Nissan K21 Forklift Engine Guide
The Nissan K21 is a reliable and efficient engine commonly found in Nissan forklifts. This guide provides comprehensive information about the engine's specifications, maintenance requirements, and common issues.
Engine Specifications
- Engine Type: 4-cylinder, water-cooled
- Displacement: 2.1L (2,068 cc)
- Power Output: 45-50 HP
- Fuel Type: LPG/Propane
- Cooling System: Liquid-cooled
- Bore x Stroke: 85mm x 91mm
Common Applications
- Nissan FD30 Forklift
- Nissan FD40 Forklift
- Nissan FD50 Forklift
- Nissan FD60 Forklift
Maintenance Schedule
Daily Checks
- Check engine oil level
- Inspect coolant level
- Check for leaks
- Listen for unusual noises
Every 250 Hours
- Change engine oil and filter
- Check and adjust valve clearance
- Inspect spark plugs
- Check ignition timing
Every 500 Hours
- Replace air filter
- Change fuel filter
- Check and adjust carburetor
- Inspect cooling system
Common Issues and Solutions
Hard Starting
- Check spark plugs and ignition system
- Verify fuel pressure and delivery
- Inspect carburetor for proper adjustment
- Check battery condition and connections
Overheating
- Check coolant level and condition
- Inspect radiator and cooling system
- Verify thermostat operation
- Check water pump function
Loss of Power
- Check air filter condition
- Inspect fuel system components
- Verify valve adjustment
- Check compression levels