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ENGINE PINGS OR KNOCKS
POSSIBLE CAUSE
SOLUTION
Poor quality or low octane fuel
Replace with recommended fuel
Incorrect spark plug gap or
heat range
Set gap to specs or replace plug
ENGINE RUNS IRREGULARLY, STALLS OR
MISFIRES
POSSIBLE CAUSE
SOLUTION
Fouled or defective spark plug
Inspect, clean and/or replace spark plug
Worn or defective spark plug
wires
Your authorized dealer can assist
Incorrect spark plug gap or
heat range
Set gap to specs or replace plug
Loose ignition connections
Check all connections and tighten
Water present in fuel
Replace with new fuel
Low battery voltage
Recharge battery to 12.8 VDC
Incorrect fuel
Replace with recommended fuel
Clogged air filter
Inspect and clean or replace
Clogged intake pre-filter
Inspect and clean (with soapy water) or replace
Other mechanical failure
Your authorized dealer can assist
ENGINE STOPS OR LOSES POWER
POSSIBLE CAUSE
SOLUTION
Out of fuel
Refuel
Kinked or plugged fuel vent
line
Inspect and replace
Water is present in fuel
Replace with new fuel
Fouled or defective spark plug
Inspect, clean and/or replace spark plug
Worn or defective spark plug
wires
Your authorized dealer can assist
Incorrect spark plug gap or
heat range
Set gap to specs or replace plug
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Summary of Contents for Sportsman 850 2021
Page 6: ...4 WELCOME ...
Page 8: ...6 ...
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