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Coolant 

Check the coolant level of the reservoir 
tank. It should be between the upper and 
lower limits marked on it when the engine 
is warm. If the engine is cold, the coolant 
level must be at the low line on the reserve 
tank. When necessary, add a pre-diluted 
coolant with an antifreeze to water ratio 
that suits the local climate*.

Engine Oil 

1. 

Remove the dipstick and wipe the 
dipstick with a clean rag.

2. 

Insert the dipstick completely and  
remove it to check the oil level.

3. 

Make sure the oil level is within the upper 
and lower limits marked on the dipstick.

Fuel

Dirt and water in the fuel can 
damage the engine. Remove 
dirt and debris from the fuel 
tank. Before filling the fuel tank, 
make sure that the fuel and 
filling equipment is clean and 
free of debris. Avoid using fuel containers 
made of zinc plated steel. A plastic or 
stainless container is recommended.

1. 

Fill the fuel tank with fresh fuel.  
Tank capacity: 7.4 gal (28L).

2. 

If the floating red ring rises from the 
bottom of the water separator, turn the 
fuel shut-off valve to the OFF (closed) 
position, then loosen the drain valve 
and drain until the floating red ring 
returns to the bottom.

Radiator & A/C 

Condenser 

Screens

Rear: Radiator screen
1. 

Open retainers and remove 
the radiator screen to clean with 
compressed air, brush or cloth.

2. 

Using low pressure compressed 
air, remove dirt and debris from the 
radiator cooling fin.

Air Cleaner

It consists of the inner and outer filter. 
Never wash the filter or attempt to clean 
the filter by tapping the filter against 
another object. Apply compressed air 
from inside of the element to blow away 
the dust.

Grease Points

Extremely Wet or Muddy 
Conditions: 

Lubricate the grease fittings once 
every 10 hours or once a day.

All Other Conditions:

 Lubricate the 

grease fittings once every 50 hours.

Right: 

Center pin grease fitting

Left: 

Tie rod grease fitting.

Type of Grease: General all-purpose grease 
NLGI grade No. 2

READ YT235 

OPERATION 

MANUAL

READ YT235 

OPERATION 

MANUAL

READ YT235 

OPERATION 

MANUAL

READ YT235 

OPERATION 

MANUAL

PAGE

14-24

14-25

READ YT235 

OPERATION 

MANUAL

(A)

(a)

(b)

(A)

(B)

*  For details, contact local YANMAR dealer  

for assistance.

FULL

LOW

UPPER LIMIT

LOWER LIMIT
OUT OF LIMIT

Front: Condenser screen (CAB only)
1. 

Clean the condenser screen with 
compressed air, brush or cloth.

2. 

If clogged with dust, remove two screen 
mounting bolts from the left side. Then 
remove the screen to clean the screen.

YANMAR COMPACT UTILITY TRACTOR   |  QUICK MAINTENANCE GUIDE 

DAILY CHECK ITEMS

YT235

PAGE

14-7

14-27

READ YT235 

OPERATION 

MANUAL

PAGE

14-3

PAGE

14-13

14-14

(A) Dipstick
(a) Upper mark
(b) Lower mark

(A) Outer Filter
(B) Compressed Air

PAGE

14-28

14-30

TO

PAGE

14-8

14-10

TO

Element

Red floating ring

at normal position

Water

Drain

Always turn off engine and allow the tractor to cool down completely before accessing the engine, muffler, radiator, or other hot components.

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