Craftsman 28910 Operation Manual - Page 31
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TROUBLESHOOTING CHART: See appropriate section in manual unless directed to Sears service center PROBLEM Poor cut = uneven cutting Mower blades will not rotate Poor grass discharge Headlight(s) not working (if so equipped) CAUSE CORRECTION 1 Worn, bent or loose blade. 2 Mower deck not level. 1 Replace blade. Tighten blade bolt 2 Level mower deck. 3 Buildup of grass, leaves, and trash under mower. 3 Clean underside of mower housing. 4 Bent blade mandrel. 4 Contact a Sears or other qualified service center. 5 Clogged mower deck vent from build-up of grass, leaves, and trash around mandrels. 5 Clean around mandrels to open vent holes. 1 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 Contact a Sears or other qualified service center. 1 Engine speed too slow. 1 Place throttle control in "FAST" position. 2 Travel speed too fast. 2 Shift to slower speed. 3 Wet grass. 4 Mower deck not level. 3 Allow grass to dry before mowing 4 Level mower deck. 5 Low/uneven tire air pressure. 6 Worn, bent or loose blade. 5 Check tires for proper PSI. 6 Replace/sharpen blade. Tighten blade bolt. 7 Buildup of grass, leaves and trash under mower. 8 Mower drive belt worn. 7 Clean underside of mower housing. 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 this manual. 11 Clogged mower deck vent holes 11 Clean around mandrels to from buildup of grass, leaves, and open vent holes. trash around mandrels. 1 Light switch is "OFF". 1 Turn light 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. 5 Blown fuse. 4 Check wiring and connections. 5 Replace fuse. 31