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Engine: Onan CCKB, 19.5 max bhp @ 3600 rpm. Two cylinders horizontally
opposed, 4 cycle, 31/4 bore, 3 stroke, 49.8 Cu. in. piston displacement,
compression ratio 7.0 to 1. Piston speed 1800 fpm. BMEP 81.3 PSI (Performance
test conducted by manufacturer and corrected in accordance with l.C.E.l. engine
test code). Cooling system pressure air axial-flow blower cooling air volume 830
CFM at 3600 RPM. Combination manifold and muffler exhaust system. Adjustable jet
side draft gasoline carburetor fuel system with diaphragm fuel pump. Fuel lift 4
ft. Manually operated choke. Oil pump system provides full pressure lubrication
to main and connecting rod bearings and governor. Main and rod bearings are
replaceable with precision inserts. Positive rotation exhaust and intake valves
with replaceable exhaust valves seats. Full flow cartridge type oil filter and
replaceable dry type air cleaner element.
Dimensions: (With 29 x 12.0015 rear and 20 x 8.0010 front Turf tires).
Overall length 83
Overall width (max) 56
Overall height to steering wheel 48
Ground clearance, mm. under front axle 15
Turning radius, no brake, feet outside front wheel 8
Turning radius, braking, feet outside front wheel 6
Turning radius, no brake, feet inside rear wheel 3
Turning radius, braking, feet inside rear wheel 1
Drawbar height above ground 13
Liquid Capacities: Fuel tank, 3.8 gals., Transmission, 6.0 qts.
Engine crankcase, 3.5 qts., Axle housings, 0.5 qts. each.
Shipping Weight with AG front & rear tires
Shipping Weight with Turf front & rear tires 1426 lbs.
Shipping Weight with Hi Float rear & Hi Cap. front tires.
Approximate operating weight with operator, full fuel and oil.
Weight on front wheels
Weight on rear wheels
Power Train: Sunstrand in-line hydrostatic variable displacement piston
pump, fixed displacement piston motor drives heavy duty 3-speed range
sliding-gear transaxles. 8 pinion spur gear limited-slip differential integral
to transmission housing. Final drive has individual bull gears driven by pinion
with welded wheel flanges are journaled on tapered roller bearings.
Ground Speeds: mph with 14.8 rolling radius tires and
3600 rpm engine speed with no allowance for slippage.
0 to 4.2
0 to 2.6
Medium 0 to 6.3
0 to 4.0
0 to 6.2
Controls: Right & Left brake pedal. Clutch pedal. Park brake lock. Choke.
Throttle. Front & rear clutch switches. Front & rear hydraulic control levers.
Transmission control lever. Transmission shift lever. Seat adjustment lever.
Ignition switch and key. Steering wheel.
Brakes: Individual disc brakes inboard-mounted on differential input
shafts. One pedal for each brake can be locked together. Parking brake locks
Hydraulic Lift System: Hydraulically powered lift system to raise
mid-mounted or rear implements. Hydraulic kit available for front mounted
implements. Pump rated at 2.5 GPM or 500 PSI. Valve is 2 spool valve for
independent control of front and rear cylinders with quick disconnect adapter
for front only. Cylinder is 2.5 diameter X 4 stroke double acting.
PTO and Clutches: Independent power take-off at rear of tractor
controlled by electric clutch rated at 80 ft. lbs. Front PTO also standard with
electric controlled clutch on engine crankshaft. Rear PTO outputs to 1 involute
spline with 15 internal teeth, rotation speed is 2000 RPM at rated engine speed.
Drawbar and 3-point Hitch: Fixed position removable rear drawbar 13
above ground with hole for 3/4 pin. 3 point hitch mast height is 12 category
"0" and includes arms, sway chains, depth limit chains and dual implement
screw-type tilt adjustment.
Electrical System: Battery is 45 ampere-hour 12 volt
SAE 20 ampere flywheel alternator with silicon diode rectifier, transistorized
temperature compensated voltage regulator. 30 ampere fuse protects alternator,
20 ampere circuit breaker protects auxiliary, twin seal beam floodlights mounted
under fenders are controlled by ignition key and light switch under dash panel.
Rear floodlight is optional. Electric interlocks on clutches and transmission
control lever prevents starting with PTOs energized or with transmission out of
Frame: Heavy gauge formed double channel, full length
of tractor independent of engine.
Front Axle: Formed steel channel and welded. Center pivot journaled on
large bronze bearing. Axle bearing and wishbone widely spaced for stability.
Wheel bearings are tapered rolling contact type, sealed and lubricated. Spindles
are journaled on widely spaced bronze bearings with ball thrust bearings.
Steering: Automotive type recirculating ball screw, finger tip steering
with 14 diameter steering wheel which turns 3.2 revolutions from lock to lock.
Seat and Fenders: Adjustable, padded contour seat is spring mounted on
incline ramp. Rear fenders shield operator from wheels and carry flood-lights.
Because your yard is a lot more than a lawn.
Specifications, descriptions and illustrative material
contained herein are accurate as of the date this publication was approved
for printing We reserve the right to discontinue models or change
specifications or designs at any time without notice or obligation
Father Nature is a Simplicity trademark.
SIMPLICITY MANUFACTURING COMPANY, INC., PORT WASHINGTON, WI 53074 U.S.A.
[Source: Simplicity brochure, The
Simplicity System 9020, Form 41007, courtesy of Paul Kjorlie]