Troubleshooting Guide - Viper 150CC Manuel De L'utilisateur

TROUBLESHOOTING GUIDE

PROBLEM
Engine will not start
Engine runs rough, floods during
operation
Engine is hard to start
Engine misses or lacks power
Engine runs, then quits
Contact a service provider if above remedies fail.
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POSSIBLE CAUSE
1. Power switch off
2. Spark plug wire disconnected
3. Out of fuel
4. Spark plug wet, faulty or improperly
gapped
5. Stale fuel
1. Dirty air filter
2. Carburetor out of adjustment
1. Stale fuel
2. Spark plug wire loose
3. Dirty carburetor
1. Clogged fuel tank or fuel filter
2. Clogged air filter
3. Improper carburetor adjustment
4. Spark plug dirty, improper gap, or
wrong type
1. Fuel cap not venting
150CC VIPER 4-CYCLE ENGINE
REMEDY/ACTION
1. Flip switch to ON position
2. Connect spark plug wire to spark plug
3. Refuel
4. Clean, replace or gap spark plug
5. Drain old fuel and replace with fresh.
Use fuel stabilizer as a future preventative
measure.
1. Replace air filter
2. Call factory
1. Drain old fuel and replace with fresh. Use
fuel stabilizer as a future preventative
measure.
2. Make sure spark wire is securely attached
to spark plug
3. Clean carburetor, use fuel stabilizer, and
fresh fuel
1. Remove and clean
2. Replace air filter
3. Call factory
4. Replace spark plug and adjust gap to
.030"
1. Replace fuel cap
Owner's Manual