High Altitude Engine Operation; Troubleshooting - Toro POWERVAC 51984 Operator's Manual

HIGH ALTITUDE ENGINE OPERATION:

Please have an authorized service center adjust this engine if it is to be run above 2000 feet. Failure to do so may
result in poor engine performance and increased emissions. An engine adjusted for high altitudes can not be run at
2000 feet or lower. In doing so, the engine will overheat and cause serious engine damage. Please have an autho-
rized service center restore high altitude modified engines to the original factory specification before operating
below 2000 feet.

TROUBLESHOOTING

IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORIZED SERVICING DEALER.
PROBLEM
Engine fails to start. No fuel in tank.
Spark plug shorted or fouled.
Spark plug is broken (cracked porcelain or
electrodes broken).
Ignition lead wire shorted, broken, or
disconnected from spark plug.
Ignition inoperative.
Engine hard to start. Water in gasoline or stale fuel mixture.
Too much oil in fuel mixture.
Engine is under or over-choked.
Weak spark at spark plug.
Engine lacks power. Air filter clogged.
Spark plug fouled.
Spark arrestor/muffler/exhaust port deposits.
Engine overheats. Insufficient oil in fuel mixture.
Troubleshooting
CAUSE REMEDY
Fill tank with fresh fuel/oil mixture.
Replace spark plug.
Replace spark plug.
Replace lead wire or attach to spark plug.
Contact authorized service center.
Drain entire system and refill with fresh fuel/oil
mixture.
Drain and refill with correct fresh fuel/oil mixture.
Adjust choke as necessary.
Contact authorized service center.
Clean/replace the air filter.
Replace the spark plug.
Clean/replace spark arrestor /muffler parts as
required.
Mix fuel and oil as described in starting
instructions.
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