Troubleshooting - Yard Machines 500 Series Operator's Manual

Troubleshooting
Problem
Engine fails to start
Engine running erratically/'
_nconslstent RPM (hunting or
surging)
Engine overheats
Excessive vibration
Loss of power
Umt fails to propel _tself
Unit fails to discharge snow
Cause
1. Choke not in CHOKE position.
2. Spark plug wire disconnected.
3. Fuel tank empty or stale fuel.
4. Engine not primed.
5. Faulty spark plug.
6. Key not in ignition on engine.
1, Eng_nerunmngonCHOKE.
2, Stale fuel,
3, Water or d_rt in fuel system,
4, Carburetor out of adjustment,
5, Engine over-governed
1. Carburetor not adjusted properly.
1, Loose parts or damaged auger,
1. Spark plug wire loose.
2. Gas cap vent hole plugged.
1, Dnve control cable _n need of
adjustment,
2, Dnve belt loose or damaged,
3, Friction wheel worn,
1. Chute assembly clogged.
2. Foreign object lodged in auger,
3. Auger control cable in need of
adjustment.
4. Auger belt loose or damaged.
5. Shear pin(s) sheared.
1, Extension cord not connected (when
using electnc start button, on models so
equlpped)
Remedy
1. Move choke to CHOKE position.
2. Connect wire to spark plug.
3. Fill tankwith clean, fresh gasoline.
4. Pnme engine as instructed in the Operation section.
S. Clean, adjust gap, or replace.
6. Insert key fully into the switch.
1, Move choke lever to RUN posmon,
2, Fdl tank with clean, fresh gasohne,
3, Drain fuel tank, Refill w_th fresh fuel,
4, Contact an authonzed Serwce Center,
S, Contact an authonzed Serwce Center,
1, Contact an authorized Serwce Center.
1, Stop engine immediately and disconnect spark plug wire,
Tighten all bolts and nuts. If wbratlon continues, have umt
serwced by an authonzed Serwce Center,
1. Connect and tighten spark plug wire.
2. Remove ice and snow from gas cap. Be certain vent hole
is clear,
1, Adjust dnve control cable, Refer to Maintenance &
Adjustments section,
2, Replace dnve belt, Refer to Serwce section
3, Replace fnctlon wheel, Refer to Serwce section,
1. Stop engine immedtately and disconnect spark plug wire.
Clean chute assembly and inside of auger housing with
clean-out tool or a stick.
2. Stop engine immediately and disconnect spark plug wire.
Remove object from auger with clean-out tool or a stick.
3. Refer to Auger Control Test.
4. Refer to Maintenance & Adjustments section.
5. Replace with new shear pin(s).
Engine fails to start 1, Connect one end of the extension cord to the electnc
starter outlet and the other end to a three-prong 120-volt,
grounded, AC outlet,
Chute fails to easily rotate 180 1. Chute assembled incorrectly. 1. Unassemble chute control and reassemble as directed in
degrees the Assembly & Set-up section.
Chute does not stay stationary 1, Insufficient tension apphed to chute 2, Refer to the Maintenance & Adjustments section to adjust
while throwing snow using an control, chute preload,
overhead chute control,
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