Yard-Man 21A-392B401 Operator's Manual download pdf (Page 10)

SECTION 5: MAKING ADJUSTMENTS

WARNING: Disconnect the spark plug wire

and ground it against the engine before

performing any adjustments.

Engine Adjustment

Refer to the separate engine manual for engine

adjustment instructions.

Wheel Adjustment

To adjust the wheel yoke and wheel position, refer to

the Operating Section.

Depth Stake Adjustment

To adjust the depth stake to a desired position, refer to

the Operating Section.

Clutch Control Adjustment

Periodic adjustment of the belt tension may be required

due to normal stretch and wear on the belt. To adjust

the clutch control lever, refer to the Assembly Section.

Tine Width Adjustment

The tilling width of the unit is 22 inches. Tilling width can

be increased to 24 inches by removing the clevis pins

and hairpin clips, sliding the outer tine out one inch, and

securing in this position with the clevis pins and hairpin

clips. For cultivation, reduce the tine width to 13 inches

by removing the outer tines completely. See Figure 12.

Figure 12

SECTION 6: MAINTAINING YOUR TILLER

WARNING: Disconnect the spark plug wire

and ground it against the engine before

performing any repairs or maintenance.

Engine

Refer to the separate engine manual for engine

maintenance instructions.

Maintain engine oil as instructed in the separate

engine manual packed with your unit. Read and follow

instructions carefully.

Service air cleaner every ten hours under normal

conditions. Clean every hour under extremely dusty

conditions. Poor engine performance and flooding

usually indicates that the air cleaner should be

serviced. To service the air cleaner, refer to the

separate engine manual packed with your unit.

IMPORTANT:

Never run your engine without air cleaner

completely assembled.

The spark plug should be cleaned and the gap reset

every 25 hours of engine operation. Spark plug

replacement is recommended at the start of each tiller

season; check engine manual for correct plug type and

gap specification.

Clean the engine regularly with a cloth or brush. Keep

the cooling system (blower housing area) clean to

permit proper air circulation which is essential to engine

performance and life. Be certain to remove all dirt and

combustible debris from muffler area.

Lubrication

Transmission

The transmission is pre-lubricated and sealed at the

factory. It requires no checking unless the transmission

is disassembled. See an authorized service dealer if

the transmission is disassembled.

Tine Engagement Handle/Lever

Lubricate the pivot points on the tine handle/lever and

the cable at least once a season with light oil. The

controls must operate freely in both directions.

22”

24”

13”

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

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Yard-Man 21A-392B401 Operator's Manual Page 10

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