Northern Lights OL1276 Operator's Manual - page 13
OL1276 03/10
13
SP6. VALVE CLEARANCES & ELECTRONIC
UNIT INJECTOR PRELOAD
1. Have your deaer adjust intake and exhaust valve
clearance and electronic unit injector (EUI) preload.
This one-time adjustment for all new and overhauled
engines is required after the fi rst 2500 hours of
operation.
FUELS - GENERAL
1. Use only clean, high quality fuels of the following
specifi cations, as defi ned by ASTM designation
D975 for diesel fuels:
a. Use grade no. 2 diesel at ambient temperatures
above freezing 30°F (0°C).
b. Use grade No.1 at ambient temperatures below
freezing and for all temperatures at an altitude of
above 5,500 ft. (1500 meters).
2. Sulphur content should not exceed 0.5% (preferably
less than 0.5%).
3. The cetane number should be a minimum of 45.
4. DO NOT use these unsuitable grades of fuel:
a. Domestic heating oils, all types.
b. Class B engine.
c. Class D domestic fuels.
d. Class E, F, G or H industrial or marine fuels.
e. ASTM-D975-60T No. 4-D and higher number
fuels.
f. JP4
5. Storing
fuel:
a. Keep dirt, scale, water and other foreign matter
out of fuel.
b. Avoid storing fuel for long periods of time.
c. Fill the fuel tank at the end of each day's
operation. This will reduce condensation.
Servicing
SP23. CHECK CRANKSHAFT DAMPER
1. Remove belt.
2. Carefully inspect the vibration damper for torn or split
rubber protruding from the front or back of assembly.
3. Grasp vibration damper with both hands and attempt
to turn it in both directions. If rotation can be felt, the
damper is defective and should be replaced.
Note: The vibration damper assembly is not repairable
and should be replaced every 4500 hours or 60
months, whichever occurs fi rst.
Always replace the vibration damper when
ever the crankshaft is replaced or a major engine
overhaul takes place.