MTD 21A-450 Series manual Making Adjustments, To Operate The Tiller, Belt Tension Adjustment

Models: 21A-450 Series

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TO OPERATE THE TILLER:

Use This

Position

First Time

Transport

SECTION 6: MAKING ADJUSTMENTSPosition

TO OPERATE THE TILLER:

Select the depth stake setting.

Start engine as instructed on page 9.

Move gear selection handle to one of the forward modes or reverse.

Use the reverse tine drive when tilling virgin ground, sod or hard soil. Use the forward tine

Clevis

Pin

Hairpin

Clip

Figure 8

To transport tiller, lower the depth stake (use top adjustment hole).

To adjust the depth stake, remove the clevis pin and hairpin clip. See Figure 8. Move the depth stake to the desired setting.

To adjust the side shields, remove the front wing nut and loosen the rear wing nut. See Figure 9. Place side shield in position desired. Replace wing nuts and tighten securely.

Use This

Side

Hole for

Shields

Lowest (Shallowest)

 

Position

 

Front

Rear

Wing Nut

Wing Nut

Use This Hole for

Highest (Deepest)

Position

Figure 9

drive when cultivating or tilling soft ground.

IMPORTANT: When using the forward tine drive, lower the depth stake (use a shallower tilling depth) to make certain the tines do not run across the ground.

WARNING: Do not move the gear selection handle with the wheels or tines engaged. Make certain the unit is stopped completely before changing the gear selection.

Squeeze the clutch control bail against the handle to engage the wheels and tines.

NOTE: Make certain the gear selection indicator is correctly positioned before engaging the clutch handle. If it is between gears, the engine will stall.

To transport tiller, do not engage the tines. Select the wheel drive only.

WARNING: Do not push down on the handles so that the wheels are lifted off the ground while using the reverse tine drive, or the tiller could move backward and cause personal injury.

For best results, it is recommended the garden be tilled twice (lengthwise, then widthwise) to pulverize the soil.

SECTION 6: MAKING ADJUSTMENTS

HANDLE ADJUSTMENT

The handle height may be adjusted. Refer to the Know Your Tiller section for details of handle adjustment.

BELT TENSION ADJUSTMENT

Periodic adjustment of the belt tension may be required due to normal stretch and wear on the belt. Adjustment is needed if the tines or wheels seem to hesitate while turning, but the engine maintains the same speed.

To adjust the tension on the belt, refer to clutch adjustment information in “Checking the Clutch Adjustment” section of the Assembly Instructions. After belt tension has been adjusted, if the belt is excessively stretched, you may need to adjust the idler pulley rod. This can easily be checked. With the engine off and the clutch control bail disengaged, shift the gear selection handle to each forward mode. If the indicator bracket touches the idler pulley rod, (with the clutch control bail disengaged), then an adjustment is necessary.

Disconnect and ground out spark plug wire against the engine.

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Image 10
MTD 21A-450 Series manual Making Adjustments, To Operate The Tiller, Belt Tension Adjustment, Handle Adjustment