14.
Troubleshooting
Caution
Contact your Maruyama dealer for overhaul.
If you are experiencing a problem that is not listed in this chart or you are still experiencing the
problem although you have checked all the possible cause listed, contact your Maruyama dealer.
Engine does not start
Problem
No fuel.
Fuel valve is closed.
Fuel does not reach
the carburetor.
Fuel strainer is clogged.
Fuel pipe is bent or clogged.
Stop switch is in the "Stop" position.
Fuel is supplied and
Fuel is suctioned excessively.
the ignition plug does
Spark plug gap failure.
not ignite.
Spark plug insulation failure.
Stale fuel.
Engine is cold, but the choke lever is open.
Fuel is supplied and
the ignition plug
Engine is warm, but the choke lever is closed.
ignites.
Dirty air filter.
Oil level falls below the safety limit.
Pump problems
Condition
Water tap is not opened.
Water other than clean water (drinking water) is
used.
Air is not bled.
Water suction hose is bent or crushed.
Water is not
Water suction hose is damaged.
suctioned.
Water suction hose is not tightened properly.
Faulty or detached gasket of water suction hose.
No water in the water feed container.
Water suction strainer is not submerged in water.
Suction head is too high to suction water.
Not enough water from water tap.
Low supply capacity of water tap.
Incorrect nozzle.
Low operation
Worn nozzle.
pressure.
Water suction strainer is clogged.
Faulty unloader.
Low-pressure mode of nozzle.
Cause
Cause
-25-EN
Solution
Fill fuel tank.
Open.
Inspect/clean.
Inspect/clean, replace.
Switch to "Run."
Dry.
Adjust, replace.
Inspect/clean, replace.
Change.
Close.
Open.
Inspect/clean.
Fill the crankcase with oil.
Countermeasure
Open the water tap.
Use clean water (drinking water).
Bleed air.
Remove bends and crushes.
Inspect/replace.
Tighten.
Replace.
Add water.
Submerge in water.
Keep 0.2 m or less.
Fully open the water tap.
Switch to self-priming.
Replace with a proper nozzle.
Inspect/replace.
Inspect/clean.
Replace.
Switch to the high-pressure
mode.