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CARBURETOR ADJUSTMENTS
WARNING: When making adjustments to
the carburetor while the engine is run-
ning, disengage the PTO clutch and
engage the brake pedal lock. Keep clear
of all moving parts and be careful of all
hot surfaces.
WARNING: Carbon monoxide fumes can
be fatal! Do not make any adjustments to
the carburetor in a confined area such as
a storage building. Move the tractor out-
side into the open air.
The carburetor is adjusted at the factory and under
normal operating conditions it will not require
readjusting. The high speed and idle fuel mixture
settings are made at the factory and cannot be
adjusted. If the engine does not operate properly and
the problem appears to be fuel system related, check
the following areas before adjusting the carburetor:
Refer to MAINTENANCE section.
• Check for fuel in fuel tank
• Check fuel cap vent for blockage
• Check fuel line for pinched or obstructed areas
• Check for fuel filter blockage
• Check for a clogged air filter
If, however, the engine is hard-starting or runs roughly
or stalls at low idle speed, it may be necessary to
adjust or service the carburetor.
The air filter element and element cover must be
assembled to the carburetor when running the engine.
There are no accessible mixture adjustment screws on
the carburetor. The only setting which can be changed
is the low idle speed.
NOTE: Carburetor adjustments should be made only
after the engine has warmed up.
1. Start the engine and run at half throttle for 5 to 10
minutes to warm up. The engine must be warm
before making the final settings. Check that the
throttle and choke plates can fully open.
2. Idle Speed Setting: Place the throttle control into
the "idle" or "slow" position. Set the low idle speed
to 1200 rpm (± 75 rpm) by turning the low idle
speed adjusting screw in or out. Check the speed
using a tachometer (See Figure 19).
NOTE: AIR CLEANER COVER MUST
BE REMOVED TO ADJUST
CARBURETOR IDLE SPEED
IDLE SPEED
ADJUSTING SCREW
AND SPRING
3. If proper operation is not restored after adjusting the
low idle speed, carburetor servicing by your Cub
Cadet dealer may be required.
24
Figure 19
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Questions and answers
how good is this lawn traqctor
The Cub Cadet GT2542 is considered a good lawn tractor, especially for its price. It is part of the 2500 series, which is generally regarded as a great value. The 42-inch twin-blade deck may not cut as efficiently as larger three-blade decks, but it is suitable for smaller lots, such as one acre. Users appreciate its solid build quality, reliable frame, and drive system. The model is also backed by a three-year warranty, which is honored well. Some users prefer it over other brands like John Deere, citing better construction and longer-lasting parts availability.
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