Specifications - Gravely 915015 - 1742 ZT, 9150156 - 2048 ZT Owner's/Operator's Manual

PROBLEM CAUSE
Engine
1. Faulty operator-presence safety switch.
continues to
run when
operator
leaves seat
Engine
1. Engine throttle control not set at
"backfires"
when turning
engine "OFF"
Excessive 1. Worn, bent or loose blade(s).
vibration
2. Bent blade mandrel.
3. Loose/damaged parts.
Headlight not 1. Bulb(s) burned out.
working
2. Loose or damaged wiring.
(Optional)
3. Blown fuse.
Battery will 1. Bad battery cell(s).
not charge
2. Poor cable connections.
3. Faulty regulator.
4. Faulty alternator
Mower blades 1. Obstruction in clutch mechanism.
will not rotate
2. Worn/damaged mower drive belt.
3. Frozen idler pulley.
4. Frozen blade mandrel.
Uneven cut or 1. Worn, bent or loose blade(s).
poor grass
2. Mower deck not level.
discharge
3. Buildup of grass, leaves, and trash
4. Bent blade mandrel.
5. Engine speed too slow.
6. Travel speed too fast.
7. Wet grass.
8. Low/uneven tire pressure.
9. Blades improperly installed.
10. Improper blades used.
Unit does not 1. Improper air pressure in tires.
track straight
2. Eccentrics out of alignment.
"SLOW" position for 30 seconds before
stopping engine.
under mower.
CORRECTION
1. Contact your Gravely Dealer.
1. Move throttle control to "SLOW"
position and allow to idle for 30
seconds before stopping engine.
1. Replace blade(s). Tighten blade bolt.
2. Replace blade mandrel.
3. Tighten loose part(s). Replace
damaged parts.
1. Replace bulb(s).
2. Check wiring and connections.
3. Replace fuse.
1. Replace battery.
2. Check/clean all connections.
3. Contact your Gravely Dealer.
4. Contact your Gravely Dealer.
1. Remove obstruction.
2. Replace mower drive belt.
3. Replace idler pulley.
4. Replace blade mandrel.
1. Replace blade(s). Tighten blade bolt.
2. Level mower deck.
3. Clean underside of mower.
4. Replace blade mandrel.
5. Place throttle control in "FAST"
position.
6. Slow down.
7. Allow grass to dry before mowing.
8. Check tires for proper air pressure.
9. Reinstall blades sharp edge down.
10. Replace with correct blades.
1. Check and adjust tire pressure. DO
NOT exceed maximum recommended
tire pressure. (See Specifications.)
2. See "Adjusting the Unit to Track
Straight" in Adjustments Section.
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