== 유영기계주식회사 ==

1. Plow Mounting

①	Drive a tractor backward to the front of plow and then brake it. Push adjust lever of horizontal axis to connect it with the body of sub-link, and then insert a pin. At this time, three points connection part of tractor should be put down entirely and sub-link of tractor should be fit exactly to the connection part of plow.
②	Adjust the handle of right leveling box of the tractor to the right sub-link to fit the sub-link in it and then insert a pin.
③	Lastly, insert and attach the upper link into the main sideboard. At this time, you can adjust the length of the upper link to attach it freely. And check the location for the pin of three points connection part not to make the ring of pin would not fall downward.
④	Run the hydraulic lever of the tractor slowly and carefully so that any damage occurs on the plow blade. Adjust the tractor check lane so as to it has some room at the time of plow work while supported without any shake at the time of being raised.

2. Adjustment and Maintenance of Metacenter

	The metacenter is adjusted by a screw and automatically maintained by a draw load adjusting apparatus after tractor hydraulic lever is adjusted.
	If the plow continues to dig deeply, it is required to put up the hydraulic lever up to the upper part and then put down again.
	Adjust the upper link so as to the left, right, front and the rear of the plow becomes level.
	Adjust the leveling box handle to maintain level plow of uniform metacenter. The upper link is used to adjust the whole depth of the plow and the adjusting changes the level of the right and left, so you should always adjust the leveling handle.
	When the length of upper link is shortened, the leveling rod should be also shortened, while the link is lengthened, the rod should be also lengthened, so always careful adjusting is required.

3. Adjusting of the Width

	The width of the plow should be adjusted according to hydraulic cylinder. It can be used when the plow leans to one side or when starting or finishing the work. The uniform width can be maintained because it is worked in accordance with the soil condition, or the direction of the slope.
	The width of the plow for single/both side use should be adjusted with width adjusting bolt or nut.

4. Operation and Safety

①	For the stop condition, the tractor should be perfectly stopped to which prop is used and the plow must not be raised.
②	Before running the plow, you must confirm that there is no person around. You should care about the rapid speed of the plow end when it is operated and you should be careful for it.
③	When drive it on a road, connect the pedals of right and left brakes and fix the hydraulic lever as described on the directions for use not to make any accident occur while driving it.
④	When the work is finished, it is better to keep the plow separately from the tractor and put it on a prop so as to gets it off from the ground.
⑤	When starting it after having attached the plow, abrupt speeding can make the front part of the tractor lifted.
⑥	If the upper link is too long, the plow could not be penetrated well into the soil, causing lots of loss of traction, while if it is too short, plowing work becomes not uniform, causing lots of abrasion of the plowshare and it becomes difficult to adjust lower traction, and the first row is set up sideward due to its too deep depth and the turning over becomes impossible.
⑦	If the plow and the tractor are not in the level condition and the abrasion of plowshare is not uniform, it means that the furrow is not even.
⑧	If exact metacenter is not maintained, check if the report rod of the tractor fully comes down.
⑨	The safety pin (part no. 237-1-022 and 237-3-032) could be cut off during the operation due to a shock by a rock. In case of this, the pin should be replaced with new one.

5. Plow Separation and Maintenance

①	When the working is finished, turn off the engine and brake to separate the plow as follows
②	Put down the plow on a level and hard ground. At this time, use a supporter for the working.
③	Remove the upper link.
④	Adjust the leveling box to stand the plow up and then remove the sub-rink at right side.
⑤	When removing the plow, there must not be any person between the plow and the tractor.
⑥	Keep the plow in a good condition through periodic inspection and screwing its bolts or nuts.
⑦	After washing and drying the mould board, lubricate it with engine or mission oil for rusting prevention.