Poulan HDF550 User Manual - Page 14
To Adjust Carburetor
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SERVICE AND ADJUSTMENTS FORWARD MOTION (INSIDE) V-BELT ENGINE PULLEY BELT GUIDE TRANSMISSION PULLEY REVERSE IDLER PULLEY BELT GUIDE FORWARD IDLER PULLEY REVERSE (OUTSIDE) V-BELT REVERSE IDLER PULLEY ENGINE PULLEY belts_10 FORWARD IDLER PULLEY FRONT VIEW REFERENCE REVERSE IDLER PULLEY IDLER ARM PIN ENGINE PULLEY FIG. 21 BELT REMOVAL • Remove reverse idler pulley from idler arm. • Remove reverse (outside) V-belt. • Remove forward (inside)V-belt from transmission pulley first and then from engine pulley. BELT REPLACEMENT • Install new forward (inside) V-belt to engine pulley first then to transmission pulley. Be sure belt is positioned on inside groove of both pulleys, inside all belt guides and rests on idler pulley. • Before installing reverse (outside)V-belt, turn belt"inside out". Twist so wide, flat surface of belt is to inside. • WrapV-belt around reverse idler pulley and reassemble idler to idler arm. Tighten securely. Be sure belt is between reverse idler pulley and idler arm pin. • Install belt to outside groove of transmission pulley. Be sure belt is inside all belt guides and rests on outside groove of engine pulley. CHECK TINE OPERATION • See "TINE OPERATION CHECK" in this section of manual. REPLACE BELT GUARD ENGINE TO ADJUST CARBURETOR The carburetor has been preset at the factory and adjustment should not be necessary. However, engine performance can be affected by differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, contact your nearest authorized service center/department IMPORTANT: NEVERTAMPERWITHTHEENGINEGOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACTYOUR NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS THE PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS. REVERSE IDLER PULLEY IDLER ARM PIN FORWARD MOTION (INSIDE) V-BELT REVERSE IDLER ARM REVERSE (OUTSIDE) V-BELT BELT GUARD BOLT ENGINE PULLEY BELT GUIDE FORWARD IDLER PULLEY FIG. 22 14 TRANSMISSION PULLEY