Bobcat 721 Skid Steer Loader – Specs, Parts & Serial Number Guide

Description:

The Bobcat 721 Skid Steer Loader is a heavy-duty, mid-size loader equipped with a powerful diesel engine and high-performance hydraulic system. Built in the late 1970s through the 1980s, the 721 was a rugged machine designed for serious digging, grading, and material handling. It remains a popular option for owners seeking dependable performance in a simple mechanical package.

Engine & Power:

• Engine: Deutz F2L511, 2-cylinder, air-cooled diesel

• Displacement: 124.6 cu in (2.0 L)

• Horsepower: 32 hp

• Fuel Tank Capacity: 10.5 gallons

• Air-cooled design offers reliability in dusty conditions

Transmission:

• Chain-driven mechanical transmission

• Manual clutch with dual-lever steering control

• 4-wheel drive via chain and sprocket system

• No hydrostatic components – fully mechanical system

Hydraulic System:

• Pump Flow: 11 GPM

• System Pressure: ~2,000 psi

• Dual lift and tilt cylinders

• No standard auxiliary hydraulics

Dimensions & Performance:

• Operating Weight: ~4,800 lbs

• Rated Operating Capacity: 1,300 lbs

• Tipping Load: 2,600 lbs

• Width: 55.1 in

• Height: 76.3 in

• Wheelbase: 36 in

• Ground Clearance: 6.8 in

• Max Speed: 6.5 mph

Maintenance Essentials:

• Deutz engine parts – Shop Deutz Engine Kits

• Hydraulic cylinder rebuild kits – Find Bobcat Seal Kits

• Drive chains and sprockets – Browse Bobcat Drive Chain Parts

• Filters and clutch components for regular upkeep

Common Issues & Fixes:

• Hard starting or smoking: Usually glow plug or injector related – fix with a Deutz tune-up kit

• Hydraulic fluid leaks or weak lift: Replace worn seals with hydraulic kits

• Drive chain slop or jerking: Caused by stretched chains or worn sprockets – replace worn drive components

Serial Number Info:

• Typically located under the seat plate or on the side frame near the operator station

• Serial numbers generally start with 509XXXX or 510XXXX