Jacobsen SLF 1880, Technical/Repair Manual

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3D-7
SECTION 3D. ENGINE
GENERAL
An engine operator’s manual, prepared by the engine
manufacturer is supplied with the machine. Study the
manual carefully to become familiar with the mainte-
nance, operation, and adjustment of the equipment.
Following the manufacturer’s instructions will assure
maximum service life and operation of the engine.
1. Adjustments and maintenance should always be
performed by a qualified technician. If proper
adjustment cannot be made, contact an autho-
rized Jacobsen dealer.
2. Replace, do not adjust, worn or damaged compo-
nents.
ENGINE BELT
Inspect and adjust the new engine belt after the first 50
hours of operation. Check and adjust annually thereaf-
ter.
1. Adjust the alternator pulleys to 0.25 to 0.31256 in
(6 to 8 mm) with a deflection of 20 lbs. Push at the
midpoint between pulleys (Figure 3D-1). See the
engine manufacturer's manual.
Figure 3D-1. Alternator Mounting
2. Adjust the belt tension by loosening the alternator
mounting bolts and pulling the alternator against
the belt until the proper tension is achieved
(Figure 3D-2).
Figure 3D-2. Engine Drive Belt
WARNING
To prevent serious injury, lower the reels to the
ground, disengage all drives, engage the brake, stop
the engine, and remove the key from the ignition
before making any adjustments or performing main-
tenance.
Ensure the tractor is parked on a solid level surface.
Never work on a tractor that is supported only by a
jack. Always use jack stands.
Use chocks in front of and behind the wheels of the
axle remaining on the ground when lifting only one
axle.
!
Alternator Mounting
Drive Belt Deflection
3D