ENGINE

Maintenance, repair, or replacement of the emission control devices and systems, which are being done at the customers expense, may be performed by any non-road engine repair establishment or individual. Warranty repairs must be performed by an authorized engine manufacturer's service outlet.

TO ADJUST THROTTLE CONTROL CABLE

The throttle control has been preset at the

factory and adjustment should not be nec- essary. Check adjustment as described below before loosening cable. If adjust- ment is necessary, proceed as follows:

1.With engine not running, move throttle control lever from slow to choke posi- tion. Slowly move lever from choke to fast position.

2.Check that holes "A" in governor control lever and hole in governor plate line-up. If holes "A" are not aligned, loosen clamp screw and move throttle cable until holes are aligned. Tighten clamp screw securely.

Governor Control Lever

Governor

 

Plate

Hol

ClampCable

Screw

TO ADJUST CARBURETOR

NOTE: The carburetor on this engine is low emission. It is equipped with an idle fuel adjusting needle with a limiter cap, which allows some adjustment within the

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

adjusting needle.

The carburetor has been preset at the factory and adjustment should not be nec- essary. 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 mix- ture. Turning the idle mixture valve out (counterclockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: Damage to the needle

valve and the seat in carburetor may result if screw is turned in too tight.

PRELIMINARY SETTING -

1.Air cleaner assembly must be assem- bled to the carburetor when making carburetor adjustments.

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

FINAL SETTING -

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

2.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.

3.While still holding throttle lever against

idle speed screw, turn idle mixture valve full travel clockwise then coun-

terclockwise until engine runs rough. Turn valve to a point midway between

those two positions. Release throttle lever.

ACCELERATION TEST -

4. Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idle mixture valve out (coun- terclockwise) 1/8 turn. 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 governor, which is factory set for proper engine speed. Overspeed- ing the engine above the factory high

speed setting can be dangerous. If you think the engine-governed high speed

needs adjusting, contact a Sears or other qualified service center, which has proper equipment and experience to make any necessary adjustments.

Idle Speed _- __

Throttle

Screw_Lever

Idle Mixture Valve j-__"

With Limiter

26

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Craftsman 917.273392 Engine, To Adjust Throttle Control Cable, To Adjust Carburetor, Preliminary Setting, Final Setting
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917.273392 specifications

The Craftsman 917.273392 is a robust and versatile lawn mower designed to meet the needs of homeowners who value efficiency, performance, and convenience. This model combines power and user-friendly features to ensure an optimal mowing experience.

One of the standout features of the Craftsman 917.273392 is its powerful engine. Equipped with a reliable Briggs & Stratton engine, it delivers exceptional cutting performance, making it ideal for various lawn types and sizes. The engine’s overhead valve design enhances fuel efficiency and provides better torque.

The cutting deck is another impressive aspect of this lawn mower. It features a wide 42-inch cutting deck that allows for quicker mowing of large areas. The deck is equipped with a dual-blade system, which guarantees a clean and precise cut. Additionally, the adjustable cutting height gives users the flexibility to choose their preferred grass length, accommodating different lawn care preferences.

In terms of convenience, the Craftsman 917.273392 does not disappoint. The mower includes a hydrostatic transmission, which provides seamless shifting without the need for a clutch. This feature ensures a smooth operation, allowing the user to focus on mowing rather than managing gears. The ergonomic design of the control panel enhances user comfort, with easy-to-reach levers for controlling speed and cutting height.

Safety is also a priority in the Craftsman 917.273392 design. The mower is equipped with a safety switch that automatically shuts off the engine when the operator leaves the seat, preventing accidents and enhancing peace of mind during operation.

Another valuable characteristic of this mower is its mulching capability. The optional mulching kit enables users to finely chop grass clippings, returning nutrients back to the soil, which can improve lawn health over time. The rear bagger option adds further versatility, allowing for efficient collection and disposal of grass clippings.

Maintenance has been made simpler with the inclusion of easy-access features. The mower deck can be easily cleaned without having to reach underneath, and regular maintenance tasks such as oil changes are straightforward.

Overall, the Craftsman 917.273392 combines power, versatility, and user-centric design elements, making it a reliable choice for homeowners looking to maintain a well-manicured lawn with ease.
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