FNM HPE 300 - User Manual

Questions and Answers

L
Lauren BrownAug 20, 2025
Why does my FNM Engine crank but not start, even with smoke from the exhaust?
- T
  Terrence ThompsonAug 20, 2025
  If your FNM Engine cranks but fails to start despite smoke coming from the exhaust, consider these possibilities: Air may be present in the fuel supply system; check and bleed the air. The intake air filter might be clogged, requiring cleaning or replacement. The fuel quality could be wrong or the fuel could be contaminated; in this case, check the fuel, drain and flush the fuel tank, and replace with new fuel. Faulty glow plugs could also be the cause; check and replace them if needed. Finally, the lube oil SAE class or quality might be incorrect for the ambient temperature; replace it with the correct type.
K
Kevin JordanNov 1, 2025
Why won't the FNM Engine starter crank?
- A
  Amber BryantNov 1, 2025
  The FNM Engine starter might not crank due to several reasons. Ensure the control lever is in neutral. Check that the emergency stop button (ECU Box) is not pushed in; if it is, pull it out. Verify the battery is not faulty or discharged and has sufficient voltage; check/recharge the battery and inspect the engine generator and/or battery charger. Look for blown fuses and replace them if necessary. Clean and tighten any loose or corroded connections in the starting circuit. If a very long intermediate cable is causing low voltage, install an auxiliary starter relay. Inspect the engine electric ground connection. Check or replace a faulty starter-switch or starter-relay. Examine and replace the starter-motor if it's faulty or the pinion doesn't engage. Repair any seized components or addres...
L
Lisa OlsonNov 11, 2025
What to do if FNM Engine cranks but won't start and there's no smoke from the exhaust?
- G
  Gary CollinsNov 11, 2025
  If your FNM Engine cranks but doesn't start and there's no smoke from the exhaust, the following could be the issue: * The fuel supply valve may be closed. Open it. * The fuel tank might be (almost) empty. Fill it. * There might be air in the fuel supply system. Check and bleed it. * The fuel filter could be clogged. Check or replace it. * The fuel pre-filter may be clogged. Clean or replace it. * Fuses could be burnt. Check and replace them. * There might be a leak in the fuel supply or injection line. Check and replace if necessary. * The vent line of the fuel supply tank could be clogged. Check and clean it. * The exhaust could be clogged. Verify it. * The fuel low-pressure electrical pump may not be working. Check the electrical connection, check the pump, and cle...