The Bobcat 641 Skid Steer Loader is a mid-sized, gasoline-powered loader from the 1980s, known for its reliable performance and user-friendly design. Equipped with the durable Wisconsin VH4D engine and a chain-driven mechanical transmission, the 641 offers solid lifting power and straightforward serviceability. This loader is well-suited for farms, construction, and light industrial use, where maneuverability and dependable operation are key.
Specifications & Features:
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Engine: Wisconsin VH4D, 4-cylinder air-cooled gasoline
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Engine Power: 30 hp @ 3,200 RPM
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Hydraulic Pressure: 2,000 psi
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Pump Flow: 11 GPM
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Rated Operating Capacity: 1,300 lbs
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Operating Weight: 4,480 lbs
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Lift Type: Radial lift
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Transmission: Chain drive, manual lever-operated
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Travel Speed: 6.4 mph
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Tires: 7.00x15 or 10x16.5 (optional upgrade)
Common Maintenance Needs:
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Hydraulic cylinder seal kits: Needed for both lift and tilt cylinders – Shop Bobcat 641 Hydraulic Kits
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VH4D engine service parts: Carburetor rebuild kits, spark plugs, coils – Find VH4D Parts
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Steering linkage components: Wear over time and require lubrication or replacement
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Chain drive inspection: Chains and sprockets must be checked for stretch or wear
Common Issues & Quick Fixes:
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Engine misfires or won’t start: Rebuild the carburetor and check ignition coil
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Hydraulic system leaks: Replace seals in tilt or lift cylinders
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Clunky chain drive: Indicates chain slack or worn sprockets
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Overheating engine: Clean cooling fins and confirm fan belt tension
Pro Tips:
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Always inspect chain case oil every 50 hours for contaminants
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Use SAE 30 non-detergent oil for engine life and performance
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Apply grease to all zerk fittings after every 10 hours of operation
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Store indoors or under cover to prevent deterioration of hydraulic lines
Serial Number Location:
The serial number plate on the Bobcat 641 is typically mounted on the loader frame beneath the seat or near the engine compartment.
