CUSTOME ESPONSIBILITIES

TRACTOR

Always observe safety rules when performing any mainte- nance.

BRAKE OPERATION

If unit requires more than six (6) feet stopping distance at high speed in highest gear, then brake must be adjusted. (See "TO ADJUST BRAKE" in the Service and Adjust- ments section of this manual).

TIRES

Maintain proper air pressure in all tires (See "PROD- UCT SPECIFICATIONS" on page 3 of this manual).

Keep tires free of gasoline, oil, or insect control chemi- cals which can harm rubber.

Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage.

The blade can be sharpened with a file or on a grinding wheel. Do not attempt to sharpen while on the mower.

To check blade balance, you w I1need a 5/8 drameter

steel bolt, pin, or a cone balancer. (When using a cone balancer, follow the instructions supplied with bal- ancer).

Slide bladeon to an unthreaded portion of the steel bolt or pin and hold the bolt or pin parallel with the ground. tf blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced.

NOTE: Do not use a nail for balancing blade. The lobes of the center hole may appear to be centered, but are not.

CENTER HOLE

J_'

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/

 

/

 

 

/

 

 

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BLADE CARE

For best results mower blades must be kept sharp. Re- place bent or damaged blades.

BLADE REMOVAL (See Fig. 12)

5!8" BOLT

BLADE

*Raise mower to highest position to allow access to blades.

oRemove hex bolt, lock washer and flat washer securing blade.

,Install new or resharpened blade with trailing edge up towards deck as shown.

Reassemble hex bolt, lock washer and flat washer in exact order as shown.

,Tighten bolt securely (30-35 Ft. Lbs. torque).

!MPORTANT: BLADE BOLT 1SGRADE8HEATTREATED.

NOTE: We do not recommend sharpening blade- but if you do, be sure the blade is balanced.

BLADE

TRAILING

EDGE UP

LOCK

WASHER

._.

//

FLAT

WA!

 

HEX BOLT (GRADE 8)*_

*A GRADE 8 HEAT TREATED BOLT CAN BE IDENTIFIED BY SIX LINES ON THE BOLT HEAD,

FiG. 12

FiG. 13

V-BELTS

Check V-belts for deterioration and wear after 100 hours and replace if necessary. The belts are not adjustable. Replace belts if they begin to slip from wear.

TRANSAXLE COOLING

Keep transaxle free from build-up of dirt and chaff which can restrict cooling.

CHECK TRANSAXLE OiL LEVEL (See Fig. 14)

-Block up rear axle securely.

,Remove left rear wheel by removing hub bolts.

,Remove filler plug from transaxle. Oil level must be even with plug threads. If necessary', fill with SAE 30 motor oil, API-SF or SG. Replace filler plug.

Reassemble wheel to hub.

For approximate capacity see "PRODUCT SPECIFI- CATIONS" on page 3 of this manual.

TRANSAXLE

LER PLUG

TO SHARPEN BLADE (See Fig. 13)

Care should be taken

to keep the blade balanced.

An

unbalanced blade win cause excessive vibration and even-

tual damage to mower

and engine.

FIG. 14

17

Page 17
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Sears 917.25051 manual Tractor, Brake Operation, Tires, Blade Care, Transaxle Cooling

917.25051 specifications

The Sears 917.25051 lawn mower is a product that has made its mark in the gardening and landscaping sectors, renowned for its combination of robust features, advanced technologies, and user-friendly design. This model is particularly favored by homeowners who appreciate both efficiency and reliability when maintaining their lawns.

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