Engine; Engine Oil - Jacobsen R-311T Parts & Maintenance Manual

4 MAINTENANCE
4.4

ENGINE _________________________________________________________________

IMPORTANT: A separate Engine Manual, prepared by the
engine manufacturer, is supplied with this mower. Read
the Engine Manual carefully until you are familiar with
the operation and maintenance of the engine. Proper
attention to the engine manufacturer's directions will
assure maximum service life of the engine. To order
replacement engine manuals contact the engine
manufacturer.
The proper break-in of a new engine can make a
considerable difference to the performance and life of the
engine.
NOTICE
The mower is designed to operate and cut most
efficiently at the preset governor setting. Do not change
the engine governor settings or overspeed the engine.
During the break-in period, Jacobsen recommends the
following:
1. During the first 50 hours of operation, a new engine
should be allowed to reach an operating temperature of
at least 140°F (60°C) prior to operation at full load.
4.5

ENGINE OIL ______________________________________________________________

Check the engine oil at the start of each day before starting
the engine. If the oil level is low, remove oil filler cap, and add
oil as required.
Perform initial oil change after first 25 hours of operation and
every 100 hours thereafter. See Engine Manual.
Use only engine oils with API classification CD/CE.
Above 77°F (25°C) SAE 30W or SAE 10W30/10W40
32 to 77°F (0 to 25°C) SAE 20W or SAE 10W30/10W40
Below 32° (0°C) SAE 10W or SAE 10W30/10W40
See the engine manufacturer's Engine Manual for
detailed service information.
After adding or changing oil, start and run engine at idle with
all drives disengaged for 30 seconds. Shut engine off. Wait
30 seconds and check oil level. Add oil to bring up to FULL
mark on dipstick.
en-20
2. Check the engine oil level twice daily during the first 50
hours of operation. Higher than normal oil consumption
is not uncommon during the initial break-in period.
3. Change engine oil and oil filter element after first 25
hours of operation.
4. Check and adjust fan and alternator belts.
5. Refer to Section 6.3 and Engine Manual for specific
maintenance intervals.
If the injection pump, injectors, or the fuel system require
service, contact an authorized Jacobsen Dealer.
Important: The normal engine operating temperature is
less than 220° F (104° C). If the engine temperature rises
by more than 10° F (6° C) above normal, there is an
indication that the cooling system may not be functioning
properly.
The warning horn will sound when the temperature
reaches 230° F (110° C). To prevent damage to the
engine, never allow the engine to operate above 230° F.
Stop the machine, disengage all drives and operate the
engine at low idle for 5 minutes.