Husqvarna YTA18542 Operator's Manual

Also see for LT18542: Owner's manual Owner's manual

27PROBLEM CAUSE CORRECTIONEngine continues torun when operatorleaves seat withattachment clutchengaged1. Faulty operator-safety presence controlsystem.1. Check wiring, switches and connections. If notcorrected, contact an authorized service center/department.CAUTION: DO NOT operate machine untilproblem is corrected.Poor cut - uneven 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade bolt.2. Mower deck not level. 2. Level mower deck.3. Buildup of grass, leaves, trash under mower. 3. Clean underside of mower housing.4. Bent blade mandrel. 4. Replace blade mandrel.5. Clogged mower deck vent holes frombuildup of grass, leaves, and trash aroundmandrels.5. Clean around mandrels to open vent holes.Mower blades willnot rotate1. Obstruction in clutch mechanism. 1. Remove obstruction.2. Worn/damaged mower drive belt. 2. Replace mower drive belt.3. Frozen idler pulley. 3. Replace idler pulley.4. Frozen blade mandrel. 4. Replace blade mandrel.Poor grassdischarge1. Engine speed too slow. 1. Place throttle control in “FAST” position.2. Travel speed too fast. 2. Shift to slower speed.3. Wet grass. 3. Allow grass to dry before mowing.4. Mower deck not level. 4. Level mower deck.5. Low/uneven tire air pressure. 5. Check tires for proper air pressure.6. Worn, bent or loose blade. 6. Replace blade. Tighten blade bolt.7. Buildup of grass, leaves, trash under mower. 7. Clean underside of mower housing.8. Mower drive belt worn. 8. Replace mower drive belt.9. Blades improperly installed. 9. Reinstall blades sharp edge down.10. Improper blades used. 10. Replace with blades listed in parts manual.11. Clogged mower deck vent holes from buildupof grass, leaves, trash around mandrels.11. Clean around mandrels to open vent holes.Headlight(s) notworking(if so equipped)1. Switch is “OFF”. 1. Turn switch “ON”.2. Bulb(s) or lamp(s) burned out. 2. Replace bulb(s) or lamp(s).3. Faulty light switch. 3. Check/replace light switch.4. Loose or damaged wiring. 4. Check wiring and connections.5. Blown fuse. 5. Replace fuse.Battery will notcharge1. Bad battery cell(s). 1. Replace battery.2. Poor cable connections. 2. Check/clean all connections.3. Faulty regulator (if so equipped). 3. Replace regulator.4. Faulty alternator. 4. Replace alternator.Loss of drive 1. Freewheel control in “disengaged” position. 1. Place freewheel control in “engaged” position.2. Debris on steering plate (if equipped). 2. See "CLEANING" in the Maintenance section.3. Motion drive belt worn, damaged, or broken. 3. Replace motion drive belt.4. Axle key missing. 4. Install axle key at rear wheel. See "TO REMOVEWHEEL" in the Service and Adjustments section.Engine "backfires”when turningengine “OFF”1. Engine throttle control not set betweenhalf and full speed (fast) position beforestopping engine.1. Move throttle control between half and full speed(fast) position before stopping engine.Engine dies whentractor is shiftedinto reverse1. Reverse operation system (ROS) is not "ON"while mower or other attachment is engaged.1. Turn ignition key to ROS "ON" position. SeeOperation section.TROUBLESHOOTING