Poulan HDR500M User Manual - Page 11

OPERATION TINE SHEAR PINS The tine assemblies on your tiller are secured to the tine shaft with shear pins (See "TINE REPLACEMENT" in the Service and Adjustments section of this manual). If the tiller is unusually overloaded or jammed, the shear pins are designed to break before internal damage occurs to the transmission. • If shear pin(s) break, replace only with those shown in the Repair Parts section of this manual. CULTIVATING Cultivating is destroying the weeds between rows to prevent them from robbing nourishment and moisture from the plants. At the same time, breaking up the upper layer of soil crust will help retain moisture in the soil. Best digging depth is 1" to 3" (2.5-7.5 cm). Lower the outer side shields to protect small plants from being buried. • Cultivate up and down the rows at a speed which will allow tines to uproot weeds and leave the ground in rough condition, promoting no further growth of weeds and grass (See Fig. 15). ADJUST WHEELS FOR CULTIVATING (See Figs. 16 and 17) • Place blocks under right hand side of tiller and remove hairpin clip and clevis pin from right hand wheel. • Move wheel outward approximately 1 inch (2.5 cm) until hole in inner wheel hub lines up with inner hole in axle. • Replace clevis pin and hairpin clip on inside of wheel and remove blocks. • Repeat preceding steps on left hand side. NOTE: In extremely rough conditions and while cultivating, the wheels should be moved outward on the axle for increased stability. OUTER VIEW OF TIRE CLEVIS PIN FIG. 15 tire_1 FIG. 16 HAIRPIN CLIP INNER VIEW OF TIRE CLEVIS PIN HAIRPIN CLIP FIG. 17 tire_2 11