Onan MicroLite 2800 Series User Manual

Section 6. Engine = Primary Systems
INTRODUCTION
The engine primary systems include the following:
The engine primary systems can often be serviced with-
out removing the generator set from the recreational
vehicle and without major disassembly of the set. Use
the following troubleshooting guide
to help locate prob-
lems related
to the engine primary systems. Refer to
Troubleshooting Generator Set Control for problems
related to starting the generator set.
0 Exhaust System
0 Cooling System
Ignition System
0 Crankcase Ventilation System
0 Governor
0 Fuel System
0 Electric Starter
TROUBLESHOOTING ENGINE PRIMARY SYSTEMS
1-1 Many troubleshooting procedures present hazards which can result in severe personal injury or
deafh. Only qualified service personnel with knowledge of fuels, electricity, andmachinery hazards
should perform service procedures. Review safefy precaufions
on inside cover page.
TROUBLE
Engine Misfires
~~ ~
Engine Backfires
POSSIBLE CAUSE
-
1. Faulty ignition due to:
a. worn or fouled spark plug
b. faulty magneto assembly
c. faulty ignition coil
d. faulty plug wire
e. incorrect ignition timing
2. Lean fuel mixture due
to:
a. incorrectly adjusted
fuel mixture screws
*b. incorrect float level
c. dirt in carburetor
d. vacuum leak
3. Contaminated fuel
4.*Carburetor icing
5. Incorrect timing due to:
a. defective magneto
b. incorrect flywheel or
generator mounting
*Gasoline sets only
1. Faulty ignition due
to:
a. incorrect spark plug gap
b. incorrect ignition timing
2. Lean fuel mixture due to:
a. incorrectly adjusted
fuel mixture screws
*b. incorrect float level
c. dirt in carburetor
d. vacuum leak
3. Mechanical damage to engine
*Gasoline sets only
CORRECTIVE ACTION
la. Replace spark plug
1 b. Replace magneto assembly
1 c. Test coil and replace if necessary
1 d. Check spark plug wire and replace
le. Rotor or fan hub improperly installed
coil assembly
if necessary
2a. Adjust carburetor main
and idle adjustment screws
2b. Adjust carburetor float level
2c. Disassemble carburetor and clean
all passages
2d. Locate leak and correct as required
3. Drain fuel tank and refill with
fresh fuel
4. In cold weather, place air preheater
in winter position
5a. Replace magneto assembly
5b. Check for proper installation, see
Generator Service section
1 a. Reset spark plug gap
1 b. Replace magneto assembly
2a. Adjust carburetor main
and idle adjustment screws
2b. Adjust carburetor float level
2c. Disassemble carburetor and clean
all internal passages
2d. Locate leak and correct as required
3. See Engine Block Assembly section
6-1

Onan MicroLite 2800 Series Specifications

General

Brand	Onan
Model	MicroLite 2800 Series
Category	Portable Generator
Language	English