TOADJUST CARBURETOR

NOTE:The carburetoron this engine is low emission. It is equipped with an idle

fuel adjustingneedlewith a limiter cap, which allows some adjustmentwithin the

limits allowed by the cap. Do not attempt to remove the limiter cap. The limiter cap cannot he removed without breaking the adjusting needle.

The carburetor has been preset at the fac- tory and adjustment should not be neces- sary. However, minor adjustment may be required to compensate for differences in fuel, temperature, altitude or load. If the carburetor does need adjustment; proceed as follows:

In general, turning idle mixture valve in (clockwise) decreases the supply of fuel to the engine giving a leaner fuel/air mixture.

Turning the idle mixture valve out (countemlockwise) increases the supply of

fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: Damage to the needle valve and the seat incarburetor may result if screw is tumed in too tight.

PRELIMINARY SETTING -

•Air cleaner assembly must be assem- bled to the carburetor when making car- buretor adjustments.

•Be sure the throttle control cable is adjusted properly (see above).

FINAL SETTING -

•Start engine and allow to warm for five minutes. Make final adjustments with engine running and shift/motion control lever in neutral (N) position.

•Move throttle control lever to slow posi- tion. With finger, rotate and hold throttle lever against idle speed screw. Turn idle speed screw to attain 1750 RPM.

•While still holding throttle lever against idle speed screw, tum idle mixture valve

full travel clockwise then countemlock- wise until engine runs roO_il: T_aive

to a point midway between those two

positions. Release throttle lever.

ACCELERATION TEST -

•Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idle mixture valve out (counter- clockwise) 1/8 tum. Repeat test and continue to adjust, if necessary, until

engine accelerates smoothly.

High speed stop is factory adjusted. Do not adjust--damage may result. IMPORTANT: Never tamper with the engine govemor, which is.factory set _for proper engine speed, overspeeding the engine above the factory high speed set- ting can be dangerous, if you think the engine-governed high speed needs adjusting, contact your nearest authorized service center, which has proper equip ment to make any necessary adjustments.

Idle Speed

Throttle

Screw

Lever

Idle Mixture

Valve With

Limiter

26

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Craftsman 917.270512 owner manual Toadjust Carburetor, Preliminary Setting, Final Setting, Acceleration Test
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917.270512 specifications

The Craftsman 917.270512 is a robust and versatile lawn tractor that combines power, performance, and precision to help homeowners maintain their yards efficiently. This model, part of Craftsman’s renowned line of outdoor power equipment, is designed for a variety of lawn care tasks, from mowing to hauling, making it an ideal choice for those with medium to large lawns.

One of the standout features of the Craftsman 917.270512 is its powerful engine. Equipped with a 22 horsepower Briggs & Stratton engine, this tractor provides reliable performance and ample power to tackle thick grass and uneven terrain. The engine is designed for easy starting and smooth operation, ensuring that users can get to work quickly without the frustration of complicated starting procedures.

The cutting deck on the Craftsman 917.270512 is another key feature. With a 42-inch deck, this lawn tractor offers a wider cutting path, allowing users to cover more ground in less time. The deck is also adjustable, giving the operator the flexibility to customize cutting heights between 1.5 and 4 inches, ensuring an even and well-manicured lawn. Additionally, the deck is designed with a washout port, making it easy to clean and maintain after use.

In terms of technology, the Craftsman 917.270512 incorporates a hydrostatic transmission that provides smoother acceleration and ease of operation. This type of transmission allows the operator to change speeds seamlessly without the need for manual shifting, making it simpler to navigate various terrains effortlessly. This feature is particularly beneficial for maneuvering around obstacles and tight spaces in the yard.

Comfort is a key consideration in the design of the Craftsman 917.270512. It features an ergonomic seat with ample cushioning, ensuring that the operator remains comfortable even during extended mowing sessions. The tractor's compact size also allows for easy navigation in smaller spaces, while the responsive steering enhances maneuverability.

Furthermore, the Craftsman 917.270512 is equipped with a robust set of safety features, including a safety switch that ensures the engine stops when the operator leaves the seat. This feature significantly reduces the risk of accidents, making it a safe choice for users of all ages.

In summary, the Craftsman 917.270512 lawn tractor is a powerful and versatile equipment option for homeowners seeking an efficient lawn care solution. Its reliable engine, adjustable cutting deck, hydrostatic transmission, and user-friendly design make it an excellent investment for maintaining your lawn. With the right combination of performance, comfort, and safety, the Craftsman 917.270512 is sure to be a valuable addition to your outdoor toolkit.
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