Bolens 979 Cutting Height Adjustment, Handle Height Adjustment, Drive Clutch Control Adjustment

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SECTION 6: MAKING ADJUSTMENTS

WARNING: Do not at any time make any adjustments without first stopping engine and disconnecting spark plug wire.

Cutting Height Adjustment

Your mower is shipped with the cutting height in the lowest position. The cutting height adjustment lever is located above the left rear wheel. To adjust the cutting height, pull the lever out and away from the mower and then move it forward or backward to select a new cutting height. See Figure 10.

NOTE: For rough or uneven lawns, move the height adjustment lever to a higher position. This will help stop scalping.

Cutting Height

Adjustment Lever

Lower

Higher

Figure 10

Handle Height Adjustment

Your mower is shipped with the handle in the higher height position. To lower the height proceed as follows:

Remove the starter rope from the rope guide.

Remove the upper handle by removing the hand knobs and carriage bolts. Lay the upper handle out of the way, being careful not to bend or kink the cables.

Remove the hairpin clips from the weld pins on the handle brackets and remove the wing nuts and carriage bolts from the upper hole on the handle mounting bracket. Press out on the legs of the lower handle and remove lower handle from the mower.

Turn lower handle around so the notch on the bottom of the lower handle is facing forward. See Figure 11.

Reassemble, placing the bottom holes in the handle over the weld pins in the handle mounting bracket.

Place the hairpin clips in the inner holes in the weld pins and insert the carriage bolts the upper hole on the handle mounting bracket and secure with plastic wing nuts.

Reassemble the upper handle to the lower handle.

Attach the starter rope as instructed in the Assembly Section.

Notch

Lower Handle

Figure 11

Drive Clutch Control Adjustment

The adjustment wheel is located in the drive clutch control handle housing and is used to tighten or loosen the drive belt. You will have to adjust the drive clutch control if any of the following happens:

The mower does not propel itself with the drive clutch engaged.

The mower’s drive wheels hesitate with the drive clutch engaged.

To resolve the above problems, rotate the adjustment wheel with your fingers. Clockwise to tighten the cable and counter-clockwise to loosen the cable.

See Figure 12.

 

 

 

 

Bottom View

 

 

 

 

 

 

 

 

 

Adjustment

 

 

 

Upper

 

 

 

Handle

Wheel

 

 

 

 

 

 

 

 

Drive Clutch

Control

Figure 12

NOTE: For some people the drive clutch control may not be in a comfortable position. You can adjust the handle out by tightening the adjustment wheel.

Shift Lever Cable Adjustment

Periodic adjustment of the six speed shift cable may be

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Contents OPERATOR’S Manual Table of Contents General Operation Important Safe Operation PracticesChildren ServiceSlope Operation Page Slope Gauge Removing Unit From Carton Disconnecting Spark Plug WireSetting Up Your Lawn Mower Assembling Your Lawn MowerStopping Engine Know Your Lawn MowerOperating Your Lawn Mower Emptying the Grass Bag MulchingAttaching The Grass Bag Attaching Side Discharge ChuteShift Lever Cable Adjustment Cutting Height AdjustmentHandle Height Adjustment Drive Clutch Control AdjustmentGeneral Recommendations Customer Responsibilities Engine AdjustmentsEngine MaintenanceCutting Blade Removal, Replacement, and Sharpening LubricationDrive Belt Removal and Replacement Arm Storing your Lawn MowerControl Problem Cause Remedy TroubleshootingPage Model 747-0824 Control Handle Part DescriptionModel 25 -0807 Spacer .385 ID x .624 OD 782-0568 Page Page MANUFACTURER’S Limited Warranty for