Troubleshooting - Cub Cadet RZT50 Operator's Manual

Troubleshooting
8
Problem
Engine fails to start
Engine runs erratic
Engine overheats
Engine hesitates at high
RPM
Engine Idles rough
Excessive vibration
Uneven cut
Mower will not mulch grass
(If Equipped w/Mulching
Kit)
Cause
1. PTO/Blade Engage knob engaged.
2. Parking brake not engaged.
3. Drive control levers not fully outward in
neutral position.
4. Spark plug wire(s) disconnected.
5. Throttle control lever not in correct starting
position.
6. Choke not activated
7. Fuel tank empty, or stale fuel.
8. Blocked fuel line.
9. Faulty spark plug(s).
lO.Engine flooded.
1. Unit running with CHOKE activated.
2. Spark plug wire(s) loose.
3. Blocked fuel line or stale fuel.
4. Ventin gas cap plugged.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug(s) gap too close.
1. Spark plug(s) fouled, faulty or gap too wide.
2. Dirty air cleaner.
1. Cutting blade loose or unbalanced.
2. Damaged or bent cutting blade.
1. Deck not leveled properly.
2. Dull blade.
3. Uneven tire pressure.
1. Engine speed too low.
2. Wet grass.
3. Excessively high grass.
4. Dull blade.
Remedy
1. Place knob in disengaged (OFF) position.
2. Engage parking brake.
3. Move drive control levers fully outward in
neutral position.
4. Connectwire(s) to spark plug(s).
5. Place throttle lever to FAST position.
6. Pull the CHOKE control outward.
7. Fill tankwith clean, fresh (less than 30 days
old) gas.
8. Clean fuel line and replace fuel filter.
9. Clean, adjust gap or replace plug(s).
10.Crank engine with throttle in FAST position.
I. Push CHOKE control in.
2. Connect spark plug wire(s).
3. Clean fuel line; fill tank with clean, fresh
gasoline and replace fuel filter.
4. Clearvent or replace cap if damaged.
5. Drain fuel tank. Refill with clean, fresh
gasoline.
6. Replace air cleaner paper element or clean
foam precleaner.
I. Fill crankcase with properamountand
weight of oil.
2. Clean grass clippings and debris from around
the engine's cooling fins and blower housing.
I. Remove spark plug(s) and resetthe gap.
1. Replace spark plug(s). Set plug gap.
2. Replace air cleaner element and/or clean
pre-cleaner.
1. Tighten blade and spindle.
2. Replace blade.
1. Perform side-to-side deckadjustment.
2. Sharpen or replace blade.
3. Check tire pressure in all four tires.
1. Place throttle in FAST (rabbit) position.
2. Do not mulch when grass is wet.
3. Mowonceata high cutting height, then
mow again at desired height or make a
narrower cutting swath.
4. Sharpen or replace blade.
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