Yanmar diesel tractor EF494T. OPERATOR'S MANUAL - part 5

EF494T OM

FUSE BOX

(1) The alternator fuse (60A) and main fuse (60A) are of

slow blow type. When any of these has been blown,
contact your local YANMAR dealer.

(A) Main fuse: 60A
(B) Alternator fuse: 60A

(2) The electrical fuses are in the engine compartment.

Use of fuse other than a correctly rated one way may
cause damage to the electrical system.
Replace the blow fuse with a new fuse of the same
amperage rating.

START : Starter motor

WORK : Working light

TURN : Turn signal light 5A
TAIL

: Tail light

HEAD : Head light

15A

HORN : Horn

FUEL : Fuel pump

ENG : Timer relay

IND

: Indicator light

EF494T OM

WARNING

You must carefully note the length of the bolts when you
install Yanmar recommended implements and
equipment behind the transmission case.

1. First, it is necessary to measure the thickness of the

parts. Then use bolts whose length includes the
extra measured thickness.

2. When the original part is removed and a different

part is installed, it is necessary to measure
difference in thickness of the two parts and change
the length of the bolts appropriately.

If you don’t use appropriate consideration of these
issues, you will damage the transmission case and
create a dangerous situation.

Aluminum cases

Reference

The bolt length “B” in the case must be 2.0 times the
diameter of “A”.

For casting metal cases, rear axles, etc.,
The bolt length “B” in the case must be 1.5 times the
diameter “A”.

D: Transmission case

Cast metal cases

When you install part “a” behind the
transmission case, use bolts whose length
includes measurement “C”.

CAUTION

 Do not try to adjust engine speed adjuster screw (A)

located on engine fuel injection pump. Any accident
or failure resulting from adjusting the screw would
not be covered by Yanmar's guarantee.

 Do not try to unseal and adjust engine fuel injection

pump (B). Any accident or failure resulting from
adjusting the pump would not be covered by
Yanmar's guarantee.

EF494T OM

WARNING

 Do not move the tractor if the wheel mounting bolts

or nuts are loose. If the tractor is driven with loose
nuts or bolts, there is a possibility that an accident
will occur.

 Make daily and periodic wheel inspections to check

for loose nuts and bolts on the wheels. If they are
loose, retighten them to the specified torque.

IMPORTANT

The first 50 hours of handling and maintenance greatly
affect the service life and performance of a new tractor.
In particular, pay special attention to the following points
during this period of time.

(1) Refrain from sudden acceleration and sudden

braking.

(2) Do not increase the speed too much or carry any

more load than is necessary.

(3) Operate the tractor only after the engine has warmed

up sufficiently.

(4) Slow down on a rough road or on a slope.
(5) Check the tightness of the wheel mounting bolts after

the first 10 hours and again after the first 50 hours. If
they are loose, retighten them. (For specific
tightening torques, refer to the table in the instruction
manual.)

IMPORTANT

When the tractor gets stuck in a muddy portion in field,
do not tie a piece of lumber, log or pipe to the front or
rear wheels to drive out of the muddy portion.
It may break transmission and/or rear axle inner parts or
cases.

Put a ladder bridge under the wheels and then drive out.
Or use strong rope or chain to pull it out of the muddy
portion slowly by the other tractor or so.

Note:
These photos show rear tire with cage
wheel.

EF494T OM

PART NAMES

(1) Bonnet

(2) Headlights

(3) Side

lens

(4)

Front axle bracket

(5) Front

wheels

(6) Steering

wheel

(7)

Safety frame (ROPS)

(8) Tail

lamp

(9) Fuel

tank

(10) Rear

wheel

(11) Hydraulic stop-slow return valve
(12) Sub

step

(13) Operator’s

seat

(14) Top

link

(15) Lower

link

(16) PTO shift lever
(17) Flasher lamp (Side marker lamps)
(18) Rear

fender

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