User manual MTD SC621

[. . . ] Operator’s Manual 21-inch, 6-Speed Lawn Mower Model SC 621 IMPORTANT: Read safety rules and instructions carefully before operating equipment. Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, brush-covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P. O. [. . . ] If you answered “yes’ to all three questions, your mower passed the test and you can start your mower. If you answered “no” to any of the three questions, you need to perform the “Drive Clutch Control Adjustment” as instructed on page 13. • Starting Engine WARNING: Be sure no one other than the operator is standing near the lawn mower while starting engine or operating mower. Keep hands, feet, hair and loose clothing away from any moving parts on engine and lawn mower. When starting the unit for the first time, face the mower against a solid object such as a wall, fence, etc. Start the unit and if it shows any signs of motion while the drive clutch control is still disengaged, shut the engine off immediately. • • Make sure that the drive clutch control is adjusted so the drive belt is as loose as possible. Standing behind the mower, depress the blade control handle and hold it against the upper handle. Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle (rope will pull slightly harder at this point). Let the rope • Locking Casters IMPORTANT: If you are cutting grass on a slope, always lock the front wheel casters of your mower for straight ahead operation. Unlocked Position Locked Position Figure 10 • To turn the mower on a slope with casters locked, depress the upper handle and raise the front wheels slightly. To lock caster: Lift and place the lock pin in the larger hole on each caster. See Figure 10. • • • 10 • To unlock caster: Lift and place the lock pin in the smaller hole to allow casters to rotate freely. See Figure 10. Chute Door Lower Handle of Grass Bag Lift bag here WARNING: Do not mow on slopes with casters unlocked since the mower can drift downhill. Bagging Grass Clippings This mower can bag grass clippings. • Remove the three wing nuts holding the mulching baffle or side discharge chute in place. See Figure 11. Wing Nut Figure 13 Emptying Your Grass Bag • Lift grass bag from the bagging adapter using the lower handle of the grass bag. While holding the lower handle, lift up the rear section of the grass bag. Empty the grass bag at a proper disposal site. Remove mulching baffle Side-Discharge Grass Clippings Wing Nut Figure 11 • Replace with bagging adapter. See Figure 12. Bagging Adapter This mower can also side-discharge grass clippings. For that, you will have to install the side-discharge chute on to the unit. Once the side-discharge chute is in place, you can run the mower and the grass clippings will be discharged sideways. Side-Discharge Chute Insert bagging adapter here Figure 14 Figure 12 • Lift chute door and slide bag onto adapter. See Figure 13. Mulching Grass • When the mulching baffle is installed on the unit, the mower is used to mulch grass clippings. If the mulching baffle is not already installed, you will have to remove the grass bag or side-discharge chute as the case may be, and install the mulching baffle for the purpose. [. . . ] Cable 52” Deluxe Control Handle Foam Grip (2 Reqd. ) Upper Handle Lower Handle Grassbag Cover Pivot Rod Cap Nut Frame - Grassbag Rod, Support Grassbag Hex Lock Nut, 1/4-20 Control Box Screw 1/4-20 x 1. 31 Carriage Bolt Wing Nut 20 Multi-Speed Pulley Assembly 15 8 6 1 13 2 9 16 18 14 12 10 4 17 7 5 20 3 19 Ref. 746-0939 656-0613 710-0167 710-0896 711-1114 712-0287 732-0807 736-0270 736-0329 736-0526 738-0924 750-1070 750-1071 756-0625 782-7574A 782-7575A 782-7596 782-7597 712-0138 Description Speed Selector Cable, 53” Multi-Speed Pulley Assembly Carriage Bolt, 1/4-20 x. 5 Self-Tapping Screw, 1/4-20 x . 625 Pivot Shaft Nut, 1/4-20 LH Torsion Spring Bell Washer, . 265 x . 75 x . 062 Lock Washer, 1/4 Wave Washer, 1. 38 x . 88 x . 029 Shoulder Bolt, . 34 x . 35 x 1/4-20 Sleeve Spacer, . 88 ID x 1 OD x . 48 Sleeve Spacer, . 88 ID x 1. 13 OD x . 12 Cable Roller Cable Adjuster Bracket Cable Mounting Bracket Control Arm Pivot Bracket Hex Nut, 1/4-20 NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. [. . . ]