simplicity lawn tractors 4040

1972

PowrMax Series

Garden tractor

PowrMax Series

Garden tractor

Onan CCKA

gasoline

2-cylinder

air-cooled horizontal-shaft opposed-twin

Displacement

816 cc 49.8 ci

Bore/Stroke

3.25x3.00 inches 83 x 76 mm

Power (gross)

16.5 hp 12.3 kW

Fuel system

Marvel-Schebler downdraft carburetor

Air cleaner

paper element

Compression

7:1

Rated RPM

3600

Idle RPM

1200-3850

Starter

electric

Starter volts

12

Sparkplug

Champion H-8

Sparkplug gap

0.025 inches 0.635 mm

Point gap

0.020 inches 0.508 mm

Intake valve clearance

0.007 inches 0.178 mm

Exhaust valve clearance

0.016 inches 0.406 mm

Oil capacity

3.5 qts 3.3 L

Oil change

50 h