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Allis Chalmers 611 Engine
Engine Model ……………. Briggs and Stratton 251707
Engine Type ……………. 4-Cycle, single cylinder L-head, air-cooled gasoline
Number of Cylinders ……………. 1
Displacement, cu.in (L) ……………. 24.36 (0.399)
Engine Bore, in (mm) ……………. 3.44 (87.0)
Engine Stroke, in (mm) ……………. 2.63 (67.0)
Maximum Horse Power, hp (kW) ……………. 11.0 (8.2)
Rated Engine Speed, rpm ……………. 3600
Idle Engine Speed, rpm ……………. 1750-3400
Maximum Torque, Nm (ft-lbs) ……………. 22.7 (16.8)
Torque Speed, rpm ……………. 2400
Fuel System ……………. Carburetor
Governor ……………. Mechanical (Flyweight)
Air Cleaner ……………. Foam
Ignition System ……………. Battery
Spark Plug Type ……………. Champion CJ-8, Autolite A7N or AC CS-45
Spark Plug Gap, in (mm) ……………. 0.030 (0.76)
Breaker Point Gap, in (mm) ……………. 0.020 (0.50)
Valve Clearance (Intake), in (mm) ……………. 0.005-0.007 (0.13-0.18)
Valve Clearance (Exhaust), in (mm) ……………. 0.009-0.011 (0.23-0.28)
Fuel Tank Capacity, gal (L) ……………. 2.2 (8.3)
Oil Capacity, qt (L) ……………. 1.5 (1.4)
Electrical System
Electrical System Rating, Volts ……………. 12
Electrical Ground ……………. Negative
Starter Type ……………. Electric
Battery Voltage, Volts ……………. 12
AC 611 Power Take-Off
Front PTO Operational Type ……………. Independent
Front PTO Clutch ……………. Mechanical
Front PTO Speed, rpm ……………. 3600
Transmission Configuration
Transmission Model ……………. Peerless
Transmission Type ……………. Belt-driven gear
Gearbox Type ……………. 3F/1R, gear
Number of Forward Gears ……………. 3
Number of Reverse Gears ……………. 1
Oil Capacity, qt (L) ……………. 3.2 (3.0)
Maximum Forward Speed, mph (kph) ……………. 4.5 (7.2)
Maximum Reverse Speed, mph (kph) ……………. 2.1 (3.4)
AC 611 Wheels and Tires
Drive Wheels ……………. 2WD 4×2
Steering Configuration ……………. Front steer
Steering System ……………. Manual
Brakes Type ……………. Disc
Front Tire Size ……………. 13-5.0×6
Rear Tire Size ……………. 18-9.5×8
Dimensions and Weight
Wheelbase, in (mm) ……………. 45.5 (1150)
Length, in (mm) ……………. 62.3 (1590)
Height, in (mm) ……………. 39.3 (990)
Overall Width, in (mm) ……………. 35 (880)
Ground Clearance, in (mm) ……………. 5.5 (130)
Weight, lb (kg) ……………. 460 (210)
Allis Chalmers 611 Attachments
36 inch Mower Deck
Mower Deck Type ……………. Mid-mount, left-discharge
Number of Blades ……………. 3
Cutting Width, in (mm) ……………. 36 (910)
Cutting Height, in (mm) ……………. 1.3-3.2 (30-70)
Overall Width, in (mm) ……………. 46 (1160)
Lift System ……………. Manual
Weight, lb (kg) ……………. 81 (36)
42 inch Mower Deck
Mower Deck Type ……………. Mid-mount, left-discharge
Number of Blades ……………. 3
Cutting Width, in (mm) ……………. 42 (1060)
Cutting Height, in (mm) ……………. 1.3-3.2 (30-70)
Overall Width, in (mm) ……………. 49 (1235)
Lift System ……………. Manual
Weight, lb (kg) ……………. 95 (43)