TROUBLESHOOTING GUIDE
PROBLEM
CAUSE
SOLUTION
No Fuel at Carburetor
Fuel Filter Dirty
Replace
Fuel Line Clogged
Clean
Carburetor
See your MARUYAMA Representative
No Fuel at Cylinder
Carburetor
See your MARUYAMA Representative
Muffler Wet with Fuel
Fuel Mixture is too Rich
Open Choke
Clean/Replace Air Filter
,
Adjust Carburetor
See your MARUYAMA Representative
No Spark at Plug End of Wire
Ignition Switch Off
Turn Switch On
Electrical Problem
See your MARUYAMA Representative
No Spark at Spark Plug
Spark Gap Incorrect
Re-gap 0.22in.(0.55mm)
Covered with Carbon
Clean or Replace
Fouled with Fuel
Clean or Replace
Spark Plug Defective
Replace
Engine Does Not Crank or Turn Over
Internal Engine Problem
See your MARUYAMA Representative
Engine Dies or Accelerates Poorly
Air
Filter Dirty
Clean or Replace
Fuel Filter Dirty
Replace
Fuel Vent Plugged
Clean Fuel Vent
Spark Plug
Clean and Adjust or Replace
Carburetor
Adjust
Cooling System Plugged
Clean
Exhaust Port Fouled
Clean
Spark Arrestor Screen Plugged
Clean
Blower does not work, is weak or
Blower Pipe clogged, loose, or Unclog
uneven
damaged
Tighten
Replace
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