SERVICE ADJUSTMENTS

FRONT-TO-BACK ADJUSTMENT (See Figs. 20 and 21) -

IMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE IF THE FOLLOWING FRONT-TO-BACK ADJUSTMENT IS

NECESSARY, BE SURE TO ADJUST BOTH FRONT LINKS EQUALLY SO MOWER WILL STAY LEVEL SIDE-TO-SIDE

To obtain the best cutting results, the mower housing should be adjusted so the front is approximately 1/8" to 1/2" lower than the rear when the mower is in its highest position.

Check adjustment on right side of tractor Measure dis- tance "F" directly in front of and behind the mandrel at bottom edge of mower housing as shown

Before making any necessary adjustments, check that both front links are equal in length

oIf links are not equal in length, adjust one link to same length as other link.

To lower front of mower housing, loosen nut"G" on both front links an equal number of turns

When distance "F" is 1/8" to 1/2" lower at front than rear, tighten nut"H" against trunnion on both front links. To raise front of mower housing, loosen nut "H" from trunnion on both front links. Tighten nut "G" on both front links an equal number of turns

When distance "F" is 1/8" to 1/2" lower at front than

rear, tighten nut "H" against trunnion on both front links.

NOTE: Each full turn of nut "G" will change dim. "F" by

approximately 3/8"

Recheck side-to-side adjustment

,:. ,,

, /

MANDREL

FIG. 20

BOTH FRONT LINKS SHOULD BE EQUAL IN LENGTH

NUT "H'

FRONT LINKS

FIG. 21

TO REPLACE MOWER DRIVE BELT MOWER DRIVE BELT REMOVAL (See Fig 22) -

oPark tractor on a level surface. Engage parking brake.

•Remove four screws from L H mandrel cover and remove cover.

"Roll belt over the top of LH mandrel pulley. o Remove belt from electric clutch pulley.

• Remove belt from idler pulleys

°Remove any dirt or grass clippings which may have

accumulated around mandrels and entire upper deck surface

°Check primary idler arm and two idlers to see that they rotate ffeely_

Be sure spring is securely hooked to primary idler arm and bolt in mower housing

MOWER DRIVE BELT INSTALLATION (See Fig 22) -

°Install belt in both idlers Make sure belt is in both belt keepers at the idler'sas shown.

°Install new belt onto electric clutch pulley

Roll belt into upper groove of LH. mandrel pulley

°Carefully check belt routing making sure belt is in the grooves correctly and inside belt keepers

°Reassemble LH mandrel cover.

L.H,

 

SPRING

MANDREL

 

ELECTRIC

COVER

SCREWS

CLUTCH

 

IDLER

PULLEY

 

PULLEYS

 

PRIMARY

IDLER ARM

!L

BOLT IN

MOWER

HOUSING

MANDREL

MOWER

DRIVE BELT

BELT KEEPERS

FIG. 22

2O

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Sears 917.250551 manual Service Adjustments
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917.250551 specifications

The Sears 917.250551 is a versatile and robust lawn mower that has garnered attention for its reliability and performance in maintaining residential lawns. With a blend of modern technology and user-friendly features, this mower is suitable for homeowners looking to keep their yards in pristine condition.

One of the notable attributes of the Sears 917.250551 is its powerful engine. Equipped with a reliable gas-powered engine, this mower delivers consistent performance, ensuring that even dense grass can be tackled effectively. The engine provides ample torque, which is especially beneficial for cutting through thick patches of grass without bogging down.

The mower features a self-propelling system that makes it easier for users to maneuver across various terrains. This technology allows the mower to adjust its speed based on the user's walking pace, providing a comfortable mowing experience while reducing fatigue. The adjustable speed settings cater to different user preferences and grass conditions, making it a flexible choice for diverse lawn care needs.

Another key feature of the Sears 917.250551 is its cutting deck size. The mower typically boasts a generous cutting width, allowing for faster mowing and fewer passes through your lawn. The cutting height is also adjustable, enabling users to customize the grass length according to their liking or seasonal requirements. This flexibility is crucial during different times of the year, as maintaining the optimal grass height can contribute to a healthier lawn.

In terms of build quality, the Sears 917.250551 is designed to withstand the rigors of outdoor use. Constructed with durable materials, it can handle various weather conditions and rough terrains. Maintenance is made straightforward with accessible parts, ensuring that users can perform routine checks and repairs with minimal hassle.

Furthermore, the mower is designed with safety features in mind. The blade brake system halts the blades' rotation immediately when the user releases the handle, minimizing the risk of accidents. Additionally, the ergonomic handles make it comfortable to operate, and they can often be adjusted for height to accommodate users of different statures.

Overall, the Sears 917.250551 stands out for its combination of power, ease of use, and user-friendly features. Whether you have a small yard or a more significant area to maintain, this mower is designed to deliver efficient and effective results, making it a dependable choice for lawn care enthusiasts.
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