PAGE 76 — MAYCO LS300G CONCRETE PUMP • OPERATION MANUAL — REV. #2 (09/09/19)
TROUBLESHOOTING (ENGINE)
Troubleshooting (Gasoline Engine)
Symptom
Possible Problem
Solution
Engine will not start or start is delayed,
although engine can be turned over.
No Fuel reaching injection pump?
Add fuel. Check entire fuel system.
Defective fuel pump?
Replace fuel pump.
Fuel fi lter clogged?
Replace fuel fi lter and clean tank.
Faulty fuel supply line?
Replace or repair fuel line.
Compression too low?
Check piston, cylinder and valves. Adjust or
repair per engine repair manual.
Fuel pump not working correctly?
Repair or replace fuel pump.
Oil pressure too low?
Check engine oil pressure.
Low starting temperature limit exceeded?
Comply with cold starting instructions and
proper oil viscosity.
Defective battery?
Charge or replace battery.
Air or water mixed in fuel system?
Check carefully for loosened fuel line
coupling, loose cap nut, etc.
At low temperatures engine will not start.
Engine oil too thick?
Refi ll engine crankcase with correct type of
oil for winter environment.
Defective battery?
Replace battery.
Engine fi res but stops soon as starter is
switched off.
Fuel fi lter blocked?
Replace fuel fi lter.
Fuel supply blocked?
Check the entire fuel system.
Defective fuel pump?
Replace fuel pump.
Engine stops by itself during normal
operation.
Fuel tank empty?
Add fuel.
Fuel fi lter blocked?
Replace fuel fi lter.
Defective fuel pump?
Replace fuel pump.
Low engine power, output and speed.
Fuel tank empty?
Replace fuel fi lter.
Fuel fi lter clogged?
Replace fuel fi lter.
Leaks at pipe unions?
Check threaded pipe unions tape and tighten
unions a required.
Speed control switch does not remain in
selected position?
See engine manual for corrective action.
Engine oil level too full?
Correct engine oil level.
Summary of Contents for MAYCO LS300G
Page 2: ...PAGE 2 MAYCO LS300G CONCRETE PUMP OPERATION MANUAL REV 2 09 09 19 PROPOSITION 65 WARNING...
Page 5: ...MAYCO LS300G CONCRETE PUMP OPERATION MANUAL REV 2 09 09 19 PAGE 5 NOTES...
Page 73: ...MAYCO LS300G CONCRETE PUMP OPERATION MANUAL REV 2 09 09 19 PAGE 73 NOTES...
Page 85: ...MAYCO LS300G CONCRETE PUMP OPERATION MANUAL REV 2 09 09 19 PAGE 85 HYDRAULIC SYSTEM DIAGRAM...