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This documentation 

is for informational 

purposes only and 

subjected to change. 

Always check YDS for 

the latest version.

YT3 SERIES Maintenance | YT347, YT359

YT347/YT359 Spare  
parts catalogue download

YT347/YT359 Maintenance 
Kits download

YT347/YT359 Service  
manual download

1. 

Maintenance  

Check list

2. 

Diesel Fuel 

Specifications

3. 

Lubricants/ coolants

4. 

Replacement Parts

1. Maintenance Check list | Maintenance

Topic

Interval

: By user    

: By autorized YANMAR dealer or distributor

Service Intervals

Daily

If nece

ssary

FIRS

T 50 hours

Every 50 hours

Every 250 hours

Every 500 hours

Every 1000 hours

Every 1500 hours

Every 2000 hours

Every 3000 hours

Every 6000 hours

Every 9000 hours

Every 1 year

Every 2 years

Engine Oil Level

Check

Daily

Transmission Hydraulic Oil Level

Check

Daily

Tire Air Pressure

Check

Daily

Grille

Check

Daily

Fuel Tank

Check/Refill

Daily

Rubber Dust Unloading Valve

Check

Daily

Radiator Hose and Clamp

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Radiator Cooling Screen

Check

Daily

Oil Cooler Screen

Check

Daily

Safety Systems

Check

Daily

Radiator Cooling Fins

Clean

Every 50 hr

● ▼

Cooling System

Check

Daily

Coolant

Flush/Change Every 2000hr or 2 years 

*1

Fuel Line

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Power Steering Line

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Retractable seatbelt

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Roll-Over Protective Structure 

(ROPS)

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Headlights, Hazard Lights, and all 

other lights (lights and/or bulbs).

Check

Daily | Every 500hr or 2 years 

*1

Replace

If nece

ssary

Fan and Alternator Belt

Inspect

Every 50 hr

● ▼

Adjust

50/250 hr and every 250hr after 

or every year 

*1

Replace

If nece

ssary

Air Cleaner Element

Check/Clean

Every 250 hr and 

If nece

ssary 

*3

Replace

Every 500 hr or every year

*1

Fuses

Replace

If nece

ssary

Battery Condition

Check

Every 50hr

● ▼

Fuel Filter

Replace

Every 500 hr or every 2 years 

*1

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