User manual MTD MAC 320BV PARTS LIST

[. . . ] Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requires replacement, accessory part #753-04121 Spark Arrestor Screen is available by contacting the service department at 550 N. It will help you assemble, prepare, and maintain the unit for best performance. [. . . ] For best results, tap the Bump Head™ on bare ground or hard soil. If line release is attempted in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter. NOTE: Do not rest the Bump Head™ on the ground while the unit is running . CAUTION: Do not remove or alter the line cutting blade assembly. Excessive line length will make the clutch overheat. This may lead to serious personal injury or damage to the unit. Some line breakage will occur from: • Entanglement with foreign matter • Normal line fatigue • Attempting to cut thick, stalky weeds • Forcing the line into objects such as walls or fence posts TIPS FOR BEST TRIMMING RESULTS • • Fig. 13 • • The unit is at waist level. The cutting attachment is parallel to the ground and easily contacts the vegetation to be cut without the operator having to bend over. MAINTENANCE SCHEDULE These required maintenance procedures should be performed at the frequency stated in the table. They should also be included as part of any seasonal tune-up. WARNING: To prevent serious injury, never do maintenance or repairs with unit running. always do maintenance and repairs on a cool unit. Disconnect spark plug wire to ensure the unit will not start. FREQUENCY Before starting engine MAINTENANCE REQUIRED Fill fuel tank with fresh fuel Check oil Clean and re-oil air filter Change oil Change oil Clean spark arrestor Check rocker arm to valve clearance and adjust as required Check rocker arm to valve clearance and adjust as required Check spark plug condition and gap REFER TO: Page 10-11 Page 19 Page 20-21 Page 19-20 Page 19-20 Page 24 Page 22-23 Page 22-23 Page 24 Every 10 hours 1st Change at 10 hours Every 25 hours there after Every 25 hours 10 hours on new engine Every 25 hours Every 25 hours 15 SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS LINE INSTALLATION FOR THE SPEEDSPOOL® Always use genuine Ryobi 0. Line other than specified may make the engine overheat or fail. Trimming Line Eyelet WARNING: Never use metal-reinforced line, wire, or rope, etc. These can break off and become dangerous projectiles. There are two methods to replace the SpeedSpool® trimming line. € Wind the inner reel with new line • Install a prewound inner reel Winding the Inner Reel With New Line NOTE: It is unnecessary to remove the bump knob to install new trimming line. [. . . ] Any replacement part that is equivalent in performance or durability may be used in non-warranty maintenance or repair and will not reduce the warranty obligations of the manufacturer. € The following components are included in the emission related warranty of the engine, air filter, carburetor, primer, fuel lines, fuel pick up/fuel filter, ignition module, spark plug and muffler. 31 MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD SOUTHWEST INC (“MTD”) with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD warrants this product against defects in material and workmanship for a period of one (1) year commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship. [. . . ]