Northern Lights OL1276, Operator'S Manual

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OL1276 03/10
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If you cannot correct problems with these procedures, see your Lugger or Northern Lights dealer.
valve. See your dealer.
Broken piston spray jet:
• Replace piston spray jet. See your dealer.
Clogged oil pump screen or cracked pick-up tube:
• Remove oil pan and clean screen/ replace
pick-up
tube.
Excessive main or connecting rod bearing clearance:
• Determine bearing clearance. See your dealer.
D
High Oil Pressure
Regulating valve not operating correctly:
• Remove and inspect oil pressure regulating
valve. See your dealer.
Plugged piston spray jet:
• Replace piston spray jet. See your dealer.
Filter bypass valve stuck or damaged:
• Remove and inspect fi lter bypass valve. See
your dealer.
D
High Oil Consumption
Crankcase oil too low viscosity:
• Drain crankcase and re fi ll with correct oil.
Crankcase oil level too high:
• Drain oil until level is correct.
External oil leak:
• Check for leaks in lines around gaskets and
drain
plug.
Oil control rings worn or broken:
• Replace piston rings. See your dealer.
Scored cylinder liners or pistons:
• Remove and inspect cylinders and liners;
replace as required. See your dealer.
Worn valve guides or stems:
• Inspect and measure valve stems and valve
guides; repair as required. See your dealer.
Piston grooves worn:
• Remove and inspect pistons. See your dealer.
Piston rings sticking in ring grooves:
• Remove and inspect pistons. See your dealer.
Insuf fi cient piston ring tension:
• Remove and inspect pistons. See your dealer.
Piston ring gaps not staggered:
• Remove and inspect pistons. See your dealer.
Front and/or rear crankshaft oil seal faulty:
• Replace oil seals. See your dealer.
D
Excessive Fuel Consumption
Intake air restriction:
• Service air cleaner.
Improper type of fuel:
• Consult fuel supplier and use proper type of
fuel for operating conditions.
D
Engine Will Not Crank
Weak battery:
• Replace battery.
Corroded or loose battery connections:
• Clean battery terminals and connections.
Defective main switch or start safety switch:
• Repair switch as required.
Starter/solenoid defective:
• Replace starter or solenoid.
D
Hard to Start or Will Not Start
Poor fuel quality:
• Drain fuel and replace with proper grade fuel.
Slow cranking speed:
• Check for problems in the charging or starting
system.
Electronic Control System Problem:
• See your local dealer.
D
Engine Mis fi ring or Runs Irregularly
Electronic Control System problem or basic engine
problem:
• See your dealer.
D Lack of Engine Power
Poor fuel quality:
• Drain fuel and replace correct grade fuel.
Intake air restriction:
• Service air cleaner.
Clogged primary fuel fi lter:
• Clean or replace fi lter element.
Clogged secondary fuel fi lter element:
• Replace secondary fi lter element.
Crankcase oil too heavy:
• Fill with oil of appropriate viscosity.
Electronic Control System problem or basic engine
problem:
• See your dealer.
D
Low Oil Pressure
Low crankcase oil level:
• Fill crank case to proper level.
Clogged oil cooler or fi lter:
• Remove and inspect oil cooler. See your
dealer.
High oil temperature:
• Remove and inspect oil cooler. See your
dealer.
Defective oil pump:
• Remove and inspect oil pump. See your
dealer.
Oil pressure regulating valve failure:
• Remove and inspect oil pressure regulating
Troubleshooting