Yanmar diesel tractor EF494T. OPERATOR'S MANUAL - part 1

EF494T OM 

 

TO THE OWNER 

This instruction manual describes how to maintain your tractor in good condition and how to 
operate it safely and correctly. Please read this manual carefully before using the tractor. Keep 
this manual close to your tractor, after you have read through it. If you lose or damage this 
manual, ask your YANMAR dealer for a new manual right away. 
        
IMPROVEMENT 
Sometimes parts are changed to improve or upgrade the features of the tractor, or for other 
reasons. Therefore, the parts shown in this manual may not apply to your tractor. 
 
Note: 

  All data are subject to change without prior warning. Some illustrations and photographs 

may show optional accessories. 

  A Roll-over Protective Structure (ROPS) is optional. 

 

SYMBOLS USED 

 

1. Safety-alert Symbol 

This is the safety-alert symbol.  When you see 
this symbol on your tractor or in this manual, be 
alert to the possibility of personal injury and 
carefully read the messages that follow. 

 

 

2. Signal Words 

The signal words "DANGER" "WARNING" 
"CAUTION" are used with the safety-alert symbol. 

(1) "DANGER" indicates an imminently hazardous 

situation which, if not avoided, will result in death 
or serious injury. 

(2) "WARNING" indicates a potentially hazardous 

situation which, if not avoided, could result in 
death or serious injury. 

(3) "CAUTION" indicates a potentially hazardous 

situation which, if not avoided, could result in 
minor or moderate injury. 

3. Service instructions 

 

(1) This stop symbol indicates important proper 

operation or service messages in this manual.  
When you see this symbol, carefully read the 
messages that follow. 

IMPORTANT

(2) “NOTE” describes precautions to take while 

working. 

 

NOTE 

4. Measurements 

 

 

This tractor is of metric design.  All hardware are 
therefore metric (ISO).  Make sure to use the 
specified metric hardware when service becomes 
necessary.  

 

 

5. Direction 

Right-hand and Left-hand sides of the tractor are 
determined by facing in the direction of the tractor 
forward travel. 

 

 

 

EF494T OM 

1 

 

 

SAFETY INSTRUCTIONS 

 DANGER

 

Read these instructions carefully. 
Important instructions are given for the safe operation 
and servicing of the tractor. 
Failure to follow these instructions is likely to result in an 
accident involving death or serious injury. 

 

 
 

 

STUDY THE TRACTOR AND IMPLEMENTS 

 
Do not permit anyone unfamiliar with the tractor or the 
operations of its implements to use the machine. 
The operator’s manual should be considered a 
permanent part of the tractor and should remain with the 
tractor. 

 

 

 

Know the positions and functions of all controls and the 
meaning of any identification symbols on your controls, 
gauges, and indicators before attempting to operate the 
tractor. 
 
Know how to stop the engine in an emergency. 

 

 

Make sure you understand the capabilities, operating 
characteristics and limitations of the tractor and 
implement, such as maximum ballast weight, hydraulic 
lifting capacity, speed, turning radius, operating 
clearances etc. 
 
Do not add extra ballast weight to compensate for a load 
that is too heavy. 

 

 

 

EF494T OM 

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PROTECT OPERATOR SAFELY 

 
Install an approved Roll-over Protective Structure 
(ROPS) for safe operation. If a tractor rolls over without 
a ROPS, death or serious injury is likely. 
 
Always fasten the seat belt while operating the tractor 
with Roll-over Protective Structure (ROPS) up. 
 
Do not use the seat belt if the foldable Roll-over 
Protective Structure (ROPS) is in the folded position or 
the tractor does not have the Roll-over Protective 
Structure (ROPS). 

 

 

 

 
Extreme caution is required when operating a tractor 
around trees or other overhead obstructions, such as 
guy wires or power lines. Interference between the 
ROPS and these obstructions may cause the tractor to 
tip backwards. 

 

 

Do not modify any structural portions of the ROPS by 
welding, bending, grinding or cutting them. If any 
component of the ROPS is damaged or involved in a 
rollover incident, replace it with a complete new cage. 
Do not attempt to repair the original one. Damaged or 
modified structural parts impair the strength of the 
ROPS and may lead to injury. 

 

 

Avoid loose fitting or baggy clothing, torn clothing, 
bulging pockets, frayed edges or heavy cuffs. Loose 
frayed and bulky clothing can easily become entangled 
in rotating parts. Wear work clothes and work shoes or 
boots. Also you may need a: SAFETY HELMET, 
SAFETY SHOES, EYE PROTECTION, HEAVY DUTY 
GLOVES, HEARING PROTECTION, REFLECTIVE 
CLOTHING, OR A RESPIRATOR/FILTER MASK. 
Wear whatever safety gear and clothing is necessary for 
the job. 

 

 

Prolonged exposure to loud noise can cause impairment 
or permanent loss of hearing. Wear a suitable hearing 
protective device such as ear protectors or earplugs to 
protect against objectionable or uncomfortable noise. 
 

 

 

EF494T OM 

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BEFORE OPERATING 

Do not operate the tractor when tired, sick, sleepy, 
drunk, feeling overworked, taking medicine, pregnant, 
suffering from mental disease or if other improper 
conditions are present. These conditions impair a 
person’s skill and judgment. When you begin feeling 
tired while operating the tractor, take a 10-minute break 
to stretch, walk about, lie down or snack. Do not 
continue if you still feel tired after taking a break. 

 

 

 

Remove oil, grease or mud from the hand rails, steps, 
pedals, controls, and floor to avoid slips or loss of 
control. 
 
In winter, scrape off any ice or snow on the handrails, 
steps, pedals, controls, and floor. 

 

 

To attach or remove an implement, refer to the 
implement and tractor manufacturer’s manuals for the 
proper procedures. 
 
To unhitch an implement, move to a level area, lower the 
implement to the ground and then block the equipment 
in position before unhitching. If an implement has 
wheels, block them to prevent it from rolling. 

 

 

Make sure 

(1) The tractor and implements are in good condition 

and properly adjusted. 

(2) To check for loosened bolts, adequate lubricants, 

damaged or under-inflated tires, safety shields and 
devices, steering and braking linkages, hydraulic 
leaks, etc. Refer to this manual for more detailed 
information. 

(3) That implements are properly attached and hooked 

up. Check that the PTO U-joint yoke and locking 
devices are securely latched on their shafts. 

(4)  

That the tractor’s PTO speed matches the 

implement’s specifications.