What Wix filters fit the Bobcat 773?
Primary cross-references for the Bobcat 773 are: Engine Oil: Wix 51307 / Donaldson P550162; Hydraulic: Wix 51567 / Donaldson P550388; Fuel: Wix 33397 / Donaldson P550385; Outer Air: Wix 46449 / Donaldson P822768. Always verify thread pitch and seal diameter prior to spin-on installation.