Cub Cadet 1420 User Manual

2
Figure 25
1. Idle Fuel Adjustment Screw
2. Idle Speed Adjustment Screw
The carburetor is adjusted at the factory and under
normal operating conditions it will not require read¬
justing. However, if the engine does not operate
properly, what may appear to be a faulty carburetor
adjustment is in many cases a clogged air filter. This
possibility should be ruled out before attempting to
readjust carburetor. Refer to "MAINTENANCE" sec¬
tion in this manual.
To prevent possible damage to the carburetor nee¬
dles, be very careful closing the carburetor needles
before basic adjustments are made. Improper adjust¬
ment of the carburetor may result in engine damage.
IDLE SPEED ADJUSTMENT
Run engine at maximum governed, no load speed for
a minimum of 30 seconds, then allow engine speed to
fall to idle or put throttle into idle position. Set engine
speed to 1800 (+ or - 75 RPM) by turning the idle
speed screw in or out.
IDLE FUEL ADJUSTMENT
Set the idle fuel mixture by turning the idle fuel screw
out, from the closed position, 1-1/4 to 1-3/8 turns.
MAINTENANCE
ENGINE OIL
The engine crankcase is filled with ship-away oil. This
oil may be used for the first 5 hours of engine opera¬
tion at temperatures between 0 degrees F. and 90
degrees F. If temperatures are not within this range,
drain the oil from the oil filter, if installed, and
crankcase and replace with new oil as specified in the
"LUBRICATION TABLE." The engine oil must be
drained and replaced with new oil every 25 hours of
engine operation.
NOTE
With the optional oil filter service kit (KH-52-
702-02, available from your authorized Cub
Cadet Dealer) installed on your tractor, oil
service intervals can be increased to 50
hours between oil and oil filter changes.
To aid starting, the selection of crankcase lubricating
oils should be based on the lowest anticipated tem¬
peratures until the next drain period.
Cub Cadet Low Ash Engine Oil meeting API Service
Classification SF is recommended. For maximum
engine life select API SF oils with lowest levels of
barium, calcium, or magnesium additives and
minimum ash content (approximately 0.5%). Lubri¬
cant suppliers will normally furnish this information on
their engine oils.
Multi-viscosity numbered oils such as SAE 10W-30 or
SAE 10W-40 can be used above 32 degrees
Fahrenheit.
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Cub Cadet 1420 Specifications

General

Brand	Cub Cadet
Model	1420
Category	Lawn Mower
Language	English